Accession Number : ADP006810

Title :   Aspects of Compression in Aerospace Composites - Future Requirement,

Corporate Author : BRITISH AEROSPACE PLC WARTON (UNITED KINGDOM)

Personal Author(s) : Green, Stuart

Report Date : APR 1992

Pagination or Media Count : 13

Abstract : The significance of structural mass in combat aircraft cannot be overstated, as it affects all aspects of performance, particularly, turn rate, climb rate, acceleration, range and payload. To keep the overall mass of combat aircraft to a minimum level and optimise performance, designers have over recent years exploited the benefits offered with advanced polymer composite materials. These can offer specific mechanical properties which exceed those of more conventional aircraft materials, for example the alloys of aluminium. In particular, significant benefits can be gained in relation to tensile strength and modulus. The ability to resist loads in compression is, however, particularly important in some aircraft structures, for example the wing. For minimum mass design, the material chosen for such structures should provide superior specific compression properties. This is particularly true following low energy impact, which in many cases is barely visible, but which can lead to significant strength reductions and limit the design allowable strains.

Descriptors :   *COMPOSITE MATERIALS, *POLYMERS, *MILITARY AIRCRAFT, *AEROSPACE CRAFT, ACCELERATION, AIRCRAFT, ALLOYS, BENEFITS, COMPRESSION, ENERGY, IMPACT, LOW ENERGY, MASS, MATERIALS, MECHANICAL PROPERTIES, PAYLOAD, REDUCTION, STRUCTURES, TENSILE STRENGTH, WARFARE, WINGS, ALUMINUM ALLOYS, TENSILE STRENGTH, NATO, MODULUS OF ELASTICITY, CARBON FIBERS, FAILURE(MECHANICS), REPRINTS.

Subject Categories : Laminates and Composite Materials
      Aircraft
      Research and Experimental Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE