NASA SBIR 2010 Solicitation


PROPOSAL NUMBER: 10-1 S3.04-9415
SUBTOPIC TITLE: Propulsion Systems
PROPOSAL TITLE: Joining Silicon Carbide Components for Space Propulsion

SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
Sienna Technologies, Inc.
19501 144th Avenue NE, Suite F-500
Woodinville, WA 98072 - 4423
(425) 485-7272

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Ender Savrun
19501 144th Ave NE Suite F-500
Woodinville, WA 98072 - 4423
(425) 485-7272

Estimated Technology Readiness Level (TRL) at beginning and end of contract:
Begin: 2
End: 6

TECHNICAL ABSTRACT (Limit 2000 characters, approximately 200 words)
This SBIR Phase I program will identify the joining materials and demonstrate the processes that are suited for construction of advanced ceramic matrix composite (CMC) thrusters for advanced monopropellants and bipropellants for space propulsion. We will join CMCs to each other and to superalloys by brazing. In Phase I, we will experimentally evaluate and identify suitable active metal braze alloys through wetting experiments, brazing, microstructural examination, and shear strength measurements both at room temperature and 1100ÂșC. We will also demonstrate the feasibility of using stiff and compliant interlayers to increase the joint strength by reducing the thermal residual stresses in the joints. The Phase II project will demonstrate a working CMC HAN thruster using the joining technology developed in Phase I.

POTENTIAL NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
Availability of low-cost CMC thrusters will advance HAN-based propellant system development, and will provide significant cost savings as well as fast delivery to accelerate development of next generation chemical propulsion systems.
CMC thrusters or combustion chambers are needed for non-toxic engine technologies, including HAN-based propulsion systems, for sample return missions under the Science Mission Directorate (SMD) and for replacement of operational NTO/MMH engines in other in space propulsion applications.

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
CMC thrusters will also find applications in non-toxic propulsion systems to replace hydrazine-based systems for U.S. commercial satellite payloads, launch vehicle upper stages for launch service providers, and space vehicles for space tourism companies.
The developed joining technology will also find applications in ceramic heat exchangers, pump components, and thermonuclear reactor components.

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)
Maneuvering/Stationkeeping/Attitude Control Devices

Form Generated on 09-03-10 12:12