Summary

Description

<p>The storage of cryogenic propellants is challenging because heat leaks into the cryogenic storage tanks no matter how good the insulation, resulting in a necessity to vent and maintain the propellant at the appropriate thermodynamic condition for engine operation and tank safety.  Although it is challenging to store LO2, it is even more difficult to store LH2 because of its lower boiling point.  There is therefore an increased focus for demonstrating LH2 storage in vent-free conditions.</p>