Heating element for SMA technology

A° Single One-time Use Valve:

The propulsion systems are equipped with valves, which are usually closed. To feed the thrusters, one-time single-use valves are required to achieve an open position and allow the passage of gas or liquid.

The typical technology that has been used up to now is a pyrotechnic process to eject the nut and open the fuel circuit. This technique has several drawbacks such as mechanical shocks, sealing breakage and fuel contamination.

SMA technology makes the propulsion system valve secure due to zero shock and zero risk of contamination.

B° Non-Pyrotechnic Hold Down & Release Mechanism:

Typical application is the locking of solar arrays, antennas and instruments during launch and deployment when orbiting.

Compared to the conventional pyrotechnic system, SMA offers a weight and volume reduction and a simpler design.

In order for the SMA to function, it must be coupled with a heating element to cause a thermo-mechanic phases passage inside the actuator to create movement. The heating device must be as small as possible for integration and to reduce weight.