USA flag logo/image

An Official Website of the United States Government

Scramjet Combustion Stability Behavior Modeling

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2009 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Gloyer-Taylor Laboratories LLC
2212 Harton Blvd Tullahoma, TN -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2009
Title: Scramjet Combustion Stability Behavior Modeling
Agency: NASA
Contract: NNX09CC82P
Award Amount: $99,685.00


A recent breakthrough in combustion stability analysis (UCDS) offers the means to accurately 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 is now 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). This effort included the analysis of the Shuttle four segment solid rocket motor (RSRM) to validate the capabilities of UCDS. After analyzing the new five segment (RSRMV) motor being developed for Ares I, GTL used the UCDS insight to identify a relatively minor motor modification that will eliminate the organized motor oscillations. With this validation of the capabilities and effectiveness of UCDS, GTL proposes to extend the application of UCDS by applying it to examine the stability characteristics of a representative scramjet. In addition to predicting the amplitudes of the scramjet pressure oscillations, a UCDS sensitivity analysis will be used to identify critical design parameters and establish development guidelines.

Principal Investigator:

Paul Gloyer
Principal Investigator

Business Contact:

Paul Gloyer
Business Official
Small Business Information at Submission:

Gloyer-Taylor Laboratories, LLC
2212 Harton Blvd. Tullahoma, MS 37388

EIN/Tax ID: 010831191
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No