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SLM Produced Hermetically Sealed Isolation ValveMarshall Space Flight Center (MSFC) has developed a valve concept to replace traditional pyrotechnic driven isolation valves. This paper will describe the valve design and development process. The valve design uses a stem/wedge to support a disk inside the valve. That disk hermetically seals the pressurized fluids. A release mechanism holds the stem/wedge and a large spring in place. When required to open, a solenoid is energized and pulls the release mechanism allowing the spring to pull the stem/wedge away from the disk. Now the disk is unsupported and the pressure ruptures the disk allowing flow to the outlet of the valve. This paper will provide details of this design, describe the development testing, and show the results from the valve level tests performed. Also, a trade study is presented to show the advantages of this design to a conventional pyrotechnic based valve.
Document ID
20140010920
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Richard, James A. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 22, 2014
Publication Date
May 14, 2014
Subject Category
Mechanical Engineering
Spacecraft Design, Testing And Performance
Report/Patent Number
M14-3446
Meeting Information
Meeting: Aerospace Mechanisms Symposium
Location: Baltimore, MD
Country: United States
Start Date: May 14, 2014
End Date: May 16, 2014
Sponsors: NASA Headquarters, Lockheed Martin Space Mission Systems
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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