A soft three-ring release mechanism – ultra-lightweight, damage-free separation for UAVs and parachutes.
When a recovery parachute has done its job, it has to let go, cleanly, on command, and without metal hardware slamming into a carbon fiber airframe. This is how APCO replaced the classic metal three-ring release with an all-textile one.
The Challenge
The customer required a super lightweight release solution for UAV recovery. Traditional metal three-ring systems posed two critical issues:
- Damage risk – in the event of rebound, hard metal hardware could strike and damage the UAV’s carbon fiber body.
- Unwanted release – previous experiences with automatically engaging/releasing systems caused premature separation before touchdown, resulting in damage and mission failure.
The challenge was to design a fully textile release mechanism that avoided these risks while remaining reliable, serviceable, and simple to integrate.
Our Solution
APCO Aviation Defense developed a completely soft three-ring release mechanism, manufactured from the same high-strength webbing and textile materials as the parachute system itself. This ensured seamless integration, equal service life, and no changes required in handling or storage practices.
Ultra-Lightweight, Damage-Free Design
- Entirely textile-based – no metal hardware.
- Prevents any damage in the event of rebound against UAV fuselage.
- Extremely strong and compact, maintaining full deployment safety.
Controlled, Manual Release
- Designed for active engagement/activation only – preventing any accidental or premature release.
- Customer gains full control of parachute detachment timing.
- Optimized specifically for ground-touchdown separation scenarios.
Mission-Ready Advantages
- Withstands extreme parachute opening shock without failure.
- Serviceable within the same cycles as the parachute canopy.
- Customized to UAV recovery missions, cargo drops, and defense applications.
Results
- Safe for UAVs – protects carbon fiber fuselages from impact damage.
- Zero accidental openings – only releases when manually activated.
- Lightweight advantage – eliminates heavy metal components while retaining strength.
- Full lifecycle integration – matches parachute service intervals and storage protocols.
Testing & Validation
The soft three-ring release mechanism has been tested under:
- Extreme opening shocks – proven strength with no accidental release.
- Full mission cycles – validating reliability in UAV recovery operations.
- Environmental exposure – resistant to dust, sand, saltwater, and high/low temperatures.
Testing confirms that the soft release mechanism provides maximum mission safety, eliminating the disadvantages of traditional metal hardware in UAV applications.
