Enstrom F-28
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An Enstrom F-28C on inflatable floats, 1986
The Enstrom F-28 and 280 are a family of small, light piston-engined helicopters produced by the Enstrom Helicopter Corporation.[1]
Design and development
Since delivering their first helicopter shortly after Federal Aviation Administration type certification of the F-28 model in April 1965, Enstrom helicopter has produced (as of 2007) approx 1,200 aircraft.[2]
The company produces three models, the F-28, the more aerodynamic 280 and the turbine-engined 480, each with their own variants. The F-28 and 280 both use Lycoming piston engines virtually identical to those found in general aviation fixed-wing aircraft.[1]
Variants
F-28
1973 model F-28A
Enstrom F-28F used by Universal Helicopters of Newfoundland and Labrador for training, 1988
- F-28
- Certified April 1965.[1][3]
- F-28A
- Initial production version. Certified May 1968.[1][3]
- T-28
- Turbine powered.[1]
- F-28B
- Turbocharged version.[1]
- F-28C
- Fitted with an upgraded engine with turbocharger, and a two piece windscreen. Certified 1975[1][3]
- F-28C-2
- Fitted with a more rounded cabin, a single piece windsrceen and new console.[citation needed]
- F-28F Falcon
- Similar to F-28C with more powerful engine, improved turbocharger and addition of a throttle corellator. Certified December 1980[1][3]
- F-27F-P
- Police patrol version developed for the Pasadena Police Department. It is equipped with searchlights, FLIR and a PA system. [citation needed]
280
Enstrom 280FX Shark, an aerodynamically restyled Enstrom F-28 for the corporate market
- 280 Shark
- Certified September 1975.[1]
- 280C Shark
- Aerodynamically refined version of the F28C-2, equipped with an upgraded engine, fitted with a turbocharger. Certified 1975[1]
- 280L Hawk
- Stretched cabin four-seat version, first flying in December 1968. Development halted due to lack of funds.[citation needed]
- 280F
- Similar to 280C with more powerful engine, improved turbocharger and addition of a throttle correlator. Certified December 1980[3]
- 280FX
- Based on the 280F with landing gear fairings, redesigned air intakes on top of the cabin and a redesigned a relocated horizontal stabilizer with vertical end plates. Certified in January 1985[3]
Operators
Specifications (F28F)
Data from Brassey's World Aircraft & Systems Directory[9]
General characteristics
- Crew: One
- Capacity: Two passengers
- Length: 29 ft 3 in (8.91 m)
- Rotor diameter: 32 ft (9.75 m)
- Height: 9 ft (2.74 m)
- Disc area: 804 ft² (74.7 m²)
- Empty weight: 1,570 lb (712 kg)
- Loaded weight: 2,600 lb (1,179 kg)
- Useful load: 1,030 lb (467 kg)
- Max. takeoff weight: 2,600 lb (1,179 kg)
- Powerplant: 1 × Lycoming HIO-360-F1AD piston engine, 225 hp (168 kW)
Performance
- Maximum speed: 97 knots (112 mph, 180 km/h) (max cruise)
- Cruise speed: 89 knots (102mph, 164 km/h)
- Range: 241 nm (277 mi, 446 km)
- Service ceiling: 12,000 ft (3,660 m)
- Rate of climb: 1,450 ft/min (7.37 m/s)
- Disc loading: lb/ft² (kg/m²)
- Power/mass: hp/lb (W/kg)
See also
- Related development
- Aircraft of comparable role, configuration and era
- Brantly B-2
- Robinson R22
- Robinson R44
- Schweizer 300C
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 Apostolo, Giorgio: The Illustrated Encyclopedia of Helicopters, pages 64-65. Bonanza Books, New York, 1984. ISBN 0-517-43935-2
- ↑ Rotorspot.nl: Enstrom Production List
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 FAA Type Certificate
- ↑ "World's Air Forces 1990 pg. 41". flightglobal.com. Retrieved 7 March 2013.
- ↑ "Ejercito de Chile 280FX". Retrieved 7 March 2013.
- ↑ 6.0 6.1 "World Air Forces 2013". Flightglobal Insight. 2013. Retrieved 10 March 2013.
- ↑ "California, Pasadena Police Department Air Operations". policehelicopterpilot.com. Retrieved 7 March 2013.
- ↑ 8.0 8.1 "Enstrom F-280FX Shark".
- ↑ Taylor, M J H (editor) (1999). Brassey's World Aircraft & Systems Directory 1999/2000 Edition. Brassey's. ISBN 1-85753-245-7.
External links
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