Abstract:

The optimum two-impulse transfer trajectory is investigated. Taking the interplanetary mission as the background, the state transition matrix and variational method are utilized, and the analytical partial derivatives of the index with respect to the adjustable variables is inferred. Based on these analytical partial derivatives, a fast optimization algorithm for twoimpulse transfer trajectory is given out. The problems of slow speed and the uncontrollable precision flaws in the traditional optimization of interplanetary two-impulse transfer trajectory are solved.

Key words: two-impulse , transfer , trajectory,  , state , transition , matrix,  , variational , method,  , interplanetary , trajectory,  , launch , opportunity