Engineering:Weatherly 620
| Weatherly 620 | |
|---|---|
_at_Bankstown_Airport_(1).jpg)
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| A Weatherly 620B in 1998 | |
| Role | Agricultural aircraft |
| National origin | United States |
| Manufacturer | Weatherly Aircraft Company |
| First flight | 1979 |
| Number built | 155 |
| Developed from | Weatherly 201 |
The Weatherly 620 is a 1970s United States agricultural monoplane designed and built as an improved variant of the Weatherly 201 by the Weatherly Aircraft Company of McClellan, California.[1]
Design
The Weatherley 620 is an all-metal single-seat low-wing cantilever monoplane with a conventional landing gear with a tailwheel. Examples have been fitted with a Pratt & Whitney R-985 radial engine, and PT6A or TPE331 turboprop engine, driving a three-bladed tractor propeller. In the forward fuselage, the aircraft has a either a 355 US gallon hopper or a 320 US gallon hopper that feeds an agricultural dispersal system. Most pilots that fly the weatherly aircraft, prefer the 320 gallon hopper aircraft. [1]
Variants
- Model 620
- 1979 initial production variant.
- Model 620A
- 1987 production variant with a Pratt & Whitney R-985 radial engine.
- Model 620B
- 1992 production variant with a Pratt & Whitney R-985 radial engine.
- Model 620TP
- 1980 turboprop variant with a Pratt & Whitney PT6A-11AG.
- Model 620B-TG
- 1997 improved turboprop variant to replace the 620TP with a Honeywell TPE331 turboprop.
Specifications (620BTG)
_at_Bankstown_Airport.jpg)
Data from Jane's All The World's Aircraft 2004-05 [1]
General characteristics
- Crew: 1
- Capacity: 355 US Gallons (1344litres) hopper
- Length: 29 ft 8 in (9.04 m)
- Wingspan: 46 ft 8 in (14.22 m)
- Height: 9 ft 6 in (2.90 m)
- Wing area: 277 sq ft (23.1 m2)
- Empty weight: 3,030 lb (1,374 kg)
- Max takeoff weight: 6,000 lb (2,721 kg)
- Powerplant: 1 × Honeywell TPE331 turboprop, 500 hp (373 kW)
Performance
- Cruise speed: 122 kn (140 mph, 226 km/h)
- Stall speed: 62 kn (72 mph, 115 km/h)
- Never exceed speed: 153 kn (176 mph, 283 km/h)
- Service ceiling: 15,000 ft (4,572 m)
- Rate of climb: 1,400 ft/min (7.1 m/s)
References
- Notes
- Bibliography
- Jackson, Paul, ed (2004). Jane's All the World's Aircraft 2004-2005. Coulsdon, Surrey, United Kingdom: Jane's Information Group. ISBN 0-7106-2614-2.
External links
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