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Reusable Transpiration-Cooled Hydrocarbon Propellant Rocket Engine

Award Information

Agency:
Department of Defense
Branch:
Office of the Secretary of Defense
Award ID:
66804
Program Year/Program:
2003 / SBIR
Agency Tracking Number:
O031-0170
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Ultramet
12173 Montague Street Pacoima, CA -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2003
Title: Reusable Transpiration-Cooled Hydrocarbon Propellant Rocket Engine
Agency / Branch: DOD / OSD
Contract: F04611-03-M-3020
Award Amount: $100,000.00
 

Abstract:

Large liquid rocket engine combustion chambers suffer from two key constraints: they incorporate relatively low temperature capability alloys to minimize cost, and require active cooling to prevent excessively high temperatures from weakening the chambermaterials such that they can no longer sustain operating loads. Additionally, operation of engines with hydrocarbon propellants has the added problem of coolant channel coking. Although the high propellant density and high thrust-to weight ratioassociated with hydrocarbon propellants make them very attractive for boost engines, reusable designs must be developed for long-term economic viability. Actively cooled chambers are fabricated either as tube-wall structures or by machining grooves intothe walls. Both methods adversely impact cost, complexity, part count, reliability, and performance. In currently ongoing work, Ultramet and Boeing/Rocketdyne have demonstrated the performance and manufacturing feasibility of an innovative,transpiration-cooled oxygen/hydrogen (O2/H2) engine based on the use of Ultramet's highly porous and structural open-cell foam materials. Although pressure, flow rate, and coolant wall permeability requirements are quite different for hydrocarbon-fueledengines compared to O2/H2 engines, the potential exists to develop an innovative material and design approach for practical use of high-efficiency hydrocarbon propellants in a transpiration-cooled design without coking. In this project, Ultramet proposesto team with Boeing/Rocketdyne to demonstrate the feasibility of a transpiration-cooled hydrocarbon-fueled engine based on the use of advanced structural foam materials. This project will advantageously leverage previous hydrocarbon engine design workperformed at Rocketdyne using more conventional materials and previous engine materials development performed at Ultramet for O2/H2 engines. The use of open-cell foam materials to cool rocket engine combustion chambers by transpiration would substantiallyreduce part count, cost, and mass and increase performance over current regeneratively cooled engines. This design would be further exploited through use with high-efficiency hydrocarbon propellants. The same technology will also find substantialapplication in commercial launch systems as well as advanced heat exchangers, which will benefit from the high heat transfer characteristics and high specific strength of open-cell foams.

Principal Investigator:

Brian E. Williams
Senior Project Engineer
8188990236
brian.williams@ultramet.com

Business Contact:

Craig N. Ward
Engineering Administrativ
8188990236
craig.ward@ultramet.com
Small Business Information at Submission:

ULTRAMET
12173 Montague Street Pacoima, CA 91331

EIN/Tax ID: 952662293
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No