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Automatic Parachute Ripcord Release

This Mechanical Automatic Parachute Ripcord Release supercedes all know applications of either pyrotechnic or mechanical devices for premeditated or emergency requirements. Featuring adjustment to 20,000 feet above sea level combined with zero to eight seconds of actuation delay and with its increased force and stroke, it can satisfy a variety of applications for today's personnel and cargo application. The basic working mechanics can accept the different arming and power cable assemblies to provide a simple, cost effective, reliable device for various operational requirements. With a projected live of 10 to 15 years, this device will satisfy objectives into the 21st century.


Use                                      To provide automatic opening of a parachute3 at a predetermined altitude

Type                                    Mechanical

Control                                Barometric Pressure

Altitude                               Sea level up to 20,000 feet in 500 foot increments

Piston stroke                        3.5 inches minimum

Power cable retraction        100 pounds at release point 40 pounds at 2.0 inch stroke

Arming force                       20 + 5 pounds

Time delay                          0 thru 8 seconds in .25 second increments

Weight                                30 ounces

Feature                                No special tool required for arming or setting

                              Ordering Information

Part No.                                                                  Description

811-00156                                  Release, Mechanical, Parachute Ripcord, Automatic

                                                            NSN 1670-01-094-3821