NASA SBIR 2018-I Solicitation

Proposal Summary

 18-1- A1.10-1123
 Hypersonic Seal Technology Development
 Ceramic Springs
SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
TDA Research, Inc.
12345 West 52nd Avenue
Wheat Ridge , CO 80033-1916
(303) 422-7819

Principal Investigator (Name, E-mail, Mail Address, City/State/Zip, Phone)
Dr. Michael D. Diener Ph.D.
12345 West 52nd Avenue Wheat Ridge, CO 80033 - 1916
(303) 940-2314

Business Official (Name, E-mail, Mail Address, City/State/Zip, Phone)
Mr. John Wright
12345 West 52nd Avenue Wheat Ridge, CO 80033 - 1916
(303) 940-2300
Estimated Technology Readiness Level (TRL) :
Begin: 1
End: 3
Technical Abstract

Hypersonic aircraft, especially reusable hypersonic aircraft, require advancements in high temperature materials because of the extreme temperatures resulting from frictional heating. One aspect of this problem is making seals that can function through a very large temperature range, perhaps up to 1000 C or higher. Metallic springs essentially lose their ability to function at 600 C or below. Ceramic springs, principally made of silicon nitride, are capable of functioning throughout that temperature range, but lack the strength required for most applications. They also undergo very limited deformation before failure. TDA will improve the feedstocks and modify the existing process for manufacturing ceramic compression springs. Through improvements to the grain structure, the resulting springs will overcome their previous limitations.

Potential NASA Applications

Ceramic compression springs are primarily being developed so that high temperatures seals in the (sc)ramjet engines can be preloaded. However, the high temperature – capable springs could also solve problems in the control surface and/or leading edge thermal protection system. These needs are particularly acute for re-usable hypersonic transports, including the descendants fo the National Aerospace Plane.

Potential Non-NASA Applications

There will be many uses for these high temperatures outside of NASA. Most obviously, certain (single-use) air-breathing hypersonic weapon systems have the same needs as NASA. However, the chemical resistance and high temperature stability of ceramic springs will allownew sealing options in a wide variety of industrial processes. Ceramic springs that allow seals to be made between smaller, simpler pieces of tooling can cut manufacturing costs by obviating the need for larger more complex tooling.

Form Generated on 05/25/2018 11:27:17