Apogee Engine Valve
Nammo
The Apogee Engine Valve is a single-stage, redundant solenoid coil thruster flow control device specifically designed for propulsion system applications, compatible with various chemical and green propellants.
Technical specifications
- Typical Operating Media
- Typical propulsion fluids
- Maximum Expected Operating Pressure
- 319 psia MEOP
- Surge Pressure
- 2,031 psi for 0.2 seconds
- Proof Pressure
- 609 psi
- Burst Pressure
- 1,189 psi
- Pressure Drop - Flow Rate
- < 29 psi
- Internal Leakage
- 8 x 10-4 scc/s GHe
- External Leakage
- 1 x 10-6 scc/s GHe
- Operating Temperatures
- -20°F to 216°F in qualification
- Non-Operating Temperatures
- -65°F to 266°F
- Response Time
- <35 msec closing response
- Vibration
- 37.68 gRMS
- Shock
- 1.5kHz -10kHz
- Electrical Interface
- The interfaces can be customised based on the customer needs.
- Operating Cycle Life
- 8,000 cycles
- Filter Rating
- 25 µm absolute
- Wetted Materials
- AISI316L, AISI304L, AISI430, PTFE
- Hardware Mass
- Excluding flying leads
- Envelope
- With straight weld tube.
- Pull-in Voltage
- 22 Vdc
- Input Voltage Range
- 18 Vdc to 27 Vdc
- Coil Power
- Per coil
- Fluidic Interface
- The interfaces can be customised based on the customer needs.
- Structural Interface
- The interfaces can be customised based on the customer needs.
- Internal Heater
- 2 Watts at 35 Vdc
- Technology Readiness Level
- On RCS on SS-520 launcher
About
The Apogee Engine Valve is a single stage, redundant solenoid coil thruster flow control device. It is a non-sliding fit valve, specifically designed for propulsion system applications. Nammo Space offers a range of solenoid valves for propulsion system and thruster applications, with the SVS06 range of flow control valves being compatible with a wide range of propellants used in chemical and green propulsion. The valve is normally closed, non-sliding fit, with dual or single coil designs, and features a fully welded construction ensuring a zero external leak rate. The inlet fitting is 3/8” Tube or AS4395 (straight or 90°), and the outlet flange incorporates the interface for the thruster. The solenoid actuator opens the valve for steady state flow and can also be used in pulse mode. Redundant coils are fitted for improved reliability. The inlet includes a 25µm particle filter. The outlet flange incorporates the interface with the thruster or other equipment, typically a bolted flange interface. The solenoid coils are located in a replaceable sleeve, mounted on the valve core. Various power and voltage options are available, and an internal heater can be supplied as an option. This thruster valve has been developed with ESA and Nammo Westcott, and can be used on engines like LEROS 1c and LEROS 4. It has also been used in a launcher cold gas roll control system, and another version is used on the H2O2 Roll and Attitude Control System on the Vega AVUM+ stage. There are 4 versions of this flow control valve.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.