:''This page is about the Automatic Activation Device for parachutes. For the tree family, see

Cupressaceae Cupressaceae is a conifer family, the cypress family, with worldwide distribution. The family includes 27–30 genera (17 monotypic), which include the junipers and redwoods, with about 130–140 species in total. They are monoecious, subdio ...

. 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 geo ...

. For the law doctrine, see

Cy-près doctrine The cy-près doctrine ( ; Law French, , modern French: ''si près'' or ''aussi près'') is a legal doctrine which allows a court to amend a legal document to enforce it "as near as possible" to the original intent of the instrument, in situations ...

.''

CYPRES is an acronym for Cybernetic Parachute Release System. It refers to a specific make and model of an

automatic activation device In skydiving, an automatic activation device (AAD) is a dead man's switch consisting of an electronic-pyrotechnic or mechanical device that automatically opens the main or reserve parachute container at a preset altitude or after a preset time. ...

(AAD), a device that automatically activates a

parachute A parachute is a device used to slow the motion of an object through an atmosphere by creating drag or, in a ram-air parachute, aerodynamic lift. A major application is to support people, for recreation or as a safety device for aviators, who ...

(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 A pilot chute is a small auxiliary parachute used to deploy the main or reserve parachute. The pilot chute is connected by a bridle to the deployment bag containing the parachute. Pilot chutes are a critical component of all modern skydiving and B ...

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 {{industry-stub de:Öffnungsautomat#Airtec Cypres