Direct Solution of High-pressure Air Cold-launch Optimal Control Problem

High-pressure air cold-launch can provide advantages for commercial launches, from both safety and cost considerations. In military applications, missiles' structures are solid to be accelerated more than 10g by engine exhaust flow. The critical part of implementing commercial systems is precisely controlling energy-releasing from the high-pressure gas steady through valves, as payloads and commercial rockets demand strictly limited acceleration and dynamic pressure in the launching process. This paper tried to solve the cold-launch problem with acceleration constraints. After elaborating the differential equations for the system, we introduce a direct solution by particle swarm optimization. The simulated results prove the method's feasibility. The first version of demonstration experiments based on current work will allow exploring the problem with more details.