Monopropellant Tank with Stiff-Plastic Separation Device (Diaphragm)
Flight-proven UDMH/NTO monopropellant tank (30.8 dm³, 5.2 kg) for Phobos Sample Return Mission return spacecraft propulsion.
Technical specifications
- Purpose
- Propellant storage and feed to liquid propellant thrusters (Phobos Sample Return Mission return spacecraft)
- Year of release
- 2011
- Flight qualification
- Letter O — flight use
- Customization
- Can be adapted to customer requirements
- Propellant
- UDMH, NTO
- Operating pressure
- Not over 1.67 MPa
- Mass
- 5.2 kg
- Volume of propellant compartment
- 30.8 dm³
- Unused propellant residue after expulsion
- Not over 0.65 dm³
- Allowable helium leak (leakage test)
- Not over 1 × 10⁻³ l·μm He/s
- Allowable leak rate (service life)
- Not over 2.33 × 10⁻² l·μm He/s
- Cleanliness
- GOST 17216, Class 5
- Guaranteed service life
- 15 years
- TRL
- 9 (flight-proven)
About
This monopropellant tank with a stiff-plastic separation diaphragm is designed for the Phobos Sample Return Mission (international program) return spacecraft propulsion system, providing UDMH/NTO propellant storage and feed to liquid propellant thrusters. It holds 30.8 dm³ at up to 1.67 MPa, with a residual propellant expulsion of not more than 0.65 dm³. It holds flight qualification status (Letter ‘O’, flight use) and a 15-year guaranteed service life, released in 2011.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.
