:''This page is about the Automatic Activation Device for parachutes. For the tree family, see
Cupressaceae. For the Mediterranean island, see
Cyprus
Cyprus ; tr, Kıbrıs (), officially the Republic of Cyprus,, , lit: Republic of Cyprus is an island country located south of the Anatolian Peninsula in the eastern Mediterranean Sea. Its continental position is disputed; while it is ...
. For the law doctrine, see
Cy-près doctrine.''

CYPRES is an acronym for Cybernetic Parachute Release System. It refers to a specific make and model of an
automatic activation device (AAD), a device that automatically activates a
parachute (typically as a reserve system for a skydiver) under certain circumstances. A CYPRES is designed to activate the reserve parachute at a preset altitude if the rate of descent is over a certain threshold. The manufacturer of the CYPRES is Airtec.
The CYPRES works by using a cutter to cut the reserve container closing loop. A spring-loaded
pilot chute then leaves the container and breaks through the skydiver's slipstream to begin reserve deployment.
"United States Parachute Association"
b
USPA
/ref>
The CYPRES comes in five different models: Expert, Student, Tandem, Speed and Wingsuit. The basic operation of the units is the same; only the activation parameters are different, having been optimized for different types of skydiving.
References
External links
Airtec website
CYPRES device website
CYPRES 2 (newer model) device website
Parachuting
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