Avia 51
| Avia 51 | |
|---|---|
 |
|
| Avia 51 of the Spanish Republican Air Force | |
| Role | 6-passenger commercial transport |
| National origin | Czechoslovakia |
| Manufacturer | Avia |
| Designer | Robert Nebesář |
| First flight | 1933 |
| Primary user | CLS |
| Number built | 3 |
The Avia 51 was a 1930s Czechoslovakian 6-passenger commercial transport designed by Robert Nebesář and built by Avia. The type was uneconomical in use and only three were built.[1]
Development
The Avia 51 was a three-engined high-wing cantilever monoplane designed for the Czech national airlines CLS.[1] It was built with a duraluminium monocoque fuselage and a fixed tailwheel landing gear.[2] Powered by three Avia Rk.12 radial engine, two fitted into the leading edges of the wing and one nose-mounted.[2] It had a two-man flightdeck and an enclosed luxury cabin for five or six passengers, it was not large enough to stand up (5 ft 1in) but did have a separate lavatory compartment, it also had three luggage and mail compartments.[2]
Operational history
The Avia 51 entered service on the Berlin-Prague-Vienna route but with only a small passenger capacity it proved uneconomical to operate.[1] In 1937 the aircraft were sold to the Estonian government, one appeared operating for the Spanish Republican Air Force in the Spanish Civil War and it was reported the other two were lost at sea when the freighter carrying them to Bilbao was sunk.[1]
Operators
Specifications
General characteristics
- Crew: 2
- Capacity: 6
- Length: 10.75 m (35 ft 3 in)
- Wingspan: 15.10 m (49 ft 6 in)
- Height: 3.50 m (11 ft 6 in)
- Wing area: 38.00 m2 (409.0 sq ft)
- Empty weight: 2,990 kg (6,592 lb)
- Max takeoff weight: 3,750 kg (8,267 lb)
- Powerplant: 3 × Avia Rk.12 7-cylinder air-cooled radial engine, 150 kW (200 hp) each
Performance
- Maximum speed: 264 km/h (164 mph; 143 kn)
- Cruising speed: 230 km/h (143 mph; 124 kn)
- Range: 780 km (485 mi; 421 nmi)
- Service ceiling: 4,000 m (13,123 ft)
- Rate of climb: 4.2 m/s (820 ft/min)
- Lift-to-drag: 10.2
- Wing loading: 94 kg/m2 (19.3 lb/sq ft)
See also
- Related lists
References
Notes
Bibliography
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