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Home > RWD-7

1 Development

The RWD-5 was constructed by the RWD team of Stanislaw Rogalski, Stanislaw Wigura and Jerzy Drzewiecki in Warsaw. It was based upon their earlier designs, especially the RWD-2 and RWD-4 . The RWD-7 was meant to be a record plane, so it had a more powerful engine, while its mass was reduced. From its predecessors, it took the same fish-shaped fuselage without a direct view towards forward from the pilot's seat.

The only RWD-7 built (registration SP-AGH) was flown in July 1931 by its designer Jerzy Drzewiecki. On August 12, 1931, J. Drzewiecki and J. Wedrychowski established an international speed record of 178 km/h (111 mph) in the light tourist plane class, (below 280 kg (616 lb) empty weight). On September 30, 1932, J. Drzewiecki and Antoni Kocjan set a height record of 6,023 m (19,755 ft).

The RWD-7 was known for its extremely short take-off run: with a single crew member only 18 m (59 ft), with two crew members, 30 m (98 ft).

2 Description

Wooden construction sport plane, conventional in layout, with high-wings, canvas and plywood covered. Crew of two, sitting in tandem, pilot in the rear cab. The crew cabs were open on the sides. 5-cylinder Armstrong Siddeley Genet II radial engine, 56 kW (75 hp). Two-blade wooden propeller. Conventional landing gear, with a rear skid.

3 Specifications

3.1 General Characteristics

• Crew: Two
• Length: 9.8 m (32 ft 2 in)
• Wingspan: 6.3 m (20 ft 8 in)
• Height: 2.0 m (6 ft 7 in)
• Wing area: 13.60 m² (146 ft²)
• Empty: 246 kg (541 lb)
• Loaded: 440 kg (968 lb)
• Maximum take-off: kg (lb)
• Power plant: 1x Armstrong Siddeley Genet II radial engine, 56 kW (75 hp)

3.2 Performance

• Maximum speed: 186 km/h (116 mph)
• Range: 260 km (163 miles)
• Service ceiling: 6,000 m (19,680 ft)
• Rate of climb: 372 m/min (1,220 ft/min)
• Wing loading: 32 kg/m² (6.6 lb/ft²)
• Power/Mass: 0.23 kW/kg (0.08 hp/lb)

4 External links

• Photo of J. Drzewiecki by RWD-7 on the Polish Wikipedia

5 Related Content

Related Development:

Comparable Aircraft:

Designation Sequence:

RWD-7 -

Politics	Business	Finance

Topics: RWD-7 Rwd-7 Crew Plane Drzewiecki Rwd-4 Engine 1931 Record...

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