By Cantor B. (ed.), Assender H. (ed.), Grant P. (ed.)

Aerospace fabrics presents a grounding in state of the art aerospace fabrics know-how, together with advancements in aluminum, titanium, and nickel alloys, in addition to polymers and polymer composites. specialists in every one subject have contributed key overviews that summarize present wisdom and point out destiny traits. The booklet starts off by way of outlining the commercial functions to airframes, aeroengines, and spacecraft prior to delving systematically into particular fabrics. It examines light-weight fabrics after which makes a speciality of fabrics fitted to high-temperature functions. The publication combines views in physics, fabrics technology, and mechanical and aeronautical engineering.

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1. Selected alloy systems. Alloy system Main precipitation system Al-Cu (2001 type) Al-Cu-Mg (2024 or 2618 type) Al-Mg-Si-Cu (6013 type) 0 (Al2 Cu) S 0 (Al2 CuMg) 0 (Al5 Cu2 Mg8 Si7 ) 0 (Mg2 Si) 0 (Al3 Li) T1 (Al2 CuLi) Al-Li-Cu-Mg compositions from the S 0 and 0 þ 0 precipitation systems was made on which the effect of minor alloying element and thermo-mechanical process variations was studied. Results obtained in this project [5] were very satisfactory: all the alloys tested presented a creep behaviour and a fracture toughness much improved as compared with CM003 alloy (enhanced 2618), which was, at that time, the best reference in terms of creep/damage tolerance compromise.

The stock sheets were machined to provide suitable thickness distribution after forming. Superplastic behaviour has been of great importance as a forming technology for difficult-to-work materials such as metal matrix composites and intermetallic compounds. Superplastic forming has enabled advanced but less workable materials to be plastically formed and therefore become cost competitive, facilitating the practical use of high performance materials and improving the performance of many aerospace components.

4 illustrates the Muses-B antenna launched in 1997 to be used aboard the satellite for Space-VLBI (Very Long Baseline Interferometry). A 10 m diameter parabolic antenna with mesh surface was successfully deployed with steps extending the six extendable masts in low earth orbit. 5 shows a deployment test of the MUSES-B flight model antenna. This incredibly complicated system consists of 6000 fine cables of high modulus Kevlar 149 aramid covered by a CONEX aramid net. Because of the requirement for high surface accuracy, each cable must keep precisely its length without creep under tension in space.

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