Bipropellant Tank with Stiff-Plastic Separation Devices (Diaphragms)
Flight-proven UDMH/NTO bipropellant tank (40 dm³, 15 kg) for communication satellite KDU 11D414HC propulsion systems.
Technical specifications
- Purpose
- Propellant storage and feed to liquid propellant thrusters (KDU 11D414HC comsat propulsion system)
- Flight qualification
- Letter O — flight use
- Customization
- Can be adapted to customer requirements
- Propellants
- UDMH / NTO
- Operating pressure
- Not over 2.94 MPa
- Mass
- 15.5 kg
- Total volume of propellant compartments
- 40 dm³
- Unused propellant residue after expulsion
- Not over 2.2 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 bipropellant tank with stiff-plastic separation diaphragms provides propellant storage and feed to liquid propellant thrusters in the KDU 11D414HC propulsion system for communication satellites. It stores UDMH/NTO bipropellant at up to 2.94 MPa in two compartments totalling 40 dm³. The stiff-plastic diaphragms physically separate propellant from the pressurant, minimizing residual propellant. It holds flight qualification status (Letter ‘O’, flight use) and can be adapted to customer requirements.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.
