无伞末敏弹大攻角扫描运动稳定性分析

doi:10.7527/S1000-6893.2015.0051

Abstract

Abstract:

Aimed at the characteristic of large angle of attack circular motion at stable scanning stage, the angle of attack equation's approximate analytical solution for non-parachute terminal sensitive ammunition is gained under the action of general-form equatorial damping moment. On this basis, the kinetic stability in this case is analyzed by the method of amplitude plane. The result shows that different from the fact that non-parachute terminal sensitive ammunition under the action of quadratic equatorial damping moment cannot form stable large angle of attack circular motion to realize stable scanning, the one which is under the action of general-form equatorial damping moment can do it, in which the fact that the equatorial damping moment is related not only to the angle of attack's amplitude but also to its change rate is considered, and the fact that nutation damping's feature is different from that of precession damping is also considered. Finally, the requirement to be satisfied to realize stable circular motion is deduced and the calculating example is given, which provide a theoretical reference for the structural and pneumatic design for non-parachute terminal sensitive ammunition.

Key words: terminal sensitive ammunition, smart munition, large angle of attack, kinetic stability, circular motion, stable scanning

CLC Number:

V212
TJ410.1

SHU Jingrong, YANG Yulin, ZHANG Ting, YANG Haibo. Analysis on kinetic stability for non-parachute terminal sensitive ammunition's scanning motion at large angle of attack[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(10): 3411-3417.

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Analysis on kinetic stability for non-parachute terminal sensitive ammunition's scanning motion at large angle of attack

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