Dornier Do K
| Dornier Do K | |
|---|---|
| 300px | |
| Do K3 | |
| Role | Airliner |
| National origin | Germany |
| Manufacturer | Dornier |
| Designer | Claudius Dornier |
| First flight | 7 May 1929 (Do K1) |
| Number built | 3 |
The Dornier Do K was a German commercial passenger and freight monoplane designed by Claudius Dornier and built by Dornier Flugzeugwerke.[1] Only three prototypes of different designs were built and the type was not a commercial success.[1]
Contents
Design and development
Do K1
The first Dornier Do K was the K1 which first flew on 7 May 1929.[1] The K1 was a conventional braced high-wing monoplane powered by a single nose-mounted 510 hp (380 kW) licence-built Bristol Jupiter VI radial engine and had a conventional landing gear with a tail skid.[1] The square section fuselage had an enclosed cockpit for two with a cabin behind for freight or eight passengers.[1] Test flights showed that performance was poor and the aircraft was re-designed.[1]
Do K2
The Do K2 flew in December 1929 with similar wings and fuselage but had a changed landing gear and four 240 hp (179 kW) Gnome-Rhone Titan radial engines.[1] The four engines were strut mounted on each side of the fuselage in tandem pairs, one in tractor configuration and the other as a pusher.[1] Although the aircraft had an increase in available power the performance was little improved on the K1.[1]
Do K3
The K3 was a complete rethink of the design, the braced wing was replaced with a cantilever wing of larger span.[1] The fuselage was changed to oval and stretched for two extra passengers and the tail skid was replaced with a tail wheel and the main units were enclosed in fairings.[1] The four engines were in the same tandem arrangement as the K2 but located lower on the fuselage and changed to 305 hp (227 kW) Walter Castor radial engines.[1] The performance was greatly improved but still provoked little interest and no others were built.[1]
Specifications (Do K3)
Data from [1] The Illustrated Encyclopedia of Aircraft
General characteristics
- Crew: 2
- Capacity: 10
- Length: 16.65 m (54 ft 7½ in)
- Wingspan: 25 m (82 ft 0¼ in)
- Height: 4.55 m (14 ft 11¼ in)
- Wing area: 89 m2 (958.02 ft2)
- Empty weight: 4265 kg (9403 lb)
- Gross weight: 6200 kg (13669 lb)
- Powerplant: 4 × Walter Castor radial piston engine, 227 kW (305 hp) each
Performance
- Maximum speed: 230 km/h (143 mph)
- Range: 800 km (497 miles)
- Service ceiling: 6000 m (19685 ft)
References
- Notes
- Bibliography
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External links
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