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Low Shock Release Device (LSRD-10K/C-2000)

Low Shock Release Device (LSRD-10K/C-2000)
Registration date(updated date) 2/12/2016(25/4/2018)
JAXA development group Research Unit II, Research and Development Directorate
View diagram See Attachment 1
Environmental resistance See Attachment 2
Patent number
(publication number)
Reference N/A
Satellite and launch date Flight-proven.
8 devices Installed in the TSUBAME (Super Low Altitude Test Satellite. Launched at December 23, 2017).
Note N/A


Mitsubishi Electric Corporation
Kamakura city, Kanagawa-ken, JAPAN


By converting the holding tension force to rotational motion of an inner rotor, it is possible to prolong the operating time to release (shock reduction).
Shape memory alloy is adopted as trigger mechanism.

  • Low shock level (200 Gsrs or less @ 10kN)
  • Reusable
  • Small and light weight
  • Easy-handled


For many types of hold-down and release mechanisms.

  • Solar array panels
  • Launch locks of antenna
  • Small satellite separation mechanisms
  • and so on


Property Specification
Load 10kN (2248 lbf)
Shock level 200Gsrs ↓ @10kN
Actuation period 150msec ↓
Life 25times
Reusability Resettable without refurbishment
Dimension φ52×43mm(φ2.047×1.693inch)
Weight 350g (12.35 oz) ↓
Temperature range Nonoperating -80 to +60C(-112 to +140F)
Operating -55 to +60C(-67 to +140F)
Resistrance value 3.0±1.0Ω
Actuation current 6.0+1.5/-0.7A
Current pulse width 30±3msec