High Performance Thrusters for DACS Propulsion

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: HQ0147-13-C-7632
Agency Tracking Number: B2-1941
Amount: $995,306.00
Phase: Phase II
Program: SBIR
Awards Year: 2013
Solitcitation Year: 2011
Solitcitation Topic Code: MDA11-021
Solitcitation Number: 2011.2
Small Business Information
Sienna Technologies, Inc.
19501 144th Avenue NE, Suite F-500, Woodinville, WA, -
Duns: 015577190
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Ender Savrun
 President
 (425) 485-7272
 ender.savrun@siennatech.com
Business Contact
 Canan Savrun
Title: Vice President
Phone: (425) 485-7272
Email: c.savrun@siennatech.com
Research Institution
 Stub
Abstract
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.

* information listed above is at the time of submission.

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