Separation Nut PSM 1/2B
RUAG Space
Low-shock separation nut for constellation-class satellites of typically 500-1000 kg, qualified per AIAA S-113-2005.
Technical specifications
- Target spacecraft class
- Constellation class satellites, typically 500-1000 kg
- Qualification
- AIAA S-113-2005 (former DOD-E-83578A)
- Initiators
- Dual NSI equivalent (PC23, 103377-191/-449/-500, PD222400024-009, 2-8001140-1, 852420-XX)
- Worst-case tests passed
- Single 80% initiator, cold case, no o-ring, 150% external load - 100% success
- Design feature
- Internal mechanical leverage reduces initiator pressure spike and shock; direct drop-in replacement for classical higher shock separation nuts
About
The Beyond Gravity PSM 1/2B Separation Nut is the medium member of the family of Low Shock Separation Nuts designed for interfacing medium sized spacecraft with launch vehicles. It has been developed to fit constellation class satellites, typically 500-1000 kg.
The PSM 1/2B introduces an internal mechanical leverage minimizing the required pressure spike generated by the initiators. Hence the shock is significantly reduced without sacrifice of reliability compared with heritage separation nuts.
The separation nut avoids metals with different thermal expansion coefficients to achieve a wide thermal operation range. It has been designed as a direct drop-in replacement for many of the classical higher shock separation nuts.
It is qualified per AIAA S-113-2005 (former DOD-E-83578A) and initiated by dual NSI equivalent initiators. Worst case scenarios were tested with 100% success: single 80% initiator, cold case, no o-ring, and 150% external load.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.