We are a global leader in pyrotechnic Hold Down Release Mechanisms (HDRM) for space, aircraft and subsea applications. Whether in space, on aircraft or in the sea, dependability is required for mission critical systems needing release mechanisms that are designed and developed for low shock, highly reliable separation nuts for applications in submarine, launch vehicle, satellite, and payload systems. An example would be a HDRM for CubeSat and SmallSat launches. Our Mechanisms are custom made to meet your mission requirements, from the separation nut size to the specific materials, the success of your application is at the center point of our design

HOW SEPARATION NUTS WORK

Designed to provide mechanical release of various component devices, the most common design configuration consists of a housing containing a segmented thread interface which is compatible with the threads on the mating stud.

Most separation nuts are externally actuated using an impulse or pressure type cartridge. When the release nut is a pyrotechnical actuated the threaded segments will be allowed to move away and expand, resulting in the release of the mating device.

Functions

The separation nut provides a pyrotechnic solution for critical release events. Some of the most common uses include satellite deployment along with clamp release applications for weapons launch systems.

Applications

Our separation nut designs are qualified and used on

vertical rocket launches

anti-submarine rocket deployment systems

CubeSat deployment systems

SmallSat deployment systems

Antennas

Scientific instruments

Solar arrays

Reflectors

Satellite, spacecraft and payloads

Booms and masts

Launch locks for gimbles, nozzles and thrusters

PERFORMANCE CHARACTERISTICS

All-Fire: 5.0/20 millisecond pulse

No-Fire: 1 amp/1 watt for 5 minutes

Operating Temperature: -65 °F to +225 °F

Axial Load Retention: Tested with an axial load of 29,500 ± 500 pounds

Hermesticity (pre-function): Leak rate shall not exceed 2.7 x 10-5 cc/sec of Helium at 1 atmosphere differential.

Applicable Specifications: Qualified to: MIL-N-82943A, MIL-I-23659