UNIKA preload tool for space mechanisms

Key highlights

Preload is achieved electronically in >> PURE TENSION << by controlled heating of the Shape Memory Alloy with precision >99%.

The device is corrosion resistive, clean, without use of any fluid or grease. It can be safely operated in clean room environment. UNIKA is light and transportable and designed to be operated in small and difficult to access locations.

Final tightening of the nut is achieved comfortably through the device itself – no side access to nut is required!

If your AIT team is interested in UNIKA solution to, contact our team to set up a trial. Accepting orders for 2027.

Applications

• Preload of:

  • Solar array HDRMs

  • Antenna HDRMs

  • Satellite separation mechanisms

  • Launcher and fairings non-explosive separation mechanisms

  • Sensitive fasteners

Key features

Light cleanroom friendly replacement of hydraulic preload systems. Full set contains:

• Mechanical effector unit

• Power source/control electronics

• All necessary cables, charger

• Reset docking station

• Rugged transportation enclosure

• User manual

FEATURES:

• Mechanical interface: User customized mating head (see datasheet for typical)

• Release bolt thread: User customized up to M10

• Generated preload: Up to 50 kN @ max 3 mm travel

• Preload control: Handheld display (regulation by build-in load)

• Reset: By supplied docking station after 5-10 preloads depending on application

• Preload time: +- 5 minutes (initial temperature dependent)

• Preload accuracy: better than 1% error

• Safety features: Enclosed body, energy dissipation foam, safety I/F, automatic prevention of overload and overheat 

• User records of preload data: force/time, temperature/time

Customization

• Mating head customization

• Mating thread customization

• Optional torque brake for sensitive HDRAs

Manufacturing

• UNIKA is fully manufactured in the EU