High Performance Thrusters for DACS Propulsion

Award Information
Agency:
Department of Defense
Branch:
Missile Defense Agency
Amount:
$995,306.00
Award Year:
2013
Program:
SBIR
Phase:
Phase II
Contract:
HQ0147-13-C-7632
Agency Tracking Number:
B2-1941
Solicitation Year:
2011
Solicitation Topic Code:
MDA11-021
Solicitation Number:
2011.2
Small Business Information
Sienna Technologies, Inc.
19501 144th Avenue NE, Suite F-500, Woodinville, WA, -
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
015577190
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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