Triaxial Swirler Liquid Injector Development

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$50,000.00
Award Year:
2006
Program:
SBIR
Phase:
Phase II
Contract:
NNM06AA17C
Agency Tracking Number:
041885
Solicitation Year:
2004
Solicitation Topic Code:
X6.01
Solicitation Number:
n/a
Small Business Information
Sierra Engineering, Inc.
603 E. Robinson, Suite 7, Carson City, NV, 89701-4046
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
006620553
Principal Investigator:
Daniel Greisen
Principal Investigator
(916) 363-2996
dag@sierraengineering.com
Business Contact:
Margo Hornung
Business Official
(775) 885-8483
mah@sierraengineering.com
Research Institution:
n/a
Abstract
Sierra Engineering Inc. (Sierra) believes that the subject triaxial liquid propellant swirl injector has the potential to meet many of NASA's Earth-to-Orbit (ETO) propulsion systems goals. The triaxial swirl injector is ideally suited to a wide range of liquid oxidizers and fuels, including hydrogen and a wide range of hydrocarbons. It holds the potential of excellent high-frequency combustion stability characteristics and low injector production cost, similar to a pintle injector. Additionally, the triaxial swirl injector offers the potential for excellent injector and combustion chamber thermal compatibility and outstanding propellant atomization characteristics, both at levels far superior to a pintle injector. The triaxial injector concept is well suited to both main injector and preburner applications. The Phase I SBIR effort focused on understanding the influence design variables have on injector performance. We developed the mechanical design concept for a prototype injector. The proposed Phase II effort will complete the detailed design and analysis of the prototype injector. The test hardware will be fabricated and tested with several propellants. A preliminary design will be developed for a large-scale combustor.

* information listed above is at the time of submission.

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