Fusion Control of Gas Pressure and Noise in Sealed Cabin of Manned Spacecraft

The noise environment is an important medical index. In order to realize the long-term resistant of astronauts in orbit, it's necessary to strictly control the noise in the sealed cabin of manned spacecraft. In the paper, the formula of gas pressure and monopole source is deduced according to theoretical formulas. Then, the model of monopole source is established, and the analysis result of the theoretical formula is confirmed by the direct boundary element simulation. Next, the simulation analysis results are summarized, and the law that the sound pressure is proportional to the gas pressure is extended to the noise environment in the sealed cabin of manned spacecraft. Finally, the method of fusion control of gas pressure and noise in sealed cabin of manned spacecraft is proposed.