Design Support and Analysis Tool for Pyrotechnically Actuated Valves

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX11CG13P
Agency Tracking Number: 104066
Amount: $99,984.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solicitation Year: 2010
Solicitation Topic Code: X2.01
Solicitation Number: N/A
Small Business Information
PA, Pipersville, PA, 18947-1020
DUNS: 929950012
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Ashvin Hosangadi
 Principal Investigator
 (215) 766-1520
Business Contact
 Katherine Young
Title: Business Official
Phone: (215) 766-1520
Research Institution
Pyrotechnically actuated valves are triggered on or off by firing an explosive charge that rapidly releases large amounts of high-pressure, gas. Pyrovalves are generally used for critical safety functions in almost all liquid and solid rocket systems and are designed to be fail-proof and provide extremely reliable actuation. However due to the lack of mature analysis tools, current design practices and safety analysis are heavily based on empiricism and are testing driven. The innovation proposed here is a comprehensive design and analysis tool that can characterize the transient performance of pyrotechnic actuators and provide a virtual test bed to assess performance and functional margin of these systems. The objective under this effort would be to develop a comprehensive three-dimensional transient tool that would simulate the gasÂ?dynamic interactions with combustion, and model thermal effects in the valve material. For more complex initiator designs where multiple initiators may be fired, the tool could be used to identify "skew" effects resulting from the offset between the initiator firings. Since pyrovalves are ubiquitous and necessary for any rocket system, the tools and technology developed here would be useful to a broad variety of programs of core interest to NASA including the constellation program.

* Information listed above is at the time of submission. *

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