Effects of unsymmetrical stability derivative characteristics on reentry vehicle trim angle behavior
A quasi-steady analytical theory is developed to investigate the effects that unsymmetrical stability derivative characteristics can have on the trim angle behavior of slender rolling reentry vehicles. For mass, aerodynamic and inertia asymmetries, the predicted trim angle behavior patterns are very unstable in comparison to tae well-known patterns displayed by vehicles with symmetrical stabiltty derivative characteristics. Near the resonances small asymmetries in the static moment slope characteristics are shown to cause large sometimes unbounded increases in trim magnification and jump discontinuities in windward meridian position. The analytically predicted trends are verified by six degree- of-freedom numerical simulations. (auth)
- Research Organization:
- Sandia Labs., Albuquerque, N.Mex. (USA)
- NSA Number:
- NSA-29-028947
- OSTI ID:
- 4301940
- Report Number(s):
- SLA--73-5635; CONF-740114--2
- Country of Publication:
- United States
- Language:
- English
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