Raven On-Landing Parachute Release

Fruity Chutes Inc

RCR-CR-KIT-187-F

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The Raven On-Landing Parachute Release (ROPR) is a patented device that allows a parachute to be automatically released from a payload upon landing. This mitigates possible damage caused by wind that could otherwise drag a valuable payload after landing.

Unlike other on-landing release devices, the Raven On-Landing Parachute Release is designed specifically for UAV and rocketry use and is lightweight, compact, and easy to use.

For people undergoing ASTM flight testing, the ROPR minimizes damage from multiple test flights where wind conditions can damage the drone being tested.

This type of device has many applications for situations where having the parachute detach after landing is a huge benefit, such as landing drones, rockets and other UAS. Additional uses include (but are not limited to) water drop payloads such as sonobuoys - where the payload needs to detach after splashdown - and airdrop cargo systems.

How it Works

In order to work reliably, the ROPR has an internal hold timer that assures the parachute will not be released early after initial deployment due to opening bounce or other deployment shocks. The hold timer locks the device while the parachute is opening and unstable.

After being under chute in steady descent for a period of time, the hold timer rotates to allow for release only after the landing - when the pull of the parachute unloads. Under no conditions can the parachute release early as long as the main parachute is open and the ROPR remains under load.

Two Versions Available

The Raven hold timer is available in two variants, the FAST unit has a hold time between 3 to 5 seconds.  The SLOW unit has a hold time between 6 to 9 seconds.  The FAST variant can be used where the deployment altitude is lower.  The SLOW variant can bs uses when the parachute needs more time to reach stability. 

Specifications

Maximum Recommended Recovery Weight

100 lb (50 kg)

Minimum Recommended Recovery Weight

7 lb (3.2 kg)

Maximum Sustained Pull Force

800 lb (360 kg)

Maximum Shock Load

1500 lb (680 kg)

Physical Specifications

Weight

4.7 oz (132 g)

Overall Length

6" (152 mm)

Body Diameter

1.13" (28.7 mm)

Environmental Specs

Hold Lock Time at 14°F (-10°C)

Fast 5 to 15 sec, Slow 7 to 18

Hold Lock Time at 75°F (24°C)

Fast 2.5 to 5.5 sec, Slow 5.5 to 9.5

Hold Lock Time at 122°F (50°C)

Fast 2.25 to 5.5 sec, Slow 4.5 to 8

Minimum Operational Temperature

14°F (-10°C)

Maximum Operational Temperature

122°F (50°C)

Materials

Aluminum Finish

Blue Anodizing

Upper and Lower Shells

6061-T6 Aluminum

Catch Pin and Top Extension

High Strength Stainless Steel

Catch Bearing

Hardened Stainless Steel