Abstract: Neutron imaging enables direct visualization of evaporation and condensation of cryogenic propellants in metal containers such as aluminum and stainless steel. CFD models of propellant behaviors inside the large tanks have ...

Abstract: The condensation and evaporation of hydrogen under cryogenic conditions is visualized by using neutron imaging at the BT2 Beam Facility at the National Institute of Standards and Technology (NIST). The condensation and ...

Abstract: One of the key limitations to longterm space missions is to avoid propellant boiloff in a microgravity space environment. Even with the use of active and passive controls of propellants, boil off is inevitable. Longterm ...