Development of New Composite Propellant Tank for Satellites

Abstract

Satellite components falling to the ground are a crucial problem, particularly titanium tanks in propulsion systems. Satellite tanks are generally made of titanium alloy because it is light and compatible with propellants used for the satellite. However, it also has a high melting point, which hinders melting on re-entry. To replace the titanium tanks, JAXA has studied as the tank for ground damage prevention on re-entry since 2010 and has started developing a new composite propellant tank since 2013. The tank is targeted; not only due to its demise properties but also its extended propellant storage, cost-effectiveness and a short delivery time. For the first development step, the minimum tank (DM: Development Model #1) which has the shortest cylindrical segment length and a volume of 250L were manufactured to confirm the strength proof of critical portions and the adequacy of production techniques. There are also plans to manufacture a PMD (Propellant Management Device) separately to the tank shell. This paper describes the design, trial productions, and data acquisition tests used when developing the new tank.