نتایج جستجو برای: sounding rocket
تعداد نتایج: 8858 فیلتر نتایج به سال:
The roll dynamics of a 5kg, 1.3 m high sounding rocket are analyzed in a vertical wind tunnel. Significant turbulence in the tunnel makes the system identification of the effective inertia, damping and asymmetry with respect to roll challenging. A novel method is developed which decouples the disturbance from the rocket frame’s intrinsic roll dynamics and allows accurate prediction of roll rate...
Abstract The paper describes how the attitude of a sounding rocket, launch vehicle or satellite with respect to Earth can be estimated from camera images horizon. Details about detecting horizon in image, fitting hyperbolae ellipses detected curve and deriving nadir vector corresponding error covariance fitted conic section are given. presented method works at low heights, where projected mostl...
Separation system is one of the most important systems in rockets. The influence of this system on mission success cannot be ignored. In this paper, reliability of a sounding rocket separation system is determined using block diagram and FMEA . This system is based on the flexible linear shape charge cross-section and a spring mechanism to accelerate separation. In this investigation, the relia...
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