A trade study of a phase change system in a stratospheric airship based on a triple gasbag concept

By means of regulating the volume of the phase change gasbag, a new stratospheric airship is proposed based on a triple gasbag concept (TGC), which could stay stationary at the same altitude during day and night. A trade study of the phase change system (PCS) is performed, to improve the feasibility of this kind of new stratospheric airship. Ammonia and butane based derivatives are suitable phase change working gases, particularly, ammonia has...