PWS-26
| PWS-26 | |
|---|---|
 PWS-26 in the Polish Aviation Museum |
|
| Type: | Trainer aircraft |
| Design country: | |
| Manufacturer: | |
| First flight: |
1935 |
| Production time: |
1936-1939 |
| Number of pieces: |
310 |
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The PWS-26 was a Polish aerobatic training and training aircraft. It was developed from the PWS-16bis in 1936 and then produced by the Podlaska Wytwórnia Samolotów company until 1939 . The designer was August Bobek-Zdaniewski.
development
The single-handled, braced and only slightly staggered biplane had ailerons only in the upper wing. The fuselage, a welded tubular steel construction with wooden molding strips, was fabric-covered except for the area close to the engine, as were the surfaces and the tail unit. Of the two seats, arranged one behind the other, the front one was only accessible with the help of a large side flap. The rear one could be covered with a hood for instrument flight training . A 220 hp nine-cylinder Wright J-5 Whirlwind , built under license by PZL or Avia and clad with a long NACA hood , served as the drive . The fixed undercarriage with covered V-shaped wings and long oil-damped struts hinged to the sides of the fuselage had brakable wheels with low-pressure tires. The horizontal stabilizer, which was braced towards the fuselage and braced towards the vertical stabilizer, was adjustable for trimming .
The aircraft could also be equipped with a 7.7 mm machine gun installed rigidly in the fuselage and a suspension device for a 12 kg training bomb on each of the lower wings. The installation of a photo machine gun K-28 was also possible.
The Polish Air Force has received a total of 400 orders for the PWS-26 for use at their flying schools and civil aeroclubs. By the German attack in September 1939, 310 aircraft had been completed, a number of which fell into German hands. At least 50 were taken over by the Air Force and u. a. also used for towing and for blind flight training. Two are to be proven with the association markings 1E + PM and 1E + QK in March 1943 at the supplementary group (S) 1 in Langendiebach. An aircraft was discovered by the Poles near Stettin at the end of the war, flown from 1949 to 1953 as an SP – AIB at a Polish aeroclub and after a major overhaul, handed over to the Cracow Aviation Museum. A few more were sold to Romania along with replacement engines. The Soviets also captured a number and probably also used them. Some PWS-26s had been exported to Bulgaria and Portugal before the war.
Technical specifications
| Parameter | Data |
|---|---|
| Year of construction (s) | 1936-1939 |
| Manufacturer | PWS |
| Constructor (s) | August Bobek-Zdaniewski |
| Type | two-seat school and training aircraft |
| crew | 2 |
| span | 9.00 m |
| length | 7.03 m |
| height | 2.87 m |
| Wing area | 25.00 m² |
| Empty mass | 885 kg |
| Takeoff mass | normal 1170 kg maximum 1240 kg |
| Engine | an Avia-Wright Whirlwind J5 radial engine |
| power | 176 kW (239 hp) |
| Top speed | 201 km / h |
| Marching speed | 170 km / h |
| Rate of climb | 4 m / s |
| Summit height | 4200 m |
| Range | 460 km |
| Armament | a rigid 7.7 mm machine gun Vickers , 2 bombs weighing 12.5 kg each |
See also
literature
- Jerzy B. Cynk: Polish Aircraft 1893-1939 . Putnam & Company Ltd, London 1971.
Web links
Individual evidence
- ↑ Manfred Jurleit: PWS-26 (Poland). In: Fliegerrevue No. 7/1992, p. 44