At low speed

TM 10-1670-327-23&P

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Reserve Parachute Deployment Sequence. Upon activation by means of the ripcord handle, the closing

pins are extracted. From this point on the parachutist has nothing to do in order to ensure or enhance the

performance of the reserve system. Following pin extraction, the ejector spring parts the flaps of the

container launching an extractor cap from the solid flat base and places the top portion of the parachute with

its associated extraction and assistor system away from the parachutist and into clean air flow. Both the

primary extractor parachute and the scoops inflate almost immediately and carry first the `S' folded canopy

and then the lines from the tray up and alongside the malfunctioned main parachute (if present).

The T-11R parachute responds differently to different situations as follows:

1. At low speed. The combination of ejector spring and double deployment system apply a positive

force to the apex of the reserve canopy to expedite and control the deployment thus reducing the risk

of entanglement. Tests have shown that the primary extractor parachute is too big when inflated, and

lacks momentum (as there is no pilot chute spring mass), to get into the main parachute line cone.

The scoops operate in a similar manner. Once aligned the open skirt is presented to the airflow. By

virtue of the skirt assist lines the normal orifice for inflation is greatly enhanced allowing the funneling

of air into the parachute.

2. At high speed. The high drag of the lightweight extractor parachute is not required after canopy

elongation. In this event the securing ties break and release the extractor parachute to go free.

Moreover at line stretch, the frangible skirt assist lines break preventing the hem from flaring

prematurely, and allowing the canopy to inflate in a conventional manner.

END OF WORK PACKAGE

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