RotorWay Scorpion
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| Scorpion | |
|---|---|
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| Role | kit helicopter |
| Manufacturer | Rotorway |
| Designer | B.J. Schramm |
| First flight | 1966 |
| Produced | 1968-1984 |
| Unit cost | $4500 in 1971[1] |
The Scorpion line of helicopters was manufactured by RotorWay International.
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[edit] Design and development
Derived from an original design by Mr 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.[2] Production of kits started in 1967 with the original Scorpion model, and ended with the discontinuation of the Scorpion 145 in 1984.
[edit] Scorpion
The Scorpion prototype was made 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
[edit] Scorpion Too
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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
[edit] Scorpion 133
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
[edit] Scorpion 145
Produced briefly in 1984, the Scorpion 145 contained the RW145 engine developed by RotorWay.
[edit] Specifications (Scorpion Too)
Data from Jane's All The World's Aircraft 1976-77 [3]
General characteristics
- Crew: 2
- Length: 20 ft 3½ in[4] (6.18 m)
- Rotor diameter: 24 ft 0 in (7.32 m)
- Height: 7 ft 3½ in (2.22 m)
- Disc area: 452 ft² (42.1 m²)
- Airfoil: NACA 0015
- Empty weight: 750 lb (340 kg)
- Max. takeoff weight: 1,200 lb (544 kg)
- Powerplant: 1 × RotorWay 4-cylinder horizontally-opposed liquid cooled piston engine, ()
Performance
- Cruise speed: 78 knots (90 mph, 145 km/h)
- Range: 104 nmi (193 mi, 120 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)
- Disc loading: 2.65 lb/ft² (12.9 kg/m²)
- Hovering ceiling (in ground effect): 5,500 ft (1,375 m)
[edit] See also
[edit] Notes
- ^ Air Trails: 18. Winter 1971.
- ^ Taylor, John W. R.. Jane's All the World's Aircraft 1982-83. Jane's Publishing Company. London. 1983. ISBN 0710607482
- ^ Taylor 1976, p.529.
- ^ nose to tail rotor axis.
[edit] References
- 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. 1983. ISBN 0710607482
