Aircraft With The Plane Fixed Thrust Orbit Strategy

The problem of optimal continuous thrust Coplanar orbit transfers is studied in this paper. A simplification in the foundation of actual dynamics model and the differential equation of aircraft movement are put forward,we have non-dimensionalized the equations.an optimal guidance model for orbit transfers is accomplished by the optimal control theory. We analyze every kind of terms of extremum,and proceed the early integral calculus and analyze the boundary terms.On the base of all above mentioned,we study the computational methods deeply. Compared with other algorithms,The first-order gradient algorithms and the neighboring extremal algorithms are adopted to resolve TPBVP,at the same time we found out the relation between them. And with the results of calculation obtained by the first-order gradient algorithms which is initial value of the neighboring extremal algorithms we can transform the problem into a face to point one ,then a good result is attained by the neighboring extremal algorithms .In the end,the course of orbit transfers is depicted.