Dornier Do 10

Do 10
Role	Fighter aircraft
National origin	Germany
Manufacturer	Dornier Flugzeugwerke

The Dornier Do 10 was the name given by the Reichsluftfahrtministerium (RLM) of a pre-World War II German aircraft. The aircraft has a complicated history due to renaming and the use of three different engines with correspondingly different specifications.

Developed in 1931, it was originally called Do C1, with one variant being the C4. It was the first aircraft of the C model line and was followed by the C2. It most likely started as the C1 and performance numbers suggest it tested BMW engines, and then Hispano-Suiza powerplants. Later that year possibly renamed C4 with the testing of the Rolls-Royce engine. The tilted engine and propeller position was one of the key features it tested along with multiple engine use. In any case, it was a two-seat parasol-wing monoplane intended to be used as a fighter. Two prototypes were made both in 1931.

Specifications

Type	Two seat fighter
Engine	Rolls-Royce Kestrel IIIS	BMW VI 7.3 (703)	Hispano-Suiza 12 Xbrc (Ybre?)
Power	391 kW (525 hp)	485 kW (650 hp)	515 kW (690 hp)
Dimensions	Length: 10.60 m (34 ft 9 in) Height: 4.30 m (14 ft 1 in) Wingspan: 15.00 m (49 ft 3 in) Wing area: 32.40 m² (349 ft²)	Length: 10.50 m (34 ft 5 in) Height: 4.44 m (14 ft 7 in) Wingspan: 15.00 m (49 ft 3 in) Wing area: 32.40 m² (349 ft²)	Length: 10.60 m (34 ft 9 in) Height: 4.30 m (14 ft 1 in) Wingspan: 15.00 m (49 ft 3 in) Wing area 32.40 m² (349 ft²)
Weights	Empty: 1,600 kg (3,530 lb) Loaded: 2,300 kg (5,070 lb) Max takeoff: 2,300 kg (5,070 lb)	Empty: 2,200 kg (4,850 lb) Loaded: 2,640 kg (5,820 lb) Max takeoff: 2,640 kg (5,820 lb)	Empty: 1,600 kg (3,530 lb) Loaded: 2,640 kg (5,820 lb)
Performance	Max. speed: 278 km/h (150 kn) at sea level Max. speed: 315 km/h (170 kn) at 3,500 m (11,500 ft) Range: 800 km (430 nmi) Service ceiling: 9,100 m (29,900 ft) Wing load: 71.0 kg/m² (14.5 lb/ft²)	Max. speed: 288 km/h (156 kn) at sea level Cruising speed 250 km/h (135 kn) Climb to 1000 m: 1 min 54 s Climb to 5000 m: 12 min 48 s Initial climb rate : 8.80 m/s (1730 ft/min) Range: 800 km (430 nmi) Service ceiling: 7,500 m (24,600 ft) Wing load: 81.0 kg/m² (16.6 lb/ft²)	Max. speed: 272 km/h (147 kn) at sea level Max. speed: 318 km/h (172 kn) at 3500 m Range: 800 km (430 nmi) Service ceiling: 9,500 m (31,200 ft)
Armament	4 × MG 08/15 machine guns (two forward, two in rear turret)

Sources

• Luftwaffe 39-45 (Portuguese)
• Histaviation.com
• Virtual Aviation Museum

(Information on this model is difficult to come by and the nature of the relationship between C1/C4/10 is not yet totally resolved)