JASC Hyper-X Fuel Control Pintle Valve

JASC Hyper-X Fuel and Ignitor Control Valves with Electronic Control Unit

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JASC Hyper-X Fuel and Ignitor Control Valves Description
High speed motor driven pintle valve with electronic control for metering of high pressure gaseous hydrogen or silane. These valves form the heart of NASA’s Hyper-X Hypersonic Experimental Research Vehicle Fuel System. The valves are designed to accurately meter gaseous hydrogen (fuel) and a mixture of gaseous hydrogen and silane (a pyrophoric ignitor) to the engine’s combustor for the duration of the flight, and are considered the key elements of the vehicle’s propulsion system.

Design Features and Benefits
*Sealed Electronically Controlled Brushless DC Motor
*Rapid Response Time
*Accurate Fuel Metering
*Excellent Pressure Recovery throughout Operating Range
*Encapsulated and Brushless DC Motor and Screw Thread
*Meets or exceeds environmental requirements of HX-279 for shock, vibration, acceleration, pressure, temperature, and EMI

Construction Materials
7075-T73 Aluminum Alloy
A286 Stainless Steel
Be-Copper

Product Specifications
Fluid: GH2 (fuel) or 80%GH2/20%GSiH4 (ignitor)
Pressure: 3000 PSIA
Operating Temperature: 0°-160°F
Flow Rates: 0-.35 pps (H2), 0-.18 pps (H2/SiH4)
Full-Scale Response: 120 msec
Weight: 4.8 lbs.
Frequency Response: 10 Hz @ -45°
Hysteresis: <2.0% of FS
Threshold: <0.5% of Pt.
Accuracy: ±0.75% of Pt.
Shut-Off Leakage: <10–3 sccs He @ 1800 psid