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Design and Analysis of Metal-to-Composite Nozzle Extension Joints

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2011 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Materials Research & Design
300 East Swedesford Road Wayne, PA 19087-1858
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2011
Title: Design and Analysis of Metal-to-Composite Nozzle Extension Joints
Agency: NASA
Contract: NNX11CH35P
Award Amount: $99,989.00


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.

Principal Investigator:

Craig Iwano
Principal Investigator

Business Contact:

Brian J. Sullivan
Small Business Information at Submission:

Materials Research and Design
300 E. Swedesford Rd Wayne, PA -

EIN/Tax ID: 232839876
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No