Vapor Cooled Structure MLI: Efficient Vapor Cooling of Structural Elements, Phase II

Metadata Updated: February 28, 2019

Human exploration requires advances in propulsion for transport to Earth orbit, the moon, Mars and beyond. New technologies are needed for advanced in-space propulsion systems to support exploration, reduce travel time, reduce acquisition costs and reduce operational costs. The goal is a breakthrough in cost and reliability for a wide range of payload sizes and types supporting future orbital flight vehicles. Lower cost and reliable space access will provide significant benefits to civil space (human and robotic exploration beyond Earth as well as Earth science), to commercial industry, to educational institutions, for support to the International Space Station National Laboratory, and to national security. NASA?s Technology Roadmaps call Zero Boil Off storage of cryogenic propellants for long duration missions? the #2 ranked technical challenge for future NASA missions, and new technologies are necessary for improved cryogenic propellant storage and transfer to support NASA's exploration goals. Heat leak through tank mounts such as struts and skirts is an increasingly large part of the total heat flow into modern, well insulated tanks. Specifically, NASA has a high priority for simple mass efficient techniques for vapor cooling of structural skirts (aluminum, stainless, or composites) on large upper stages containing liquid hydrogen and liquid methane (can include hydrogen catalyst). Improved cryogenic insulation that can incorporate vapor cooling to reduce the heat flux through struts and skirts would benefit cryogenic fluid management, and help towards achieving zero boil off.Vapor Cooled Structure MLI (VCSMLI) is a novel system that uses discrete spacers to create a sealed vapor layer within IMLI for lightweight, efficient vapor cooling of tank skirts. In the Phase I program, VCSMLI was modeled, designed, fabricated, installed on a tank skirt and its thermal performance measured. VCSMLI provided a 41% reduction in total system heat flux reaching TRL 4.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date August 1, 2018
Metadata Updated Date February 28, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date February 28, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_89436
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id c333ae8b-d19e-4ac1-b536-e4c97f72b83b
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2018-04-01
Homepage URL
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash f602abbd4ac6565eb4f383f4632cf9e0aac56f52
Source Schema Version 1.1

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