Dornier Do-11

The Dornier Do 11 was a German heavy bomber, developed in secret in the early 1930s.

It was originally called the Dornier F before being renamed by the Reichsluftfahrtministerium (RLM) in 1933, and was considered a heavy bomber at the time.

It came into service in 1932, a continuation of a line of bomber designs from the Dornier Do P in 1930, and the Dornier Do Y in 1931.

Variants

Do F

Prototype of the Do 11 before redesignation by the RLM.

Do 11C

First production version powered by two Siemens-Halske Sh.22B-2 radial engines.

Do 11D

Second production version with a shorter-span wing,

primarily introduced to alleviate extreme vibration of the Do 11C wings.

Specifications

Crew

Four

Length

18.8 m (61 ft 8 in)

Wingspan

26.3 m (86 ft 3 in)

Height

5.49 m (18 ft 0 in)

Wing area

107.8 m2 (1,160 sq ft)

Empty weight

5,978 kg (13,179 lb)

Max take-off weight

8,200 kg (18,078 lb)

Fuel capacity

1,545 l (340 imp gal)

Powerplant

2 × Siemens-Halske Sh.22B-2 9-cyl air-cooled radial piston engines,

485 kW (650 hp) each for take-off, 447 kW (599 hp) at 1,500 m (4,921 ft)

Propellers

4-bladed fixed pitch wooden propellers

Performance

Maximum speed

260 km/h (160 mph, 140 kn)

Cruise speed

225 km/h (140 mph, 121 kn) at 1,000 m (3,281 ft)

Range

960 km (600 mi, 520 nmi) with 1,545 l (340 imp gal) of fuel

Service ceiling

4,100 m (13,500 ft)

Armament

Guns

3 x manually aimed 7.92 mm (0.312 in) MG 15 machine guns,

1 in each of open nose, dorsal and ventral positions

Bombs

Up to 1,000 kg (2,205 lb) of bombs.