Satellite > Orbit Determination and Control > Propulsion system valve > Propulsion System Shape Memory Alloy Valve (SMAV)
Summary
The Rafael Ltd Shape Propulsion System Shape Memory Alloy Valve - SMAV is a valve operated by SMA actuator based on smart materials. The fluid media compatibility includes Xe, Kr, Ar, GN2, GHe, De-Ionized Water and IPA.
The SMAV features a single-core cartridge heater which can be tested pre-flight without altering the functionality of the valve and ensuring reliability.
The valve being based on smart materials is a hermetic device as its inlet is sealed using a nipple sheard by the SMA actuator.
This inert solution is designed to be internal and external leakage-proof. The lifetime for storage is 7 years, for pre-Activation (pressurized) is 4 years and for flight (post-activation) is 15 years. The inlet and outlet interface are MS 33656G-4 or 0.25'' tubes
Key features
- SMA actuator
- Based on smart materials
- Single-core cartridge heater
- Nipple sheard by the SMA actuator for inlet sealing
- Internal and external leakage-proof
- Lifetime:
- storage - 7 years,
- pre-Activation (pressurized) - 4 years
- flight (post-activation) - 15 years
- Inlet and outlet interface: MS 33656G-4 or 0.25'' tubes
Flight heritage
The system has achieved flight heritage with OFEQ, PRISMA (OHB-I).
Manufacturing
Production, testing and inspection facilities:
- Clean rooms (more than 1000 m²)
- Clean Room Component Level
- Clean Room PS-AIT
- Metal Technology Center
- CAD/CAM, CNC machining
- Electro-Erosion
- Forming, hydro-spinning, deep hot and cold-drawing
- Surface treatment, heat treatment
- Welding (EBW, GTAW, GMAW, plasma), brazing
- Cutting, bending and flaring of titanium tubes
- Hot Firing test facility which includes 5 Firing Chambers
- Chambers for 1÷10 N class thrusters
- Chamber for high-trust thrusters and/or system tests
- Chamber for Hall effect thruster & EP system firing
- Ground support equipment for testing components and systems
- GSE propulsion systems electrical tester
Testing & qualification
Rafael Quality system is certified to ISO 9001:2015/AS9100D. The quality policy of Rafael is derived from the common space quality standards, especially from ESA. Rafael ensures 100% inspection on the space products from the raw materials used to final integration. ERP integrated quality system enables full traceability from raw material to the delivered item.
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Last updated: 2024-02-05
Propulsion System Shape Memory Alloy Valve (SMAV)
Specs
de-ionized water
isopropyl alcohol
GN2
GHe
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