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High Performance Thrusters for DACS Propulsion

Award Information

Department of Defense
Award ID:
Program Year/Program:
2013 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
19501 144TH AVE NE STE F500 WOODINVILLE, WA 98072-4423
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2013
Title: High Performance Thrusters for DACS Propulsion
Agency: DOD
Contract: HQ0147-13-C-7632
Award Amount: $995,306.00


Carbon-fiber reinforced silicon carbide matrix (SiC/Cf) composite was identified as the leading thruster construction material for SDACS for SM3-Block IIB. For SDACS propulsion applications, SiC/Cf composite surfaces must be hermetically sealed and SiC/Cf composite must be joined to each other and to refractory metal alloys for thruster construction. In Phase I we developed novel joining alloys and demonstrated joining techniques for SiC/Cf composites to each other and to C103, a refractory Nb alloy. The shear strengths of the SiC/Cf composite-C103 alloy joints (156 MPa) were almost 5 times higher than the highest value (34 MPa) reported in open literature. The Phase II project will expand on the success of Phase I work by (i) fine tuning braze alloy compositions, (ii) demonstrating the applicability of developed joining techniques to achieve high reliability SiC/Cf composite-(Mo-Re) alloy joints, (iii) designing joint geometries that are applicable for thruster construction by computer modeling, and (iv) providing a prototype SiC/Cf composite-C103 or Mo-Re alloy joint that is suitable for incorporating into an SDACS thruster for testing in collaboration with Aerojet-Sacramento.

Principal Investigator:

Ender Savrun
(425) 485-7272

Business Contact:

Canan Savrun
Vice President
(425) 485-7272
Small Business Information at Submission:

Sienna Technologies, Inc.
19501 144th Avenue NE Suite F-500 Woodinville, WA -

EIN/Tax ID: 911724179
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No