supersonic flight, air breathing engine, performance test, control system design, flight path, test facility, high altitude balloon, free fall, Mach number, simulation, PD control, angle of attack
Musashi Institute of Technology
Japan Aerospace Exploration Agency
Japan Aerospace Exploration Agency
Japan Aerospace Exploration Agency
Musashi Institute of Technology
Japan Aerospace Exploration Agency
出版者
宇宙航空研究開発機構宇宙科学研究本部
出版者（英）
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
雑誌名
第17回アストロダイナミクスシンポジウム講演後刷り集 2007
雑誌名(英)
Proceedings of 17th Workshop on JAXA Astrodynamics and Flight Mechanics
The microgravity experimental system that uses the high altitude balloon is now developed in ISAS/JAXA. This experimental method is, (1) the high altitude balloon is raised to 40 km altitude, (2) the experimental system is separated, (3) a free fall for 30-40 seconds is achieved. In the experiment, the fall body enters a supersonic state when the free fall time exceeds about 30 seconds. Therefore, it can be expected that this fall body will offer a simple supersonic flight experiment besides the microgravity experiment. Actually, it is scheduled to equip the air inhalation type engine developing in the future. In this future experiment, an enough supersonic flight time is necessary to evaluate the performance of the engine. So it is thought that the nose of the body have to be put up since a simple fall from the altitude 40 km is insufficient. This paper evaluates whether a supersonic flight can be achieved in the present experimental system, and whether a supersonic time can be extended by putting the nose up. Some simulation results in several conditions are shown to verify the effectiveness of the putting the nose up of the experimental body.
Discussion about supersonic aviation and pullout control in free-fall flying object from balloon
