EBAD one of the global leaders in non-pyrotechnic Hold Down & Release Mechanisms (HDRM) for the spacecraft market has introduced a new electrically initiated, one-shot release mechanism for satellites and spacecraft deployment.

The NEA Model 9100 is a Hold Down & Release Mechanisms (HDRM) that features a non-explosive hold down and release function and can support restrained preloads as high as 6kN (1,360 lbf). It has extremely low release shock and high simultaneity of multiple hold-down points. This release mechanism has a wide operating temperature range and is constructed using space-rated materials.

Principle of Operation

The NEA Model 9100 is an electrically initiated, one-shot release mechanism that has the ability to carry a very high tensile preload until commanded to release. The preload is applied through a release rod held in place by two separable spool halves which are in turn held together by a tight winding of restraining wire. The restraint wire is held in place by redundant electrical fuse wires; actuation of either circuit allows release, assuring maximum reliability. When sufficient electrical current is applied, the restraint wire unwinds allowing the spool halves to separate releasing the release rod and the associated preload.

The actuation is simple and reliable and forms the basis of actuation for many of EBAD’s other products including Pin Pullers, Battery Cell Bypass Switches, and Non-Pyrotechnic Valves. 

Typical applications of the NEA Model 9100 include antennas, reflectors, solar arrays, and deployable radiators. It can also be used in booms, masts, and scientific instruments. The NEA Model 9100 is suitable for use in launch vehicles and missile stage and fairing separation.

Click here to learn more about the NEA Model 9100 Hold and Release Mechanism.

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