Modeling and Simulation of Air-Vehicle Entry Scheme Based on Composite Precooling Engine
Based on the composite precooling engine, a Single-Stage-To-Orbit (SSTO) scheme is proposed. The climbing process is divided into three stages. The dynamic model, the air-vehicle model and the motion model are set up, and the feasibility of SSTO is studied using the numerical simulation. In order to improve the SSTO scheme, a SSTO scheme based on launching vehicle is proposed and a Two-Stage-To-Orbit (TSTO) powered by the composite precooling engine in the first stage and the rocket engine in the second stage is proposed. The results show that if the SSTO scheme is achieved, the structural coefficient of the air-vehicle should be less than 0.13, which has great technical difficulty. By adopting the SSTO scheme based on launching vehicle, the structural coefficient can be relaxed to 0.19, and the technical difficulty will be greatly reduced. The adoption of the TSTO scheme can not only effectively reduce the technical difficulty, but also increase the payload from 15t to 20.31t.