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Sikorsky Cypher

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Top speed  96 km/h
Manufacturer  Sikorsky Aircraft
Length  1.88 m
Sikorsky Cypher Untitled Document

Similar  Northrop Grumman MQ 8 Fire Scout, General Atomics MQ 1 Predator, Boeing X 45

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The Sikorsky Cypher and Cypher II are types of unmanned aerial vehicles developed by Sikorsky aircraft. They are vertical takeoff and landing aircraft which use two opposing rotors enclosed in a circular shroud for propulsion.

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Sikorsky Cypher Sikorsky Cypher UAV Papercraft

Cypher

Sikorsky Cypher Sikorsky Cypher flying donut saucer UAV first built in the 1980s

In the late 1980s, Sikorsky Aircraft flew a small UAV named "Cypher", with coaxial rotors inside a torus-shaped airframe. The torus shroud improved handling safety and helped increase lift. The first proof-of-concept Cypher was 1.75 meters (5.75 feet) in diameter and 55 centimeters (1.8 feet) tall, weighed 20 kilograms (43 pounds), and was first flown in the summer of 1988. This design was powered by a four-stroke, 2.85 kW (3.8 hp) engine and was mounted on a truck for forward-flight tests.

Sikorsky Cypher httpsuploadwikimediaorgwikipediacommonsthu

It led to a true flight prototype Cypher that weighed 110 kilograms (240 pounds), had a diameter of 1.9 meters (6.2 feet) and was powered by a compact, 40 kW (53 hp) rotary engine. After an initial free flight in 1993, the Cypher prototype was used in flight tests and demonstrations through most of the 1990s, ultimately leading to a next-generation design, the Cypher II, which was a competitor in the United States Navy VT-UAV competition.

Sikorsky Cypher Sikorsky MARINERquotCypher IIquot helicopter development history

The single prototype first flew in April 1992 and flew untethered in 1993. Since then, over 550 demonstration flights have been made for the US government.

The Cypher can carry a sensor package on struts above its hull, or can transport loads weighing up to 50 lb (23 kg).

Cypher II

Two Cypher II prototypes have been built for the US Marine Corps, which calls it "Dragon Warrior". The Cypher II is similar in size to its predecessor, but has a pusher propeller in addition to its rotor and can be fitted with wings for long-range reconnaissance missions. In its winged configuration, the Cypher II has a range of over 185 kilometers (115 miles) and a top speed of 230 km/h (145 mph). It is unclear if the Cypher will enter production.

Specifications (Cypher)

General characteristics

  • Crew: none
  • Capacity: 50 lb (23 kg)
  • Length: 6 ft 2 in (1.88 m)
  • Rotor diameter: 4 ft 0 in (1.22 m)
  • Height: 2 ft 0 in (0.61 m)
  • Disc area: 25.2 ft² (2.4 m²)
  • Loaded weight: 264 lb (120 kg)
  • Max. takeoff weight: 300-340 lb (136-154 kg)
  • Powerplant: 1 × UAV Engines AR801 Wankel rotary engine, 50 hp (37 kW)
  • Performance

  • Maximum speed: 52 knots (60 mph, 97 km/h)
  • Range: 49-67 nm (56-77 mi, 90-125 km) depending on model
  • Service ceiling: 8,000 ft (2,440 m)
  • Disc loading: 9.9 lb/ft² (47.5 kg/m²)
  • Power/mass: 0.2 hp/lb (0.32 kW/kg)
  • Endurance: 2-3 hours
  • Avionics

  • EO, FLIR, small radars, chemical detectors and magnetometers, radio relay, and non-lethal payloads
  • References

    Sikorsky Cypher Wikipedia


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