David J. Chato

• Analysis of the nonvented fill of a 4.96-cubic-meter lightweight liquid hydrogen tank
• Cryogenic transfer options for exploration missions
• Ground testing for the no-vent fill of cryogenic tanks
• Ground testing on the nonvented fill method of orbital propellant transfer
• Initial experimentation on the nonvented fill of a 0.14 m³ (5 ft³) dewar with nitrogen and hydrogen
• Review and test of chilldown methods for space-based cryogenic tanks
• Small experiments for maturation of orbital cryogenic transfer technologies
• Status and design concepts for the hydrogen on-orbit storage and supply experiment
• Thermodynamic modeling of the no-vent fill methodology for transferring cryogens in low gravity
• Vented tank resupply experiment--flight test results