Apogee Engine Valve

Apogee Engine Valve

ESA Vega

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 has a range of solenoid valves for propulsion system and thruster applications.  The SVS06 range of flow control valves for propulsion applications are compatible with a wide range of propellants used in chemical and green propulsion.

The valve is a normally closed, non-sliding fit, with dual or single coil designs.  The valve is a fully welded construction.  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 is used to open the valve for steady state flow, and can also be used in pulse mode. The valve is fitted with redundant coils for improved reliability.

The valve is a fully welded structure, ensuring a zero external leak rate.  The inlet includes a 25µm particle filter.  The outlet flange incorporates the interface with the thruster or other equipment. This is typically a bolted flange interface.

The solenoid coils are located in a replaceable sleeve, mounted on the valve core.  There are a variety of power and voltage options for the valve.  An internal heater can be supplied as an option for this valve.

Performance Characteristics

Typical Operating Media

Maximum Expected Operating Pressure

Surge Pressure

Proof Pressure

Burst Pressure

Pressure Drop - Flow Rate

Internal Leakage

8 x 10-4 scc/s GHe

External Leakage

1 x 10-6 scc/s GHe

Operating Temperatures

Non-Operating Temperatures

Response Time

Vibration

37.68 gRMS

Shock

Electrical Interface

Operating Cycle Life

8,000 cycles

Filter Rating

25 µm absolute

Wetted Materials

AISI316L, AISI304L, AISI430, PTFE

Hardware Mass

Envelope

Pull-in Voltage

22 Vdc

Input Voltage Range

18 Vdc to 27 Vdc

Coil Power

Fluidic Interface

Structural Interface

Internal Heater

2 Watts at 35 Vdc

Technology Readiness Level

Note that there are 4 versions of this flow control valve, please see the datasheet on this page for further details.

 

Status

This thruster valve has been developed with ESA and Nammo Westcott, for example it can be use on the LEROS 1c and LEROS 4 engines.  The valve has also been used in a launcher cold gas roll control system.  Another version of this valve is being used on the H2O2 Roll and Attitude Control System on the Vega AVUM+ stage.

 

NAMMO IRELAND

ENGINEERING

  • Dedicated, skilled space engineering team
  • Design and qualification of fluid control devices for spacecraft and launcher applications
  • Structural hardware design for production
  • Design for survivability in extreme launcher applications
  • Design knowledge and techniques for Additive Manufactured hardware

PRODUCTION

  • CNC machine tools, including 5-axis
  • Electro Discharge Wire machine tools
  • Spherical bearing production with Everlube 811 bearing lubrication
  • Prototyping for development and production hardware
  • Precision machining of specialist and exotic alloys for rocket engine applications

CLEANROOM and TESTING

  • ISO Class 8 environment, with Class 5 laminar flow booths
  • Water flow test
  • Thermal vacuum cycling
  • Vacuum testing
  • Cleanliness measurement

QUALITY and INSPECTION

  • Certified to AS9100
  • Fully equipped metrology department
  • CMM and optical measuring equipment
  • Complete traceability of material and inspection records
  • Trained DPRV personnel

Contact

Derek Harris

Business Development Manager

Post
15 Northwest Business Park, Ballycoolin, Dublin 15, D15FF6K, Ireland

Phone
+353 87 211 9010

Location

Nammo Ireland

Address
15 Northwest Business Park,
Ballycoolen, Dublin,
Ireland