Dornier Do-Y

 

1st Flight 1931

The Dornier Do Y was a German bomber of the 1930s, the second bomber design by Dornier Flugzeugwerke.

Design on the aircraft began in 1930, to follow up from the other Dornier bomber prototype, the Dornier Do P.

The first aircraft flew on 17 October 1931.

It was a shoulder-wing monoplane of all-metal construction with fixed tail wheel landing gear, similar to the Do P, however this model had three engines instead of four.

Specifications

Crew: 4

Length: 18.2 m (59 ft 9 in)

Wingspan: 26.82 m (88 ft 0 in)

Height: 6.3 m (20 ft 8 in)

Wing area: 108.8 m2 (1,171 sq ft)

Empty weight: 5,700 kg (12,566 lb)

Gross weight: 8,500 kg (18,739 lb)

Fuel capacity: 2,090 l (550 US gal; 460 imp gal) fuel in two wing tanks; 210 l (55 US gal; 46 imp gal) oil in three tanks

Powerplant: 3 × Gnome-Rhône 9Kers 9-cylinder air-cooled radial piston engines, 450 kW (600 hp) each at 4,050 m (13,290 ft)

Propellers: 3-bladed metal propellers

Performance

Maximum speed: 300 km/h (190 mph, 160 kn) at 4,000 m (13,000 ft)

Cruise speed: 250 km/h (160 mph, 130 kn) at 4,000 m (13,000 ft)

Landing speed: 105 km/h (65 mph; 57 kn)

Range: 1,500 km (930 mi, 810 nmi)

Service ceiling: 8,300 m (27,200 ft) service ceiling

Absolute ceiling: 8,800 m (28,900 ft)

Rate of climb: 2.7 m/s (530 ft/min)

Time to altitude: 4,000 m (13,000 ft) in 12 minutes 30 seconds

Wing loading: 78 kg/m2 (16 lb/sq ft)

Power/mass: 0.15838 kW/kg (0.09634 hp/lb)

Armament

Guns: 5x machine guns in nose, dorsal and ventral positions

Bombs: 12 × 100 kg (220 lb) bombs carried internally in the fuselage.

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