RotorWay Scorpion

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Scorpion

Role  | kit helicopter

Type of aircraft

Manufacturer  | Rotorway
Designer  | B.J. Schramm
First flight  | 1966
Produced  | 1968-1984

The RotorWay Scorpion is a family of helicopters manufactured by RotorWay International.

## Design and development

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Derived from an original design by B.J. Schramm, the Schramm Javelin evolved into the Schramm Scorpion, both of which were developed by the Schramm Aircraft Company. A new company, RotorWay Aircraft Inc., was formed to market and produce plans and kits for the Scorpion, described as a production version of the earlier Javelin.[1] Production of kits started in 1967 with the original Scorpion model, and ended with the discontinuation of the Scorpion 145 in 1984.

## Scorpion

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The Scorpion prototype was built in 1966, followed by the production of Scorpion kits in 1968.

* Gross Weight: about 700 lb (318 kg)
* Useful Load: 425 lb (193 kg)
* Range: 160 miles (257 km)
* Cruise Speed: 65 mph (105 km/h)
* Rate of Climb: 900 ft/min at sea level

## Scorpion Too

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The RotorWay Scorpion Too at the Steven F. Udvar-Hazy Center.

The Scorpion Too, or Scorpion II, was the first two-seater manufactured by RotorWay. It took about 2,000 hours to complete.

* Gross weight: 1,125 lb (510 kg)
* Useful load: 435 lb (197 kg)
* Range: 125 miles (201 km)
* Cruise speed: 75 mph (121 km/h)
* Rate of climb: 1,000 ft/min at sea level

## Scorpion 133

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Introduced in 1976, the Scorpion 133 was no different from the Scorpion Too, except for the new RW133 engine installed. This engine, the first built by RotorWay, was a 4-cylinder, 4-cycle, 133 horsepower (99 kW) engine. In 1977, because of the increased engine power, the length of the Scorpion's blades increased, from 24 feet (7.3 m) to 25 feet (7.6 m).

* Gross Weight: 1,235 lb (560 kg)
* Useful Load: 420 lb (191 kg)
* Range: 130 nmi (240 km) with one person, 79 nmi (146 km) with two people
* Cruise Speed: 80 mph (129 km/h)
* Rate of Climb: 800 ft/min

## Scorpion 145

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Produced briefly in 1984, the Scorpion 145 mounted the RW145 engine developed by RotorWay.

## Specifications (Scorpion Too)

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Data from Jane's All The World's Aircraft 1976-77 [2]

General characteristics

* Crew: 2
* Length: 20 ft 3.5 in (6.18 m) [3]
* Wingspan: 24 ft 0 in (7.32 m)
* Height: 7 ft 3.5 in (2.22 m)
* Airfoil: NACA 0015
* Empty weight: 750 lb (340 kg)
* Max takeoff weight: 1,200 lb (544 kg)
* Powerplant: 1 × RotorWay RW133 4-cylinder horizontally opposed liquid-cooled piston engine, 133 [4] hp (99 kW)
* Main rotor area: 452 sq ft (42.1 m2) two blade semi-rigid rotor

Performance

* Cruise speed: 78 kn (90 mph, 145 km/h)
* Range: 104 nmi (120 mi, 193 km)
* Ferry range: 156 nmi (180 mi, 290 km) auxiliary fuel
* Service ceiling: 10,000 ft (3,050 m)
* Rate of climb: 800 ft/min (4.1 m/s)
* Wing loading: 2.65 lb/sq ft (12.9 kg/m2)
* Hovering ceiling (in ground effect): 5,500 ft (1,375 m)

## See also

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* RotorWay Exec
* Homebuilt aircraft

## Notes

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1. ^ Taylor, John W. R.. Jane's All the World's Aircraft 1982-83. Jane's Publishing Company. London. 1982. ISBN 0-7106-0748-2
2. ^ Taylor 1976, p.529.
3. ^ nose to tail rotor axis.
4. ^ Taylor 1982, p. 795.

## References

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Wikimedia Commons has media related to RotorWay Scorpion.

* Taylor, John W.R.. Jane's All The World's Aircraft 1976-77. London: Jane's Yearbooks, 1976. ISBN 0-354-00538-3.
* Taylor, John W.R.. Jane's All the World's Aircraft 1982-83. Jane's Publishing Company. London. 1982. ISBN 0-7106-0748-2

* v
* t
* e

RotorWay aircraft and engines

Helicopters|

* 300T Eagle
* A600 Talon
* Elite
* Exec
* RW7
* Scorpion
* Windstar

Engines|

* RW133
* RW145
* RW152

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