1997 Research and Publications Report table of contents faculty of Engineering 4

Conference publication, Extract of paper

John S, Coman F, Herszberg I, & Bannister M, 1997, 'Realistic computer graphics, analytical model and macromechanical behaviour of 3D woven composites: a corroborative exposition.', Fourth International Conference on Composites Engineering ICCE/4, vol. 1, Hawaii, pp. 1117-1118

Nicolaidis A, Lee B, & Herszberg I, 1997, 'Fibre damage in the manual production of multi-layer woven performs for advanced composites', Fourth International Conference on Composite Engineering-ICCE/4, vol. 1, Hawaii, pp. 607-608

Peck R, Herszberg I, & John S, 1997, 'The hardware, software and wetware interface for the automated manufacture of composite components.', 4th International Conference on Composites Engineering-ICCE/4, vol. 1, Hawaii, pp. 777-778

Conference publication, Edited volume of conference proceedings

Scott M L, 1997, Extended Abstracts of the Eleventh International Conference on Composite Materials,Gold Coast, Queensland, Australia, 14th - 18th July 1997, Australian Composite Structures Society and Woodhead Publishing Limited, Melbourne

Scott M L, 1997, Proceedings of the Eleventh International Conference on Composite Materials,Gold Coast, Queensland, Australia, 14th - 18th July 1997,Volume VI - Composite Structures, Australian Composite Structures Society and Woodhead Publishing Limited, Melbourne

Scott M L, 1997, Proceedings of the Eleventh International Conference on Composite Materials,Gold Coast, Queensland, Australia, 14th - 18th July 1997,Volume V - Textile Composites and Characterisation, Australian Composite Structures Society and Woodhead Publishing Limited, Melbourne

Scott M L, 1997, Proceedings of the Eleventh International Conference on Composite Materials,Gold Coast, Queensland, Australia, 14th - 18th July 1997,Volume IV - Composites Processing and Microstructure, Australian Composite Structures Society and Woodhead Publishing Limited, Melbourne

Scott M L, 1997, Proceedings of the Eleventh International Conference on Composite Materials,Gold Coast, Queensland, Australia, 14th - 18th July 1997,Volume III - Metal Matrix Composites and Physical Properties, Australian Composite Structures Society and Woodhead Publishing Limited, Melbourne

Scott M L, 1997, Proceedings of the Eleventh International Conference on Composite Materials,Gold Coast, Queensland, Australia, 14th - 18th July 1997,Volume II - Fatigue, Fracture and Ceramic Matrix Composites, Australian Composite Structures Society and Woodhead Publishing Limited, Melbourne

Scott M L, 1997, Proceedings of the Eleventh International Conference on Composite Materials,Gold Coast, Queensland, Australia, 14th - 18th July 1997,Volume I - Composites Applications and Design, Australian Composite Structures Society and Woodhead Publishing Limited, Melbourne

Patent

Thompson L, 1997, Fork/handle bar unit for a bicycle, Integrated forks and handlebars for a racing bicycle. The unit is cantilevered from below the steering tube in the form of aerofoil cross section bars., 29/063343, US, 27/03/1997

Major written or recorded work

Trivailo P M, 1997, Vibrations: Theory and Aerospace Applications. , RMIT Publisher, Melbourne, 2, 1st Edition edn, RMIT, 595 p.

Report

Wong K C, Bil C, Gordon D, & Gibbens P W, 1997, Study of the Unmanned Aerial Vehicle (UAV) Market in Australia, Aerospace Technology Forum

Invited lecture

Trivailo P M, 1997, ' Tethered Satellite System Dynamic Modelling: Deployment/Retrieval, Earth's Magnetic Field Interaction, Tether Severance/Recapture. ', 'Joint meeting of experts of the National Aerospace Laboratory/Japanese National Space Development Agency.', September, National Aerospace Laboratory, Tokyo, Japan

Trivailo P M, 1997, 'Damage and Parameter Identification in Aerospace Structures Using "Twin" Structures Concept.', 'Joint meeting of experts of the National Aerospace Laboratory/Japanese National Space Development Agency.', September, National Aerospace Laboratory, Tokyo, Japan

Seminar

Trivailo P M, 1997, 'Tethered Satellite System Nonlinear Dynamic Modelling: Deployment/Retrieval, Earth's Magnetic Field Interaction, Tether Severance and Recapture. ', 'Aeronautical Engineering Research Seminar.', October, The University of Sydney

Doctorate

Alesi H, 1997, Postbuckling analysis of 3D composite structures, PhD, (Passed), RMIT

Atipan S, 1997, Integration between aTtrailing Vortex and a turbulent Boundary Layer in the Presence of a Periodic Excitation, PhD, (InProgress), RMIT

Bayandor J, 1997, A new zero head hydro-elecrtic power generator for omni-directional flow, doctorate, (InProgress), RMIT

Bourmistrov A V, 1997, Intelligent high level control for autonomous flight vehicles, Doctorate, (InProgress), RMIT

Bourmistrov A S, 1997, Non-linear flight control design of a software - manoeuvrable towed target, Doctorate, (Submitted), RMIT

Cheung A K, 1997, Impact damage of thin-skinned fibre composite structure, Doctorate, (InProgress), RMIT

Creazzo J, 1997, Interaction between a vortex and boundary layers, Doctorate, (InProgress), RMIT

Crothers P J, 1997, The automated manufacture of textile composite structures, Doctorate, (Submitted), RMIT

Danaher R A, 1997, Investigation cyclic free stream frlow turbulence on boundary layers, Doctorate, (InProgress), RMIT

Drack L, 1997, Aircraft noise abatement to meet new noise standards, Doctorate, (InProgress), RMIT

Duarte A, 1997, The manufacture and mechanical properties of composite panels with interleaves, Doctorate, (InProgress), RMIT

Falzon P J, 1997, The mechanical properties of fibre-reinforced composite structures made from braided preforms, doctorate, (Submitted), RMIT

Giess M, 1997, Optimum design of structures built from composite materials, doctorate, (InProgress), RMIT

Herszberg I, 1997, Mechanics of three dimensional reinforced composites, doctorate, (InProgress), RMIT

Khondker O A, 1997, The effect of knit architecture on the mechanical properties of knitted composites, doctorate, (InProgress), RMIT

Koschitzke P, 1997, Aerodynamics of agricultural spraying, doctorate, (InProgress), RMIT

Koschitzke P K, 1997, Aerodynamics of Crop Spraying (Jets in Cross-Flow), PhD, (InProgress), RMIT

Kuan B, 1997, Computer Simulation of Flows in the recirculation zone ofa gas turbine combustor, PhD, (InProgress), RMIT

Maharaj P, 1997, Optimisation of crank shaft design for minimum weight of noise, doctorate, (InProgress), RMIT

Merlo P, 1997, Active control of robot arm using smart structures, doctorate, (InProgress), RMIT

Minh Q, 1997, Forming mechanics of reinforcement fabrics for the manufacture of advancedcomposites, PhD, (InProgress), RMIT

Mitchell L, 1997, Mechanical behaviour of stiffened fibre composite panels made from textile preforms, doctorate, (InProgress), RMIT

Ng C P, 1997, Vortex-boundary layer interactions - a computational approach, doctorate, (InProgress), RMIT

Nguyen M Q, 1997, Forming Mechanics of re-inforcement fabrics for the manufacture of advanced composites, PhD, (InProgress), RMIT

Norwood C, 1997, Vibration techniques for detecting damage in structures, doctorate, (InProgress), RMIT

Peck R, 1997, An integrated approach to the design and automated manufacture of composite components, doctorate, (InProgress), RMIT

Qi B S, 1997, Environmental effects on the mechanical properties of GFRP composites, doctorate, (InProgress), RMIT

Scott C N, 1997, Optimal robust control of uncertain systems with mixed time and frequency domain constraintsSearl A, doctorate, (InProgress), RMIT

Scott M L, 1997, Postbuckling of stiffened fibre composite panels, doctorate, (InProgress), RMIT

Searl A, 1997, Design Optimisation of Stiffened Fibre Composite Aircraft Structures, PhD, (InProgress), RMIT

Seif-Zadeh H, 1997, Active flutter suppression using smart structures, doctorate, (InProgress), RMIT

Sharma S, 1997, Tribological Performance Monitoring of Machines by using a systemsapproach, PhD, (InProgress), RMIT

Sinha A K, 1997, A systems approach to helicopter modifications for multi-mission roles, doctorate, (Passed), RMIT

Srinivasan S, 1997, Critical Defect Failure Criteria in Thick Composite Structures, PhD, (InProgress), RMIT

Thomson R S, 1997, Durability of postbuckling stiffened composite panels, doctorate, (InProgress), RMIT

Valentinis F, 1997, A fault tolerant, adaptive architecture for the intelligent control of autonomous flight vehicles, doctorate, (InProgress), RMIT

Van Kralingen A, 1997, Aeroelastic design criteria for general aviation aircraft, doctorate, (InProgress), RMIT

Vethecan J R, 1997, Control of non-linear structures, doctorate, (InProgress), RMIT

Wang J, 1997, Computer Simulation of Impact Damage of Stiffened Composite panels using Advanced Finite Element Methods, PhD, (InProgress), RMIT

Wharington J, 1997, Autonomous flight vehicle control using neural networks, doctorate, (InProgress), RMIT

Zalizniak V, 1997, Noise rediation from plate-stringer structures, doctorate, (InProgress), RMIT

Zokaei A R, 1997, Influence of active flight control systems on aircraft structural life, doctorate, (InProgress), RMIT

Masters by Research Thesis

Altamore P, 1997, Vehicle side impact modelling techniques, MENG, (InProgress), RMIT

Bardak I, 1997, Reduced order modelling of large order dynamic systems, MENG, (InProgress), RMIT

Belton W A, 1997, Design of an ultra-long endurance unmanned aerial vehicle, MENG, (InProgress), RMIT

Belton W A, 1997, DESIGN OF A MULTI-MISSION ULTRA-LONG ENDURANCE UAV AND PAYLOAD INTEGRATION FOR ATMOSPHERIC RESEARCH., MEng, (InProgress), RMIT

Bowlen G M, 1997, Bonded repair of structures, MENG, (InProgress), RMIT

Burchill M, 1997, Influence of cracks on spur gear tooths stiffness, MENG, (InProgress), RMIT

Chapman H E, 1997, The design and development of a head impact test apparatus, MENG, (InProgress), RMIT

Cross M, 1997, Heat management systems for small internal combustion engines for high altitude autonomous aircraft, MENG, (Submitted), RMIT

Cruz E G, 1997, Excitation of Subsonic Flow Around Delta Wings, MEng, (InProgress), RMIT

Cruz E G, 1997, Aerodynamics of wing strake, MENG, (InProgress), RMIT

Do D H, 1997, End effectors for ply placement and consolidation in low-cost automatedcomposites manufacture, MENG, (InProgress), RMIT

Findlow J, 1997, Investigation of the attenuation of vertical impact loads in general aviation aircraft, MENG, (InProgress), RMIT

Freischmidt G, 1997, Development and characterisation of new laminated hybrid composite materials, MENG, (InProgress), RMIT

Goldstraw W M, 1997, A New Design Methodology for the Next Generation of Aircraft, MENG, (InProgress), RMIT

Hewitt K P, 1997, The influence of aircraft gas turbine engine combuster liner design on metal temperatures, MENG, (InProgress), RMIT

Hoshun R L, 1997, Numerical simulation of optimal control schemes, MENG, (InProgress), RMIT

Integration of CFD into the desigMohan O P, 1997, A systems approach to identify interface requirements for multi-mission helicopter modifications, MENG, (InProgress), RMIT

Jackson K J, 1997, Hail impact damage of thin stiffened fibre composite panels, MENG, (InProgress), RMIT

Joyodiharjo A, 1997, Aircraft design optimisation using parallel computing techniques, MENG, (InProgress), RMIT

Joyodiharjo A K, 1997, Aircraft Configuration Design and Optimisation Using Parallel Computing., MEng, (InProgress), RMIT

Kadambi V, 1997, Evaluation of fourier transform infrared spectrocopy softwareto replace present physical and chemical property tests for monitoring oil condition, MENG, (InProgress), RMIT

Knott D, 1997, Control system designed for the launch of unmanned aircraft from moving platforms, MENG, (InProgress), RMIT

Knott D, 1997, CATAPULT LAUNCH OF UNMANNED AIR VEHICLES (UAVs), MEng, (InProgress), RMIT

Kowalik M, 1997, Suspension design for high speed tunnel vehicles, MENG, (InProgress), RMIT

Lay J P, 1997, Active damping of hinge vibration using smart structures, MENG, (InProgress), RMIT

Love D G, 1997, Preliminary design optimisation of light aircraft., MENG, (InProgress), RMIT

Marsh A J, 1997, Computer Modellling Tecniques for Vehicle Dynamics Simulation, MENG, (InProgress), RMIT

McFarlane S, 1997, The effects of differential braking systems on heavy vehicle dynamic performance, MENG, (InProgress), RMIT

McLean S P, 1997, Integration of Computational Fluid Dynamics (CFD) into the Design Process of Road Vehicles., MEng, (Submitted), RMIT

McLean S, 1997, Integration of CFD into the design process of road vehicles, MENG, (Passed), RMIT

Nguyen V, 1997, Prediction of interlaminar failure in selected graphite/epoxy laminates, MENG, (InProgress), RMIT

Nyugen C, 1997, Investigation into the feasibility of Composites manufacture in Vietnam, Meng, (InProgress), RMIT

Owen G, 1997, Integrated approach to vehicle structure design, MENG, (InProgress), RMIT

Peck R A, 1997, An integrated approach to the design and automated manufacture of composite components, MENG, (InProgress), RMIT

Schnellbeck A, 1997, Integrated flight/payload control for directional payloads on unmanned aerial vehicles, MENG, (InProgress), RMIT

Scott F M, 1997, Cost analysis of composite manufacturing in the Australianaircraft industry, MENG, (Passed), RMIT

Sofyan E, 1997, The identification of MAFV dynamics using flight testing, MENG, (Passed), RMIT

Song B W, 1997, The Role of Boundary Layer in Aerodynamic Noise Generated by a Vehicle "A-Pillar" Vortex, PhD, (InProgress), RMIT

Thompson L A, 1997, Transition from Research Prototype to Manufactured Product, MEng, (InProgress), RMIT

Webb S, 1997, Structural Design of Tubular Composite Frames, MEng, (InProgress), RMIT

Wong I S, 1997, System for the Design of Thin Shell Impact Structures, MEng, (InProgress), RMIT

Minor Thesis

Arman M, 1997, Design of an unmanned air vehicle for long endurance, MINOR THESES, (InProgress), RMIT

Chiuariu G, 1997, Structural sesign and analysis of a light aircraft horizontal stabiliser structure, MINOR THESES, (InProgress), RMIT

Georges S S H, 1997, Resin transfer moulding process development and testing of bismaleimide composite materials, MINOR THESES, (InProgress), RMIT

Kashyap R, 1997, Load analysis and spar design of the tailplane of the CT4 aircraft, MINOR THESES, (InProgress), RMIT

Mallela P R S, 1997, Optimisation of fuel nozzle characteristics for the Allison T56 turboprop engine, MINOR THESES, (InProgress), RMIT

Marshall L R, 1997, Investigation into the Near Field Dispersion of a Jet Discharging into a Gas-Solid Fluidised Bed., MEng, (Submitted), RMIT

Papadopoulos I, 1997, Implementation of advance quality systems in air craft manufacture, MINOR THESES, (InProgress), RMIT

SEIF-ZADEH H, 1997, Adaption of a flutter solver for Unix environment, MINOR THESES, (InProgress), RMIT

Sadraey M H, 1997, Computer program to predict performance, static and dynamic stability of a conventional aircraft, MINOR THESES, (InProgress), RMIT

Sadrameli M, 1997, Helicopter modal analysis and vibrations, MINOR THESES, (InProgress), RMIT

Smith S F, 1997, Dimensional instability of honeycomb core in sandwich construction, MINOR THESES, (InProgress), RMIT

Srinivasan S, 1997, Finite element analysis and testing of the flange of a sine wave stiffned rib, MINOR THESES, (InProgress), RMIT

Wong S, 1997, Design of autonomous flight vehicle, MINOR THESES, (InProgress), RMIT

Zokae-Fard A R, 1997, The implementation of a PC-based modal analysis system using rational fraction polynomials, MINOR THESES, (InProgress), RMIT

Research topics

Abanteriba S, Cross M, & Lachlan L, 1997, Investigation into the heat transfer problems associated with piston engines for high altitude autonomous aircraft., (New), A high altitude flight vehicle is being developed for meteorological data gathering, by the department of Aerospace Engineering. The vehicle will operate at altitudes up to about 50,000 ft. At these altitudes the heat transfer becomes a critical factor affecting both the powerplant and the size of the flight vehicle. This project aims to develop a validated model forthe engine heat transfer characteristics under the operating conditions.

Abanteriba S, Terheci M, Trigg M, Lathabai L, Nanos J, & Giannakoudakis H, 1997, Tribological behaviour of ytrtria-stabilised zirconia underdry sliding conditions when tested against itself and automotive gray cast iron, (New), This project investigates the wear mechanisms of ceramic/cast iron and ceramic/ceramic couples and relationships of these mechanisms with the tested materials' microstructures.The aim is to identify the wear mechanisms in this particular type of testing and provide a correlation betweenmaterial testing parameters and wear behaviour in quantitative terms.

Alesi H, 1997, Postbuckling analysis of 3D composite structures, (Continuing), This research deals with the development of computational tools that allowto predict the load level, the failure location and the failure mode ofpostbuckled thin-walled stiffened composite structures. It aims to assistAustralian aerospace industry in the development of a general postbucklingdesign strategy which in turn should enable industry to attract overseasdesign and manufacturing contracts.

Altamore P F, Tomas J, & Alesi H, 1997, Numerical modelling of vehicle side structures for crashworthiness, (Continuing), The project entails the investigation of modelling techniquesfor the production car side structures to aid with safety design and design rule compliance, to accurately model the human surrogate commonly used to assess vehicle crashworthiness and current passive safety features in vehicles as applied to side impact.

Atipan S, Steiner T R, Hoffmann P, & Danaher R, 1997, Integration between a trailing Vortex and a turbulent boundary Layer in the presence of periodic Excitation, (New), This project aims to investigate the interaction of trailing vortex with a turbulent. Boundary Layer in the presence of periodic excitation. Under this investigation attention will be paid to the experimental and theoretical aspects. The research should provide essential knowledge to designers of Aircraft or Aerodynamic equipment, and to developers of computational Dynamics Code (CFD)

Bardak I, Wood L, & Hill R, 1997, Reduced order modelling of large order dynamic systems, (Continuing), Different methods of reduced order modelling are being studied with theaim of developing guidelines for selection for different applications.

Bayandor J, Abanteriba S, Bates I, & Connely D, 1997, A new zero head-electric power generator foromnidirectional fluid flow, (Continuing), If wave power, river flow and tidal power could be economically exploited, the readily available energy could be significant. The ability to economically exploit wave and river power is dependant upon increasing the efficiency andreducing the cost of the energy conversion devices. This project seeks concrete principles for the development of a new efficient and reliable type ofrenewable energy power generating device.

Belton W A, Bil C, & Lennard M, 1997, DESIGN OF A MULTI-MISSION ULTRA-LONG ENDURANCE UAV AND PAYLOAD INTEGRATION FOR ATMOSPHERIC RESEARCH., (New), THIS PROJECT COVERS THE RESEARCH INTO AND DESIGN OF AN AUTONOMOUS ULTRA-LONG ENDURANCE FLIGHT VEHICLE THAT WILL BE UTILISED FOR ATMOSPHERIC RESEARCH. ADVANCED DESIGN TECHNIQUES AND MANUFACTURING PROCESSES WILL BE UTILISED IN ORDER TO FULFIL THE AIRCRAFTS PROPOSED ENDURANCE AND PAYLOAD REQUIREMENTS.

Bil C, Danaher R, Kneen J, DaCosta G, Valentinis F, & Sofyan E, 1997, The multi-purpose autonomous flight vehicle (MAFV) system, (Continuing), Development of a long-endurance autonomous flight vehicle for general purpose remote sensing applications.The objective of the project is to design and manufacture a technology demonstrator vehicle and to test it for atmospheric research applications.

Bourmistrov A V, Riseborough P, Herszberg I, & McPhee J, 1997, Intelligent high level control for autonomous flight vehicles, (Continuing), The project investigates the applicability of the knowledge-based (fuzzy logic) control methodology to high level management of a Multi-Purpose Autonomous Flight Vehicle. An intelligent control system to be developed must infer, make decisions, cope with unexpected situations and uncertainties, and optimise mission resources under critical time constraints.

Bourmistrov A, Hill R, Riseborough P, & May R, 1997, Non-linear flight control design for a software-manoeuvrable towed target, (Continuing), This project conducts research into performance enhancementof an aerial towed vehicle by feedback control system optimization. Closed loop system behaviour, incorporating constraints imposed by saturation limits on system variables, are optimized using convex analysis techniques. These techniques are embedded within a non-linearapproach control design.

Brown P J, Abanteriba S, Abdel-fattah A, & Lakshminaryana B, 1997, Development of an algorithm for prediction of stall inception in a multistage, high speed, axial flow aircraft engine compressor., (New), The whole process of compressor of stall from undisturbed inlet flowto fully developed stall can occur anywhere between several revolutions and a few hundred rotor revolutions. A nonlinear analysis of the flow in the compressorprior to stall inception may be able to lengthen the time of stall warning.In addition to increasing the stall warning time, the nonlinear analysis couldprovide a consistent prediction of compressor speed and conditions conducive to stall.

Callus P J, Herszberg I, Bannister M K, & Leong K H, 1997, Development of test techniques for textile composites, (New), Increased use of textile composites is partially limited by a lack of understanding of their mechanical behaviour. Tests conducted on traditional composites generally need to be modified before they can satisfactorily measure the performance of textile composites because of the complicated load paths within these new materials. The aim of this project is to establish the most appropriate testing techniques and develop the capability to conduct them at RMIT.

Callus P J, Herszberg I, & Bannister M K, 1997, Investigation of fracture in woven composites, (New), The development of woven composites will be accelerated if the processesoccurring during failure were understood. By identifying features that promoteand inhibit failure, rules can be developed to optimise weave architecture forany given application. The effects of damage must also be evaluated andaccounted for when predicting the mechanical behaviour of structures under load.

Chapman H E, Evans D L, Trivailo P, Gowdy R V, & Collyer D, 1997, The design and development of a head impact test apparatus, (Continuing), A component HIC (Head Injury Criteria) device (or head impact test apparatus) is developed to enable a effective and rapid means of compliance with Federal Aviation Regulation 25.562 dynamic landing conditions. The head impact test apparatus accurately replicates the head trajectory and impact dynamics of an anthropomorphic test dummy during a full scale test thus allowing subcomponent testing to be performed to demonstrate compliance with the regulation.

Coutts R, Freischmidt G, & Frick J, 1997, Development and characterisation of new laminated hybrid compositematerials, (Continuing), This research forms a basis for the development of a hybrid fibre composite material using Australian made starting materials. It aims at developing this material for future application in both aerospace and commercial industries such as the road, rail and marine industries.

Crothers P, Herszberg I, & Kruckenberg T, 1997, Automated manufacture of textile composite structures, (Continuing), Automated fibre placement in conjunction with woven, braided or knitted preforms has the potential to produce composite structures with significant improvement in design flexibility, damage tolerance and production costs. The combination of textile processes which best utilise their advantages to produce innovative demonstrator parts for specific load cases are being examined.

Danaher R A, Hoffmann P H, & Steiner T R, 1997, Investigation of Cyclic Free Stream Flow Turbulence on Boundary Layers, (Continuing), The effects of a laminar boundary layer subject to periodic disturbance is being investigated. This program will make detailed studies of an unstedyboundary layer as it appears the disturbance can have a stabilizing effect.The investigation is experimental using two dimensional flow on a flat plate in a low turbulence wind tunnel.

Do D H, Herszberg I, & John S, 1997, End-effectors ply placement and consolidation in low-cost automated composites manufacture, (New), Current methods for manufacturing composite structures are mainly based on hand techniques, which expensive as well as being prone to variations in the end products. This project will investigate and develop the hardware, software and the methodology for end-effectors needed in automated, low cost composite manufacturing cell.

Drack L, Wood L A, & Nicholson C, 1997, Aircraft noise abatement to meet new noise standards, (Continuing), New international noise standards have rendered compliance difficult for general aviation aircraft. This research is developing a propeller noise prediction and optimisation code to help meet these standards.

Duarte A, Herszberg I, & Paton R, 1997, The manufacture and mechanical properties of RTM composites with interleaves, (New), The introduction of tough polymer interlayers in RTM composites has the potential to improve their impact damage resistance and tolerance.Such a layer could also be used as a binder during preforming, with the possibility of enhancing resin flow in the preform during injection. Research is directedtowards the design, manufacture and mechanical testing of RTM laminates with interleaves, with the object of improving their manufacturability and impact resistance and tolerance.

Falzon P, Herszberg I, & Baker A, 1997, Design manufacture and performance of braided composites, (Continuing), Braiding techniques have the capability to produce near net-shape preforms of the desired structural part whilst providing the required fibre orientations and through-thickness fibre reinforcement. Combined with a resin infusion process, there is the potential to produce low-cost, high quality components with improved damage tolerance. The design, manufacture and performance of composites fabricated from braided textile reinforcements are being investigated.

Findlow J, & Collyer D, 1997, Improving general aviation aircraft crashworthiness, (Continuing), The aim is to improve general aviation safety by devising a replacement seat for existing aircraft to bring the seat standard to that of the FAR 23.562 requirement.

Giess M, Tomas J, & Alesi H, 1997, Shape optimisation of thin-walled structures, (Continuing), The research program aim is to develop a software package tooptimise the shape of composite structures. The objective of the optimisation process will be maximise a given performanceparameter, such as buckling load or component mass. The resulting optimisation code will be applied to practical design problems, such as aircraft wing panels.

Gilhome B, Danaher R, & Baker J, 1997, Investigation of Kayak Paddles for Elite Athletes, (Continuing), Hydrodynamic and biomechanical aspects of flat water kayak paddles are beingexamined. The aim is to design and manufacture paddles for elite athletes which are more efficient than current paddles. The research is in conjunctionwith The Australian Institute of Sport.

Goldstraw M, Bil C, & Nicolson C, 1997, A New Design Methodology for the Next Generation Aircraft, (New), Under current design methodologies, Australian firms producing complete aircraft systems, lack the appropriate design capability to produce larger Aircraft. A newdesign methodology is therefore required to allow aircraft manufacturers to pass the present limiting threshhold. The project seeks to provide a solution to the multi-disciplinary problems involved, and develop a computer based, user friendly conceptual design tool.

Herszberg I, & Karpel M, 1997, Optimal design of aeroservoelastic structures, (Continuing), An optimal design procedure and aeroservoelastic modellingtechnique are being developed to produce an effective interactive on-line design tool. This has the potential to reduce greatly the time taken to determine flutter boundaries. This is particularly important in the case of fibre- composite structures, where the stiffness of the structure may be readily modified.

Herszberg I, Bannister M, Leong K, & Mouritz A, 1997, Mechanical properties of multilayer woven textile composites, (Continuing), The use of multylayer textile preforms for the manufacture of composite structures has the potential to produce more efficient and cost effective structures. This research will characterise the mechanical properties of such composites and determine the influence of preform architecture and processing parameters. This will lead to the development of a design methodology for such structures.

Herszberg I, Leong K, Bannister M, & Khondker O, 1997, Mechanical properties of knitted textile composites, (Continuing), Knitted textile preforms for the manufacture of composite structures have the potential to produce more cost effectivestructures for some applications. This research will characterise the mechanical properties of such composites and determine the influence of preform architecture and processing parameters. This will lead to the development of a design methodology for such structures.

Herszberg I, Leong K, Bannister M, Curiskis J, & Savci S, 1997, Manufacture and design of knitted preforms for composite structures, (Continuing), Knitted textile preforms for the manufacture of composite structures have the potential to produce more cost effectivestructures in some applications. This research includes the development of techniques to knit stiff fragile multi-filament yarns (e.g. glass and carbon) and the design and manufacture of appropriate preform architectures.

Herszberg I, John S, Peck R, Ma L, Crothers P, & KrKruckenberg T, 1997, Low cost automated manufacture of polymer matrix composite components., (New), The research project aims to develop the methodology, software and hardware to facilitate the integrated design for manufacture and low-cost automated manufacturemanof composite structures made from tows, prepreg or dry fabric. Particular attention is being placed on the development of apropriate robotic end This willreduce the cost and increase the reliability of composite structures.

Herszberg I, Loh A, Bannister M, Thuis H, Callus P, & Falzon P, 1997, Open hole fatigue of stitched carbon epoxy laminates, (Continuing), Tension compression open hole fatigue investigations are beingconducted to determine the effect of stitching lay-up sequence on the delamination damage progression and fatigue life of rotated/resin-transfer-molded carbon epoxy laminates.

Herzberg I, Loh A, Bannister M, Th H, Cattus P, & Falzon P, 1997, Openhole fatigue of stitched carbon epoxy laminates, (Continuing), Tension compression

Hill R D, Wood L A, Riseborough P, Eberhard A, Vethecan J K, & Wenscel R, 1997, Application of the theory of conjugate functionals to the design of optimal controllers, (Continuing), A new control design technique which is capable of incorporatingbounds on both response and actuator activity is being developed using the theory of ocnjugate functionals. This project is supported by an ARC Large Grant.

Hoshun R, & Wood L, 1997, Numerical simulation of control schemes, (Continuing), The "L1" control design methodology has recently been successfullyapplied to the vibration control of a flexible structure in a slewingmanoeuvre. Agreement between theory and experiment has been very good,indicating that further numerical simulations will be beneficial to the understanding of this new methodology. This research will furtherinvestigate "L1" designs using simulation, comparing their performancein detail against other more established design methods.

Jansz M, Wood L A, & Danaher R A, 1997, Vibration of wing structures generated by a propeller slipstream, (Continuing), The contribution of the propeller slipstream to structureborne noiselevels has been evaluated by an experimental program on a wind tunnel scale model.

Joyodiharjo A K, Bil C, Cheng W C, & Lubis A A, 1997, Aircraft Configuration Design and Optimisation Using Parallel Computing., (New), The Aircraft Design and Analysis System (ADAS) developed by Dr. Cees Bil will be implemented on the Paragon XP/S parallel computer of the Ormond High Performance Computing Facility. Conceptual design of a transonic aircraft will be performed on both parallel and single processor architectures using a baseline design aircraft provided by IPTN in Indonesia.

Kadambi V, & Abanteriba S, 1997, Evaluation of Fourier Transform Infrared (FTIR) spectroscopy softwareto replace present physical and chemical property tests for monitoringoil condition, (Continuing), Changes in engine parameters or oil condition which can affectlubricant itself normally do not reflect immediate changes inthe level of wear debris in lubricant. Lubricant monitoring can identify the failure of an engine system which cannot be identifiedby the more frequently used monitoring of debris. FIIR spectroscopyoffers the advantages of higher throughput, higher signal to noise ratio and speed of spectral acquisition.

Kendell E, Scott F, Bil C, Herszberg I, & Kirshnan G, 1997, Lifecycle costing and manufacturability of composites, (Continuing), The aim of the project is to develop a computer based system for lifecylce cost estimation and manufacturability assessment during the design of composite components. The project will consolidate and formalise knowledge of maufacturability and lifecycle cost estimation for composite components and develop the capabilitiesand methodologies that will allow the computer based tool to encompass other lifecycle disciplines.

Knott D, Bil C, Kidd W, & Riseborough P, 1997, CATAPULT LAUNCH OF UNMANNED AIR VEHICLES (UAVs), (New), The objective of the research project is to investigate the dynamics and control considerations of UAVs during catapult launch in particular from ships:a survey of the mechanisms for UAV catapult launch, assessment of the dynamic behaviour of a UAV during and after launch, development of a control system that can generally optimise the flight trajectory from launch and steady climb out, demonstrate the proper working of the control system through computer modelling and simulation.

Koerwien T, Leong K H, Herszberg I, Cox B, Bannister M K, & Nicolaidis A, 1997, Development of multilayer woven distance fabric preforms for composite structures, (New), This project focuses on the development of such multilayer woven distance fabric preforms made from carbon, glass and other structural fibres The research concentrates on the development of techniques and processes to manufacture such preforms and composites with fibres and fibre architectures suitable for various structural applications. These composites have superiorimpact resistance and low cost.

Kondratiev K, Hill R, Riseborough P, & Evans M, 1997, Development and investigation of predictive control systemsfor remotely piloted vehicles, (Continuing), This project conducts research into performance enhancement of an aerial towed vehicle by feedback control system optimization. Closed loop system behaviour, incorporating constraints imposed by saturation limits on system variables, are optimized using convex analysis techniques. These techniques are embedded within a non-linearapproach control design.

Koschitzke P, & Steiner T, 1997, Flow Field Created by a Planar Jet in Cross Flow, (Continuing), This research investigates the turbulent flow field created by a thin fan of air released normally into a cross-flow through a nozzle slit.The flow is dominated by a pair of counter-rotating vortices which curve and trail downstream.

Koskechitzke P K, Steiner T R, & Hoffmann P H, 1997, Aerodynamics of Crop Spraying (Jets in Cross-Flow), (Continuing), A substantial experimental investigation is currently in progress through which velocity vector fields and maps of pressure and turbulence quantities are being measured with high spatial resolution in a flow field created by injecting an air jet through a nozzle into a wind tunnel. Preliminary tests indicated that the broad features of this flow were similar to the features of the flow produced when a liquid was present in the spray.

Kowalik M, Collyer D, & Alesi H, 1997, Suspension design for a high speed tunnel vehicle, (Continuing), This project is investigating the application of air bearing technology to a vehicle operating in a vacuum environment.

Kuan B, & Abanteriba S, 1997, Computer Simulation of Flows in the Recirculation Zone of a gas turbine Engine Combustor, (New), The project examines the turbulent, chemically exothermic reaction flows in the recirculation zone of a gas turbine engine combustor. CFD code which predicts the dynamics of fluid particles within the recirculation will be developed. This code will be used used for the flow analysis of gas turbine engines.

Kusumah L, Wood L, & Trivailo P, 1997, Robust flight control law design for a flexible aircraft, (Continuing), The conventional approach to the design of flight control lawsis to perform point designs for a large set of trim conditions at various flight conditions and then construct a gain schedule by interpolating gains. While this approach has been satisfactorily appliedfor many aircraft, many improvements can still be made. This researchis investigating the use of "H2" and "H infinity" optimal designs forrobust control of flexible flight structures.

Lay J P, Riseborough P, Tomas J, & D'Cruz J, 1997, Active damping of solar panels using smart structures., (Continuing), The programme develops an active hinge design for the application ofvibration suppression of satellite solar array panels. Dynamics models will be developed for hinges with surface bonded peizoceramic actuatorsand sensors. The models include the inertia and stiffness of the piezoceramic material and bonding layer.

Loh A, Herszberg I, & Hill T, 1997, Damage tolerance of glass fibre reinforced plastic under cyclic loading, (Continuing), The investigation of the fatigue behaviour of fibreglass couponsloaded in bearing through a steel housing is being investigated, subsequent to the failure of such a root rib attachment during a full scale fatigue test of a Janus B glider.

Love D, Bil C, & Evans D, 1997, Preliminary design of a two-seat very light aircraft (JAR-VLA), (Continuing), The design and analysis of a light two-seat personal transportaircraft to the requirements of the JAR-VLA standard is undertaken to result in detailed analysis and the production of technical drawings appropriate for the construction of aprototype. Particular emphasis will be placed on a high performance/cost ratio relative to competing aircraft types.

Maharaj P, Wood L A, Jennings A, & Wright T, 1997, Design and optimisation of automotive components for improved safety,vibration, cost and weight, (Continuing), Shape optimisation for improved safety, vibration, weight and cost is thefocus of this research project. The project aims to extend the capabilitiesof existing software packages for structural optimisation in the area ofsteady state and transient vibration response. The developed code will beused to solve relevant design problems in the automotive industry.

Marsh A J, Tomas J, & Wood L A, 1997, Computer Modelling Techniques for Vehicle Dynamics Simulation, (New), The project involves evaluating current methods and theory of vehicle dynamics simulation to identify limit techniques. Alternative approaches will be investigated and evaluated using practical examples, with the of extending the boundaries of simulation, and making it more useful to the automotive industry

Merlo P R, Riseborough P, Alesi H, & Collyer D, 1997, Active piezoelectric control of a flexible dual link robotic manipulator, (Continuing), A robotic manipulator of low mass and stiffness is normally subject to highstructural deformation and vibration. By integrating piezoelectric sensorsand actuators, structural vibration will be reduced by measuring vibrationand controlling the actuators in real time. An energy method, in conjuction with finite element techniques, will be used to derive the equations of motion and a Liapunov controller employed to ensure global stability of this non-lineartime varying system.

Mohan O, Bil C, & Kam B, 1997, A systems approach to identify interface requirements for multi-mission helicopter modifications, (New), The objective of the project is to identify the various systems required for helicopter multi-mission roles.A helicopter match format is developed by identifying the possible mount points within the interdisciplinary technical constraints.The interface parameters are integrated synergistically to suitthe helicopter match format.A particular helicopter will be selected as a case study for conversion to a specified mission to test the suitability ofthe interface requirements.

Ng C, Steiner T, & Gear J, 1997, A computational investigation into the interaction between a boundary layer and a free vortex, (Continuing), The interaction between a trailing vortex close to a solid surfaceand the boundary layer growing on the surface is modelled computationally. The computational code employs a Finite Element method in an Object Oriented programming style. Various turbulencemodels will be compared. Experimental data from a companion project will be used to validate the model. The project aims to improve modelling of this type of flow with a long-term view to design application.

Nguyen C, 1997, Investigation into the feasibility of Composite manufacture in Vietnam, (Continuing), An investigation into the current status and required technology, procedures and infrastructure required for the manufacture of advanced structural composites in Vietnam.

Nguyen M Q, & Herszberg I, 1997, Forming mechanics of the reinforcement fabrics for the manufacture of advanced composites., (New), The forming mechanics of reinforcing fabrics for the manufacture of advanced composite structures has a low cost manufacturing potential based on alternative forming techniques. The viability of alternative forming process requires comprehensive knowledge of the processes involved. This project will determine the forming conditions required.

Norwood C, Wood L A, & Sek M, 1997, Vibrational techniques for damage detection in structures, (Continuing), Structural power flow methods are being evaluated to assess their effectiveness as a non-destructive evaluation technique for the detection of damage in structures.

Owen G, Tomas J, & Malkusson R, 1997, Integrated approach to vehicle structure design, (Continuing), An integrated procedural approach to vehicle structure design prior to prototype manufacture are being developed. High priority vehicle structureperformance objectives will be identified and defined. Tools and techniqueswhich address these objectives will be investigated and a strategy whichimplements and applies these tools shall be formulated and demonstrated through practical applications.

Peck R, Herszberg I, & John S, 1997, An integrated approach to the design and automatedmanufacture of composite components, (Continuing), The project will develop the methodology, software and proof of concept hardware to facilitate the integrated design for manufacture and automated manufacture of composite structures made from prepreg or dry fabric.

Qi B, Herszberg I, Baker A, & Bannister M, 1997, Environmental effects on mechanical properties of stitched fibre reinforced composites, (Continuing), The mechanical properties of thin fibre reinforced composites can be improved considerably by incorporating through-the-thickness reinforcement. This technique allows the production of very efficient structures with improved damage tolerance. The environmental effects on the mechanical properties of such composites are the subject of this investigation. This work is being undertaken in conjunction with the Cooperative Research Centre for Aerospace Structures.

Schnellbeck A, Bil C, & Kidd W, 1997, Integrated flight/payload control for directional payloads on unmanned aerial vehicles, (New), A system is to be designed for controlling payloads on unmanned aircraft. Stabilisation will be provided to removeturbulence and vibration effects. Combining the pointing control system with the flight trajectories generated, ensures that the payload can be kept pointing at a manoeuvering object, even while the carrying aircraftis itself manoeuvering.

Scott F, Herszberg I, Bannister M, & Kendall E, 1997, Cost analysis of composites in the Australian aircraft manufacturing industry, (Continuing), This research investigates the costs of the various steps in the manufactur of composite structures and will identify the high cost areas so that alternative design and/or manufacturing procedures may be considered. A costing model will be developed for the production process so that the effects of changes in design or production methods may be evaluated.

Scott C, Wood L, Vethecan J, & Hill R, 1997, Optimal robust control of uncertain systemes with mixed time and frequencydomain constraints, (Continuing), This research is investigating robust control of optimal designs usingthe "L1" control design methodology. It will allow the inclusion of disturbancerejection, plant uncertainty and frequency domain constraints. Theoreticalformulations will be validated by experimental implementation. Initialexperimental results have been encouraging.

Scott M, Mileshkin N, & Frick J, 1997, Postbuckling of stiffened fibre composite panels, (Continuing), The objective of this research is to contribute to the developmentof viable postbuckled fibre composite structures by providing validatedmethods for design and analysis of potentially useful configurations.

Scott M, Cheung A, Thomson R, Jackson K, & Xu H, 1997, Optimisation of aerospace composite structures, (Continuing), The aim of this project is to develop validated design procedures,which will enable the optimisation of advanced fibre composite structures. The design of stiffened panels for impact, static and fatigue loadings is being investigated using both analytical andexperimental techniques. Structural performance is predicted withimplicit and explicit finite element modelling codes.

Scott M, Raju J, Chueng A, Craddock S, & Newman P, 1997, Design, manufacture and testing of a postbuckling co-cured composite control surface, (Continuing), A transport aircraft control surface has been designed and manufactured, which demonstrates several advanced composite technologies.A range of innovative design and manufacturing procedures for a carbon fibre/epoxy aileron,featuring thin skins with multiple chordwise blade-stiffeners, have been developed.Demanding structural performance and cost targets were achieved by using advanced, non-linear finite element techniques in thedesign of the co-cured postbuckling structure.

Searl A, Scott M L, Heller M, & Rose L R F, 1997, Design Optimisation of Stiffened Fibre Composite Aircraft Structures, (New), Recent developments in engineering software have made the optimisation of complex structural components more viable. The principal purpose of this project is to develop optimisation techniques that will improve the overall structural design methodology as applied to advanced fibre composite materials.It will ultimately result in the production of more efficient composite structures which take full advantage of their unique structural tailoring capabilities.

Seif-Zadeh H, Wood L A, & D'Cruz J, 1997, Active flutter suppression using smart structures, (Continuing), This research project is investigating the application of 'smartstructures' techniques to suppress flutter modes so that flutter velocities may be increased.

Sharma S C, & Abanteriba S, 1997, Tribological Performance Monitoring of Machines Using a Systems Approach, (Continuing), The aim of the Investigation is to develop a mathematical algorithm with the helpof graph Theory and matrix algebra to determine the tribological performance of machinical systems. Parametric dependent performance index will be developed. This index will be useful in the selection of design alternatiives, on-line condition monitoring and analysis of the tribological condition of the machines in general.

Sinha A K, Wood L A, Kam B H, & Caterson J, 1997, A systems approach to helicopter modifications for multi-mission roles, (Continuing), A system engineering approach is being applied to multi-mission modifications for helicopters to maximise mission performance fordifferent roles. Medical and military roles are being evaluated for a detailed case study.

Song B K, Steiner T, & Watkins S, 1997, The Role of Boundary Layer in Aerodynamic Noise Generated by a Vehicle "A-pillar" Vortex, (New), This project involves the experimental investigation of Aerodynamic noise generated by the "A-pillar vortex of an idealised road vehicle. The relationship between the size of the "A-pillar vortex, and main influencing parameters will be determined. The objective of the investigation is to identify and understand the influence of key parameters on this noise generation, and to ultimately enable its control and prediction.

Srinivasan S, Scott M L, & Mouritz A P, 1997, Critical Defect Failure Criteria in Thick Composite Structures, (New), Fibre composite materials are progressively being introduced into larger andthicker structural components. The need to improve the understanding of sizeeffect phenomena and their influence on the design of large composite structures is therefore becoming very important. This project is intended toestablish failure criteria which account for the size effects and to contributeto the development of optimised composite structures.

Steiner T R, McLean S P, & Bil C, 1997, Integration of Computational Fluid Dynamics (CFD) Into the Design Process of Road Vehicles, (Continuing), A methodology is being developed for integrating CFD into the design process to estimate aerodynamic characteristics of road vehicle geometries, quickly and with acceptable accuracy. This integration is intended to assist engineers and stylists early in the design of a new vehicle. The research will examine the parameters which influence the rear window separation point, including various bonnet and windshield geometries. Experimental data will be used for validating the method.

Steiner T R, Cruz E G, & Henbest S M, 1997, Excitation of Subsonic Flow Around Delta Wings, (Continuing), This research is investigating controlled flow excitation in subsonic delta wing flows as a paradigm for all subsonic slender wing flows. The controlled flow excitation will be small in amplitude and periodic in order to stimulate and "lock-in" the natural flow instabilities. The influence of this excitation on the three-dimensional turbulent flow field generated by the delta wing will be determined.

Steiner T R, Creazzo J, & Hoffmann P H, 1997, Interaction Between Vortices and Surfaces, (Continuing), A substantial experimental investigation, in progress, is measuring velocity fields, pressure and turbulence quantities with high spatial resolution in some fundamental but incompletely understood flows in which strong vortical motions are modified by the presence of a solid surface. The emphasis is on improving understanding of the relevant physics. The project aims to improve modelling of this type of flow with a long-term view to design application.

Steiner T, Creazzo J, & Hoffmann P, 1997, Interaction between vortices and surfaces, (Continuing), The interaction of strong vortices with boundary layers on nearby solid surfaces is not well understood at present, particularly when the vortices are developing where the interaction begins. Research is in progress to acquire and analyse 3D velocity data, and distributions of pressure and turbulence in generic flows. This data will be used to improve understanding of the turbulent transport phenomena and ultimatelyto validate a computational model in a companion project.

Thompson L A, 1997, Transition from research prototype to manufactured Product, (Continuing), The Research examines solutions to the problems of adapting research and prototype data to initiate manufacture. Issues investigated include technology, procedures and training. The RMIT "Superbike" is used as a model for this research.

Valentinis F, Riseborough P, Kneen J, Thompson L A, & Ciesielski V, 1997, A fault-tolerant, adaptive architecture for the intelligentcontrol of an autonomous flight vehicle, (Continuing), The research programme seeks to develop a set of algorithms comprising a control architecture for an autonomous flight vehicle. The architecture will employ a learning mechanism which will be inherently fault tolerant. A major focus of the research will be concerned with how to organise the architecture in such a way as to ensure performance levels are competitive with conventional architectures.

Van Kralingen A, Wood L A, & Nicholson C, 1997, Aeroelastic design criteria for general aviation aircraft, (Continuing), A thorough aeroelastic evaluation of a general aviation aircraftis being with the aim of determining the value of empirical criteriawhich are currently in use in the industry. Alternative criteria maybe proposed.

Vethecan J, Hill R, Riseborough P, & Wood L, 1997, Design of robust optimal controllers for flexible structures with integrated sensors and actuators, (Continuing), Application of a new technique for the optimal design of linear feedback control systems for the control of structures with integrated sensors and actuators. The proposed technique improvesperformance by optimising quantities using the mathematical theory of conjugate functionals. This increases flexibility in formulationof design requirements by making it possible to incorporate directlybounds on transient response.

Wang J, Scott M L S, & Wang C H, 1997, Computer Simulation of Impact Damage of Stiffened Composite Panels Using Advanced Finite Elements Methods, (New), Computer nodels of material degradation have the potential to predict impact and damage tolerance of composite structures. Computer modelling of impact damage using dynamic nonlinear analysis enables more accurate simulation of geometric nonlinear response and prediction of impact damage of composite panels in realistic situations. The developed models will be applied, together with failure criteria, to predict impact tolerance of composite panels.

Webb S, 1997, Structural design of Tubular composite Frames, (Continuing), Structural design and analysis of materials and configuration for the racing bicycle frames is investigated. Recent rule changesin Olympic UCI regulations require the use of tubular racing frames.This investigation looks at the application of FEM and load data to apply advanced aerospace materials.

Wharington J, Herszberg I, & Pszczel M, 1997, Autonomous flight vehicle control using neural networks, (Continuing), The research efforts are concentrated on the development of autonomous controller architectures incorporating reinforcement learning and the associated training, testing and evaluation methodologies. The autonomous control of a simulation of a sailplane, flying in a field of thermals, will be used as a testbed for the controller.

Wong I S, 1997, System for the Design of Thin Shell Impact Structures, (Continuing), The design of motorcycle and bicycle safety helmets is currently an interative approach combiningnumerous manual processes. This research looks at applying advanced computer aided design and analysis techniques to helmet design.

Zalizniak V, Wood L, & Tso Y, 1997, Modelling of junctions of plate-stringer structures for predictionof noise radiation, (Continuing), Skin-stringer junctions, widely used in both aircraft and ships,are being modelled to obtain a thorough understanding ofstructure-borne noise in these constructions. A three-dimensionaljunction model is being developed with the aim of investigatingthe transmission of noise into the surrounding medium. Finite difference schemes and the method of characteristics is beingused to simulate the structural dynamics.

Zokaei-Fard A, Wood L, & Trivailo P, 1997, Effect of active flight control systems on aircraft fatigue life, (Continuing), Active controls have been used to alleviate gust loads on airframesas well as to augment stability, however, the influence of activecontrols on airframe fatigue life has received little attention.This research program is investigating how the control systemwill alter the fatigue environment in terms of both load amplitudes and load re-distribution.