VACCO Thruster Valves
VACCO Industries
Monopropellant, bipropellant and cold-gas thruster valves for attitude control, reaction control and orbital maneuvering, including the Cold Gas Triad Thruster.
Typed specifications24 values
Discloses 6 of 10 fields engineers filter by in this category (category median 3).
- Propulsion family
- cold-gas datasheet p.1
- Mass
- 376.48 g printed as lbm · datasheet p.1
- Thrust
- 8 896.44 mN at 250 psia GN2 Inlet · datasheet p.1 8 896.44 mN at 260 psia GN2
- Propellant
- GN2 datasheet p.1 nitrogen GN2
- Supply voltage
- 12–21 V Operating Voltage · datasheet p.1
- Power consumption
- 20 W at 17 VDC · datasheet p.1
- Operating temperature
- -20–150 °C datasheet p.1
- Thruster technology
- cold gas datasheet p.1
- Propellant mass flow
- 0.027 mg/s GN2 @ 235 psia inlet, 0.01 psia outlet · datasheet p.1
- Number of starts or pulses
- 150 000 cycle life · datasheet p.1 150 000 Operating Cycles
- Feed / tank pressure
- 17.93 bar nom. · operating pressure · datasheet p.1 57.92 bar Burst Pressure | 17.93 bar Operating Pressure | 43.44 bar Proof Pressure
- Power at thrust
- 20 W 17 VDC · datasheet p.1
- Time to thrust
- 4 s Closing @ 230 psig · datasheet p.1 7 s Opening @ 16.8 VDC, 230 psig | 7 s valve opening response @ 16.8 VDC, 230 psig
- Random vibration
- 6.28 g RMS datasheet p.1
- Flight heritage
- Space Shuttle Manned Maneuvering Unit datasheet p.1
- Ignition or start
- none (cold gas) datasheet p.1
Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.
As published by the supplier19 lines, in the manufacturer's own wording
- Valve types
- Monopropellant, bipropellant, cold-gas thruster valves
- Cold gas triad thruster
- 3 x 2 lbf thrusters on a common X/Y/Z manifold block
- Design feature
- Low-friction suspended-armature design
- Flight heritage
- Space Shuttle Manned Maneuvering Unit (MMU) — 4 triad assemblies per unit
- Operating Pressure
- 260 psia
- Proof Pressure
- 630 psia
- Burst Pressure
- 840 psia
- Thrust
- 2.0 lbf
- Internal Leakage
- 3.6 scc/hr GN2
- External Leakage
- 1.08 scc/hr GN2
- Vibration
- 6.28 Grms
- Lifetime
- 150,000 cycles
- Response Time Opening
- 7 msec
- Response Time Closing
- 4 msec
- Flow
- 0.0267 lbm/sec GN2
- Power
- 20 watts
- Operating Voltage
- 12 – 21 VDC
- Pull-In Voltage
- 10 VDC max
- Drop Out Voltage
- 1.0 VDC min
About
VACCO designs and manufactures thruster valves supporting attitude control, reaction control, and orbital maneuvering subsystems (OMS). The line includes monopropellant valves, bipropellant valves, and cold-gas propulsion systems built to meet the space industry’s demand for high cycle life, tight leakage, and quick response, using VACCO’s low-friction suspended-armature design proven on numerous flight programs. The 2-lbf Cold Gas Triad Thruster is an assembly of three identical 2-lbf thrusters mounted on a common manifold block along the X, Y and Z axes. Four of VACCO’s man-rated triad thruster assemblies were used on each Space Shuttle Manned Maneuvering Unit (MMU).
Documentation
- cold_gas_thrusters.pdf PDF source: www.vacco.com ↗
- liquid_propellant_thrusters.pdf PDF source: www.vacco.com ↗
Need the full ICD, test reports or a specific revision? Ask the supplier directly.