Emair MA-1
Paymaster / Diablo 1200 | |
---|---|
Emair MA-1B at Harlingen Texas in 1975 | |
Role | Agricultural biplane |
Manufacturer | Emair |
First flight | 1969 |
Number built | 73 |
The Emair MA-1 Paymaster was a 1960s American agricultural biplane aircraft built by Emair, which was part of the Hawaiian Murray company. The prototype was constructed and flown in New Zealand, with production aircraft built in the United States at Harlingen, Texas.
Development
The prototype Murrayair MA-1 was built by
Production and development
Emair began production of the aircraft at Harlingen in Texas. The production aircraft were named Agronemair MA-1 Paymaster at first, then designated the Emair MA-1 Paymaster. Production ended in 1976 after 25 had been built.[2]
In 1975 Emair developed an improved version, the Emair MA-1B Diablo 1200, which was essentially an MA-1 with a more powerful
Forty-eight MA-1s had been built by early 1980, with production being suspended by the end of the year due to poor market conditions.[3] At the end of the 1980s the company halted production after a further 23 Diablos had been built.[4]
Variants
- Murrayair MA-1
- New Zealand-built prototype with a 600hp (447kW) Pratt & Whitney R-1340-AN1 Waspradial engine.
- Emair MA-1 Paymaster
- Production aircraft, 25 built.
- Emair MA-1B Diablo 1200
- Improved version with a 900hp (671 kW) de-rated Wright R-1820radial engine, 48 built.
Specifications (Diablo 1200)
Data from Jane's All The World's Aircraft 1980–81[5]
General characteristics
- Crew: One
- Capacity: 475 US gal (396 imp gal; 1,800 L) hopper, 3,000 lb (1,400 kg) load
- Length: 30 ft 0 in (9.14 m) (tail up)
- Upper wingspan: 41 ft 8 in (12.70 m)
- Lower wingspan: 35 ft 0 in (10.67 m)
- Height: 11 ft 9 in (3.58 m) (tail down)
- Wing area: 400 sq ft (37 m2)
- Airfoil: NACA 4412 (modified)
- Empty weight: 4,250 lb (1,928 kg)
- Max takeoff weight: 8,400 lb (3,810 kg)
- Powerplant: 1 × Wright R-1820radial piston engine , 900 hp (670 kW) (derated from 1,200 hp (890 kW)
- Propellers: 3-bladed Hamilton Standard Hydromatic constant-speed propeller, 10 ft 0 in (3.05 m) diameter
Performance
- Maximum speed: 117 mph (188 km/h, 102 kn) CAS
- Stall speed: 53 mph (85 km/h, 46 kn) (power on)
- Never exceed speed: 148 mph (238 km/h, 129 kn) CAS
- Rate of climb: 1,700 ft/min (8.6 m/s)
See also
Aircraft of comparable role, configuration, and era
- Grumman Ag Cat
- Snow S-2
References
- ^ Taylor 1971, p. 360
- ^ Taylor 1980, p. 333
- ^ Taylor 1981, p. 349
- ^ Simpson 1991, p. 349
- ^ Taylor 1980, pp. 333–334
- The Illustrated Encyclopedia of Aircraft (Part Work 1982–1985), 1985, Orbis Publishing, Page 1600.
- Taylor, John W. R., ed. (1971). Jane's All The World's Aircraft 1971–72. London: Sampson Low, Marston & Co., Ltd. ISBN 0-354-00094-2.
- Taylor, John W. R., ed. (1980). Jane's All The World's Aircraft 1980–81. London: Jane's. ISBN 0-7106-0705-9.
- ISBN 0-7106-0729-6.
- Simpson, R.W. (1991). Airlife's General Aviation. England: Airlife Publishing. ISBN 1-85310-194-X.