The objective of this study is to perform model validation of a liquid hydrogen (LH2) tank chill and no-vent fill using an upward facing pipe under normal gravity (1-g) using three different commercial
Liquid Hydrogen Tank Chill and No-Vent Fill Prediction using ...
Aug 18, 2022 · This study presents a computational fluid dynamics (CFD) model with conjugate heat transfer that is used to predict a liquid hydrogen tank chill and no-vent fill ground test conducted at Lewis Research Center (now Glenn Research Center) in 1991.
liquid hydrogen storage tank via an internal heat exchanger • Remove energy directly from the liquid to control bulk fluid • Enables Full Control Storage, including Zero Boil-Off, Densification, and Liquefaction • NASA and DoE funded small scale LH 2 …
NASA/TP—2013–217482 Large-Scale Liquid Hydrogen Tank Rapid Chill and Fill Testing for the Advanced Shuttle Upper Stage Concept R.H. Flachbart (retired), A. Hedayat, K.A. Holt, J. Sims, and E.F. Johnson Marshall Space Flight Center, Huntsville, Alabama L.J. Hastings Alpha Technology Inc., Huntsville, Alabama T. Lak (retired)
Liquid Hydrogen Filling Operations Resume – Artemis - NASA …
Sep 21, 2022 · Teams have resumed the flow of liquid hydrogen into the core stage after warming up the quick disconnect, or interface where the fuel feed line connects to the rocket, to reseat the connection as part of their troubleshooting plan to fast fill the propellant.
Helium Conservation by Diffusion Limited Purging of Liquid Hydrogen ...
Dec 12, 2024 · The NASA Engineering and Safety Center (NESC) has developed an analytical model that predicts diffusion between two gases during piston purging of liquid hydrogen (LH2) tanks.
Liquid Hydrogen may be Fuel of the Future - NASA
Dec 14, 2016 · Propellant densification, or cooling a liquid below its normal boiling point to increase the storage density, was the most challenging objective. The new system performed flawlessly, transforming the liquid hydrogen into the world’s largest volume of hydrogen slush at minus 435 degrees Fahrenheit.
Core Stage Liquid Hydrogen in Slow Fill, Liquid Oxygen in Fast Fill
Sep 3, 2022 · Engineers have started loading super cold liquid hydrogen into the Space Launch System rocket’s core stage and the fast fill phase for the core stage liquid oxygen tank also has started. The countdown clock, which was in a 2.5 hour built in hold, has resumed.
Zero-Boil-Off Tank Experiments to Enable Long-Duration Space ...
Mar 12, 2024 · An assessment of one nuclear propulsion concept for Mars transport estimated that the passive boil-off losses for a large liquid hydrogen tank carrying 38 tons of fuel for a three-year mission to Mars would be approximately 16 tons/year. The proposed ZBO system would provide a 42% saving of propellant mass per year.
Filling of the annular space with an estimated 1.3 quadrillion individual bubbles is schedule to take place in August 2021, followed by tank commissioning in early 2022. Fundamentally, Integrated Refrigeration and Storage is about control.