Scramjet Combustion Stability Behavior Modeling

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX10CA33C
Agency Tracking Number: 084122
Amount: $599,949.00
Phase: Phase II
Program: SBIR
Awards Year: 2010
Solicitation Year: 2008
Solicitation Topic Code: A2.02
Solicitation Number: N/A
Small Business Information
2212 Harton Blvd., Tullahoma, TN, 37388-5583
DUNS: 144158677
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Paul Gloyer
 Principal Investigator
 (931) 931-5108
Business Contact
 Paul Gloyer
Title: Business Official
Phone: (931) 931-5108
Research Institution
A recent breakthrough in combustion stability analysis (UCDS) offers the potential to predict the combustion stability of a scramjet. This capability is very important due to the extreme scramjet operational environment, which makes cut-and-try development approaches impractical. With UCDS, it will be possible to accurately predict the scramjet pressure oscillation amplitudes, along with critical parameters, including the unsteady wall heat flux. The UCDS tools were recently applied to the Ares I thrust oscillation issue in support of NASA's Thrust Oscillation Focus Team (TOFT). After validating the UCDS capabilities by analyzing the RSRM, GTL applied the tool to identify a relatively minor motor modification that should eliminate the organized motor oscillations. Building upon this validation, GTL took the first step towards extending UCDS to scramjets in the Phase I effort. While a variety of issues and challenges were uncovered during the effort, the effort confirmed that the UCDS framework is fully applicable to scramjets. However, the effort also revealed that the DCR scramjet is far more complicated and difficult to analyze than a typical rockets. In the Phase II effort, GTL proposes to address the key issues that were identified during the Phase I effort.

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

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