NASA SBIR 2010 Solicitation


PROPOSAL NUMBER: 10-1 X2.01-8919
SUBTOPIC TITLE: Earth-to-Orbit Propulsion
PROPOSAL TITLE: Design and Analysis of Metal-to-Composite Nozzle Extension Joints

SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
Materials Research and Design
300 E. Swedesford Road
Wayne, PA 19087 - 1858
(610) 964-9000

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Craig Iwano
300 E. Swedesford Road
Wayne, PA 19087 - 1858
(610) 964-9000 Extension :119

Estimated Technology Readiness Level (TRL) at beginning and end of contract:
Begin: 2
End: 3

TECHNICAL ABSTRACT (Limit 2000 characters, approximately 200 words)
As the operational demands of liquid rocket engines increases, so too does the need for improved design and manufacturing methods for metal-to-composite nozzle extensions. The state of the art utilizes non-domestic composite materials for nozzle extensions. Although this solution does offer weight savings and increased performance, there is an increase in cost and the addition of Export regulations. Within this effort, Materials Research & Design (MR&D) is proposing an analytical study, coupled with subcomponent fabrication and testing, that would result in a design for a domestically available C-C nozzle extension and metallic-to-composite joint for the J-2X. The proposed study would investigate various mechanical attachment methods, such as mechanical fasteners and adhesives for both the CMC-to-metallic joint and the CMC-to-CMC joint. Additional aspects of the trade study would investigate various flange shapes and materials in order to reduce the critical stresses in the region.

POTENTIAL NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
Nozzle extensions are utilized on many rocket engines that require increased thrust and specific impulse. For large scale engines, there is currently no domestically available technology capable of meeting the operational needs. The technology developed here will have a direct impact on the design and manufacturing of metal-to-composite nozzle joints for all future propulsion system designs by offering a domestically available alternative to the non-domestic state-of-the-art. Although the proposed effort will focus on the J-2X engine design and loads, the developed technology could also be applied to the RL 10B-2 cryogenic application since the CTE issues are present in both cases.

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
In addition to liquid rocket engine nozzle extensions, the technology developed within this effort would benefit any application that requires a metal-to-composite joint that operates under extreme thermal conditions. Letters of support from ATK and Pratt & Whitney Rocketdyne (Included in Part 12 of the proposal) support the application of the proposed technology for future propulsion system designs.

TECHNOLOGY TAXONOMY MAPPING (NASA's technology taxonomy has been developed by the SBIR-STTR program to disseminate awareness of proposed and awarded R/R&D in the agency. It is a listing of over 100 technologies, sorted into broad categories, of interest to NASA.)
Joining (Adhesion, Welding)
Models & Simulations (see also Testing & Evaluation)
Nondestructive Evaluation (NDE; NDT)
Simulation & Modeling

Form Generated on 09-03-10 12:12