Low-Cost Refractory Metal-Lined Graphite and Carbon/Carbon Components for Advanced SDACS and LDACS, Phase II

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: HQ0147-11-C-7749
Agency Tracking Number: B2-1806
Amount: $1,379,078.00
Phase: Phase II
Program: SBIR
Awards Year: 2011
Solicitation Year: 2009
Solicitation Topic Code: MDA09-003
Solicitation Number: 2009.3
Small Business Information
Ultramet
12173 Montague Street, Pacoima, CA, 91331-2210
DUNS: 052405867
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Victor Arrieta
 Senior Research Engineer
 (818) 899-0236
 victor.arrieta@ultramet.com
Business Contact
 Craig Ward
Title: Engineering Administrativ
Phone: (818) 899-0236
Email: craig.ward@ultramet.com
Research Institution
 Stub
Abstract
Rhenium hot gas path components are used extensively in the solid divert and attitude control system (SDACS) of the Standard Missile-3 (SM-3) Block 1A Aegis ballistic missile defense system, on which Ultramet is a key subcontractor. The mechanical, thermal, and chemical performance of rhenium is unmatched. However, a need exists to reduce the cost and weight of rhenium-based structures for advanced DACS. In previous and current work, Ultramet has demonstrated the potential of fabricating rhenium-lined low-density graphite and carbon/carbon components, in combination with a carbon diffusion barrier interlayer to prevent loss of rhenium ductility and damage to the carbon-based support structure. This combination of materials will allow the benefits of flight-qualified rhenium to be retained at substantially reduced weight and cost. Rhenium offers high toughness and thermal and mechanical shock resistance that ceramic coatings cannot provide, as well as gas impermeability that cannot be achieved with ceramic matrix composites. In Phase I, Ultramet demonstrated the initial feasibility of a rhenium-lined graphite poppet for a long-duration hot gas valve being developed by Valley Tech Systems for Aerojet"s SM-3 Block 2B SDACS. In Phase II, application of the technology will be expanded beyond SDACS valve components to also include thrusters for Aerojet"s SM-3 Block 2B liquid DACS (LDACS). LDACS will require rhenium thrusters that are lined with iridium, and Ultramet is the only manufacturer of flight-qualified and proven iridium/rhenium thrusters. Design and analysis will take advantage of Ultramet"s extensive experience in manufacturing flight components from rhenium for SM-3 Block 1A and from iridium/rhenium for commercial satellite liquid propulsion systems. Performance will be established through hot-fire testing at Valley Tech Systems and Aerojet.

* information listed above is at the time of submission.

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