TiNi Flat Pack FP50 Miniature Hold-Down Release Mechanism
Ensign-Bickford Aerospace & Defense (EBAD)
The TiNi Flat Pack FP50 is a miniature, non-pyrotechnic, and field-resettable hold-down release mechanism utilizing shape memory alloy for low-load applications.
Key figurescomparable across the catalogue
- Mass
- 0.033 kg
- Power
- 1.25 W
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Mass
- 1.17 oz (33 g) max
- Power
- 1.25 W @ .75 A
- Operational Current
- .4 A to 1.5 A
- Resistance
- 3.3±.3 Ω @ 23°C
- Max Release Load
- 50 lbf (222.4 N)
- Proof Load
- 100 lbf (444.8 N)
- Function Time
- 130 mSec @ .5 A (23°C) typical
- Max Torque
- 15 in-oz (106 N mm)
- Reusable
- By manual reset
- Life
- 50 cycles min
- Operational Temperature
- -65°C to + 70°C
- Non-Operational Pre-Actuation Temperature
- -150°C to + 70°C
- Non-Operational Post-Actuation Temperature
- -150°C to + 150°C
About
The TiNi Flat Pack FP50 is a miniature hold-down release mechanism (HDRM) designed for various low-load applications such as solar arrays, antenna reflectors, instruments, doors, sensors, and booms. It operates using a Shape Memory Alloy (SMA) wire that, when heated, reverts to its original shape, causing actuation. Key features include field resettability, an auto shut-off switch, low height (<.25"), no debris generation, qualification to standard launch environments, range safety friendliness, and the use of space-rated materials. The device is constructed with an SMA wire threaded through a bell crank, which retains a trigger that keeps drive springs on a slider compressed. A smaller reset spring assists in the reset process. It is non-pyrotechnic and can be manually reset, with a minimum life of 50 cycles. It has an extensive operational temperature range.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.