Thermal Insulation for Liquid Hydrogen Space Tankage
The thermal insulation for a cryogenic stage is closely related to the intended mission of the space vehicle. For a low-orbit, short-duration flight (less than 1 hr), the thermal insulation is used primarily to restrict the heat flux into propellants induced by kinetic heating while passing through the earth’s atmosphere. When dealing with a final stage, the weight of the non-jettisonable insulation is fully chargeable against the stage payload capability. A drastic optimization must then be carried out, taking into account boil-off losses and cavitation losses at the turbopumps, on the one hand, and insulation weight, on the other hand.
KeywordsPermeability Foam Anhydride Cavitation Calorimeter
Unable to display preview. Download preview PDF.