Solar Panels Hold-down Lock (mechanical)
Flight-proven solar panel hold-down lock (2500 kg clamping, 0.8 kg) with extensive GEO/LEO heritage including Express, Yamal, Glonass.
Technical specifications
- Purpose
- Holding solar panels in the stowed position
- Year of release
- 2007
- Guaranteed service life, years
- 15
- Estimated production/delivery time
- 4 months
- Flight heritage
- Amos-5, Yamal-300K, Express-AT1, Express-AT2, Express-AM8, KazSat-3, Loutch-5V, Express-AM5, Express-AM6, Yamal-401, Elektro-L, Spektr-R
- Clamping force, kg
- 2,500
- Ultimate bending moment at spacecraft interface, N·m
- 530
- Stowing pack width, mm
- 60–250
- Operating temperature range, °C
- -100 to +100
- Operational life (actuations), not less than
- 50
- Mass, kg
- 0.8
- TRL
- 9 (flight-proven)
About
The Solar Panels Hold-down Lock (mechanical) holds solar panels in the stowed position during launch and transit. It provides 2500 kg clamping force and resists 530 N·m bending moment at the spacecraft interface, accommodating solar panel stacking widths of 60–250 mm. The lock operates across -100 to +100 °C and is rated for at least 50 actuations. Mass is 0.8 kg. Released in 2007 with a 15-year guaranteed service life and 4-month delivery time. Extensive flight heritage including Amos-5, Yamal-300K/401, Express-AT1/AT2/AM5/AM6/AM8, KazSat-3, Loutch-5V, Elektro-L, Spektr-R.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.
