For most space missions, it is necessary to stow and fix structures such as solar panels or antennas for the launch and to release them after the launch. This is realized with so-called hold-down and release mechanisms (HDRMs).
CREAM (Collet Release Mechanism Technology) is an HDRM based on shape memory alloy material and commercial standard engineering parts as the core for fixation and release.
CREAM
1kN, 2kN and 4kN Versions of the CREAM-Release mechanism technology
Self-resetting technology allows integrators to reset the actuator without touching it. The reset is performed simply by applying electrical energy. This allows the mechanism to remain permanently on the spacecraft after integration, even during and after tests. The actuation of the bolt is characterized by very low shock loads and therefore protects surrounding satellite components.
The mechanism has a high release force-to-mass or mass-to-volume ratio. This means that lightweight designs can be implemented in a small space. Due to the use of commercially available components and the low reset effort, the purchasing and operating costs for this application are comparatively low. The main properties of CREAM in combination make this HDRM a valuable and complementary component among the available HDRMs.
