Dornier Do-R

The Dornier Do R Superwal was a German flying boat airliner of the 1920s.

The Do R was a larger development of the Do J, with a larger high-mounted strut-braced monoplane wing and longer fuselage.

All but the first three built also had four engines, in place of the Do J’s two.

The Do R could carry 19 passengers in two cabins;

11 in the forward cabin and eight in the rear.

Variants

R2 

 Early version with two Rolls-Royce Condor III inline engines

R4 

Definitive version with four engines in two tractor-pusher pairs

R4 Gas 

With Gnome et Rhône-built Bristol Jupiter radial engines

R4 Nas 

With Napier Lion inline engines

R4 Sas 

With Siemens-built Bristol Jupiter radials

R4 Cas 

With Pratt & Whitney Hornet radials

Specifications

Crew

Four

Capacity

19 passengers

Length

24.60 m (80 ft 9 in)

Wingspan

28.60 m (93 ft 10 in)

Height

6.00 m (19 ft 8 in)

Wing area

137.0 m2 (1,474 sq ft)

Empty weight

9,850 kg (21,720 lb)

Gross weight

14,000 kg (30,900 lb)

Powerplant

4 × Siemens-built Bristol Jupiter VI , 360 kW (480 hp) each

Performance

Maximum speed

210 km/h (130 mph, 110 kn)

Range

1,500 km (930 mi, 810 nmi)

Service ceiling

1,500 m (4,900 ft).