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Flame Holder Designs for Improved Augmentor Stability

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-07-C-0219
Agency Tracking Number: N071-040-0815
Amount: $149,705.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N07-040
Solicitation Number: 2007.1
Timeline
Solicitation Year: 2007
Award Year: 2007
Award Start Date (Proposal Award Date): 2007-03-16
Award End Date (Contract End Date): 2007-09-16
Small Business Information
P.O. Box 71
Hanover, NH 03755
United States
DUNS: 072021041
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Darin Knaus
 Principal Investigator
 (603) 643-3800
 dak@creare.com
Business Contact
 James Barry
Title: President
Phone: (603) 643-3800
Email: contractsmgr@creare.com
Research Institution
N/A
Abstract

Augmentor stability is critical to the operational performance of military aircraft that rely on gas turbine propulsion. Compared to early augmentor designs, the distance between the point of fuel injection and the flame holder has become progressively shorter in modern augmentors. These so called close-coupled designs help avoid autoignition issues associated with higher augmentor inlet temperatures. A negative aspect of such close-coupled designs is that the fuel is not optimally mixed in the flame holding region, leading to static and dynamic stability issues. Creare and our partners propose a new close-coupled augmentor flame holder design that will greatly extend stability margins, especially in the high altitude, low Mach (Ma) number part of the flight envelope where stability issues are of greatest concern. During Phase I we will demonstrate our flame holder concept in an augmentor test facility. We will also conduct numerical analysis to predict the fuel distribution in our novel design and the anticipated improvement in static stability. Based on the experimental and analytical results, we will develop optimized designs for further development and testing during Phase II.

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

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