Keystone is a world leader in the design, development, fabrication and qualification of propellant and pressure storage tanks used in satellite, spacecraft and launch vehicle applications. This capability includes surface tension propellant management devices, as well as elastomeric and metal rolling diaphragm positive expulsion technologies. Keystone’s propellant storage systems design and analysis capabilities include negative G, positive G and low gravity fluid dynamics analysis, propellant surface tension contact angle effects analysis & test, and simulated fluid dynamics and performance modeling using FLOW 3D CFD software. Keystone’s unique, ultra-thin wall metal spin-forming, machining and welding processes provide the ability to create optimum weight/cost designs for both all metal and composite tank assemblies. Technology is available for titanium and aluminum tank applications.
Design and analysis capabilities relative to propellant storage and other critically engineered, flight weight fabricated assemblies include; Thermal analytical capabilities using Finite-Difference modeling to represent heat leak paths, heat flow and temperature distributions using SINDA/G thermal analyzer, and shell radiatin modeling. Keystone also possess complete mechanical analysis capabilities using MSC/Nastran FE shell modeling, non-linear, stability and dynamic FE analysis, and fracture mechanics and fatigue analysis to ultra flight weight aerospace standards.