Solar Panels Hold-down Lock (mechanical)
Glavkosmos
A mechanical hold-down lock designed to secure solar panels in their stowed position during launch and early orbital operations, featuring a robust clamping force and extensive flight heritage.
Key figurescomparable across the catalogue
- Mass
- 0.8 kg
- Lead time
- 4 months
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Year of release
- 2007
- Design life
- 15 years
- Lead time
- 4 months
- Brief history of flight qualification
- 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
- 2500 kg
- Ultimate bending moment at the interface surface with the spacecraft, n·m
- 530
- Stowing pack width
- 60 to 250 mm
- Operating temperature range
- -100 to +100 °C
- Operational life defined by the number of actuations, not less than
- 50
- Mass
- 0.8 kg
About
The Solar Panels Hold-down Lock (mechanical) is a critical component within a spacecraft’s solar array mechanical device, engineered to reliably hold solar panels in their stowed configuration. Released in 2007, this mechanism boasts a guaranteed service life of 15 years and an estimated production/delivery time of 4 months. It is designed to withstand the harsh space environment, operating across a wide temperature range from -100 to +100 °С. The lock provides a substantial clamping force of 2500 kg and can accommodate stowing pack widths from 60 to 250 mm. Its operational life is defined by a minimum of 50 actuations. This product has a significant flight qualification history, having been deployed on numerous satellites including Amos-5, Yamal-300K, Express-АТ1, Express-АТ2, Express-АМ8, KazSat-3, Loutch-5V, Express-АМ5, Express-АМ6, Yamal-401, Elektro-L, and Spektr-R.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.