Engineering:Vertical Hummingbird
| Hummingbird | |
|---|---|
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| |
| Role | Helicopter |
| National origin | United States |
| Manufacturer | Vertical Aviation Technologies |
| Introduction | 1991 |
| Status | In production (2013) |
| Developed from | Sikorsky S-52 |
The Vertical Hummingbird is an American helicopter, produced by Vertical Aviation Technologies of Sanford, Florida that was introduced in 1991. The aircraft is supplied as a kit for amateur construction.[1][2]
Design and development
The Hummingbird is a development of the certified Sikorsky S-52 that first flew in 1947, adapted to kit form. The aircraft features a single main rotor, a four-seat enclosed cabin, quadracycle landing gear and an option for skids.[1] The prototype was converted by Vertical Aviation Technologies from a Sikorsky S-52-3.[3]
The Hummingbird fuselage is made from riveted aluminum sheet. The nose section is adapted from the Bell 206. Its 33 ft (10.1 m) diameter fully articulated three-bladed main rotor employs a NACA 0015 airfoil.[4] The two-bladed tail rotor has a diameter of 5.75 ft (1.8 m). The aircraft has an empty weight of 1,790 lb (812 kg) and a gross weight of 2,800 lb (1,270 kg), giving a useful load of 1,010 lb (458 kg). With full fuel of 57 U.S. gallons (220 L; 47 imp gal) the payload is 668 lb (303 kg).[1][5]
Variants
- VAT S-52-3
- Prototype of the Hummingbird family, converted from an original Sikorsky S-52-3.[3]
- Hummingbird 260L
- Version powered by a six cylinder, air-cooled, four-stroke, dual-ignition 265 hp (198 kW) Lycoming IVO-435 engine[6]
- Hummingbird 300LS
- Version powered by an eight cylinder, liquid-cooled, four-stroke, single-ignition 325 hp (242 kW) General Motors LS7 V-8 automotive conversion engine, derated to 280 hp (209 kW)[7]
- Hummingbird 300L
- Version powered by a six cylinder, air-cooled, fuel injected IO-540 derated to 280 hp (209 kW)[5]
Specifications (Hummingbird 300L)
Data from Vertical Aviation[5]
General characteristics
- Crew: one
- Capacity: three passengers
- Width: 5 ft 0 in (1.52 m)
- Height: 8 ft 7 in (2.62 m)
- Airfoil: NACA 0015
- Empty weight: 1,790 lb (812 kg)
- Gross weight: 2,800 lb (1,270 kg)
- Fuel capacity: 57 US gallons (47 imp gal; 220 l)
- Powerplant: 1 × IO-540 six cylinder, air-cooled, four stroke fuel injected aircraft engine, 280 hp (210 kW)
- Main rotor diameter: 33 ft 0 in (10.06 m)
Performance
- Maximum speed: 110 mph (180 km/h, 96 kn)
- Never exceed speed: 110 mph (180 km/h, 96 kn)
- Range: 380 mi (610 km, 330 nmi)
- Service ceiling: 14,000 ft (4,300 m)
- Rate of climb: 950 ft/min (4.8 m/s) at 2,800 lb (1,270 kg)
References
- ↑ 1.0 1.1 1.2 Bayerl, Robby; Martin Berkemeier; et al: World Directory of Leisure Aviation 2011–12, page 194. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X
- ↑ Vertical Aviation Technologies (2013). "Home of the four passenger Hummingbird". http://vertical-aviation.com/.
- ↑ 3.0 3.1 John W.R. Taylor, ed (1988). Jane's All the World's Aircraft 1988–89. London: Jane's Information Group. p. 495. ISBN 0-7106-0867-5.
- ↑ Lednicer, David (2010). "The Incomplete Guide to Airfoil Usage". https://m-selig.ae.illinois.edu/ads/aircraft.html.
- ↑ 5.0 5.1 5.2 "Hummingbird 300L". https://vertical-aviation.com/specification.
- ↑ Vertical Aviation Technologies (2013). "Hummingbird 260L". http://vertical-aviation.com/hummingbird-kit-helicopter/260l/.
- ↑ Vertical Aviation Technologies (2013). "Hummingbird 300LS". http://vertical-aviation.com/hummingbird-kit-helicopter/300ls/.
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