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PWS-18
The PWS-18 was a Polish trainer aircraft, used from 1937 in aviation, 1937 to 1939 in aviation, 1939 by the Polish Air Force, a modified licence variant of the British Avro Tutor. Development In 1934, the Polish government, looking for an intermediate military trainer, bought two Avro Tutor trainer aircraft together with a licence to produce the aircraft. Production was ordered in the PWS (aircraft manufacturer), PWS (''Podlaska Wytwórnia Samolotów'' - Podlasie Aircraft Factory). In 1935, Antoni Uszacki of the PWS modified the design, fitting it with a Wright R-790, Wright Whirlwind engine, produced under licence in Poland. The new engine NACA cowling, cowling was much longer than the previous Townend ring type, with a carburetor air intake below it. The wing construction was changed from metal to wooden, better fitted to PWS capabilities, and the rectangular wing tips were rounded. Also some other details were changed, such as a tailskid instead of a tailwheel. A series of 40 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avro Tutor
The Avro Type 621 Tutor is a two-seat British radial-engined biplane from the interwar period. It was a simple but rugged basic trainer that was used by the Royal Air Force as well as many other air arms worldwide. Design and development The Avro Model 621 was designed by Roy Chadwick as an Avro private venture metal replacement for the Avro 504. Conceived as a light initial pilot trainer, the biplane design featured heavily staggered equal-span, single-bay wings; the construction was based on steel tubing (with some wooden components in the wing ribs) with doped linen covering. A conventional, fixed divided main undercarriage with tailskid was used in all but the latest aircraft, which had a tailwheel. The Model 621 was powered either by a 155 hp (116 kW) Armstrong Siddeley Mongoose or Armstrong Siddeley Lynx IV (180 hp/130 kW) or IVC (240 hp/179 kW) engine; later Lynx-powered models had the engine enclosed in a Townend ring cowling. The Mong ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PWS-19
The PWS-19 was a Polish reconnaissance and bomber plane prototype of the 1930s, constructed in the PWS (''Podlaska Wytwórnia Samolotów'' - Podlasie Aircraft Factory). Development The PWS-19 was constructed in 1930 in order to replace the French-designed bombers Potez 25 and Breguet 19 in the Polish Air Force. It was a development of the PWS-17, which remained unbuilt. Main designers were Zbysław Ciołkosz and Antoni Uszacki. It was planned to be produced in two variants: reconnaissance PWS-19A2 and bomber PWS-19B2. It was a conventional design, a strutted high-wing monoplane with quite elegant silhouette, open cockpits and fixed landing gear. It was fitted with double tailfins to obtain a good field of defense fire. In 1934 Antoni Uszacki designed a smaller plane basing on the PWS-19, designated PWS U-6, with G-1620 Mors 400 hp engine. It participated in a contest for an army cooperation plane, but lost against RWD-14 Czapla and was not built. Operational histor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wright R-790
The Wright R-790 Whirlwind was a series of nine-cylinder air-cooled radial aircraft engines built by Wright Aeronautical Corporation, with a total displacement of about and around . These engines were the earliest members of the Wright Whirlwind engine family. Design and development The R-790 Whirlwind began as the Lawrance J-1, a nine-cylinder air-cooled radial developed in 1921 by the Lawrance Aero Engine Company for the U.S. Navy. The Navy was very enthusiastic about air-cooled engines, which it considered better suited for naval use than liquid-cooled ones.Wright J-5 "Whirlwind" (PDF), by Kimble D. McCutcheon, from the Aircraft Engine Historical Society Lawrance was a small company, though, and the Navy doubted it could produce enough engines for its needs. Despite urgings from th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PWS-26
The PWS-26 was a Polish advanced training aircraft, used from 1937 to 1939 by the Polish Air Force, constructed in the PWS (''Podlaska Wytwórnia Samolotów'' - Podlasie Aircraft Factory). It was the second most numerous Polish pre-war aircraft, after the RWD-8. Design and development The aircraft was a final development of a series: PWS-12, PWS-14 and PWS-16, designed in response to a Polish Air Force requirement for an advanced trainer. The chief designer was Augustyn Zdaniewski. The PWS-26 was a direct development of the PWS-16bis, sharing the same silhouette, being a more militarized variant - with strengthened construction, which allowed dive-bomber training. Contrary to its predecessors, the PWS-26 could be armed with a forward-shooting machine gun and practice bombs. It also had other improvements and was capable of aerobatics. A visual difference from the PWS-16bis were the canvas-covered struts of the landing gear. The prototype was flown in 1935. After trials, its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wright J-5B Whirlwind
The Wright R-790 Whirlwind was a series of nine-cylinder air-cooled radial aircraft engines built by Wright Aeronautical Corporation, with a total displacement of about and around . These engines were the earliest members of the Wright Whirlwind engine family. Design and development The R-790 Whirlwind began as the Lawrance J-1, a nine-cylinder air-cooled radial developed in 1921 by the Lawrance Aero Engine Company for the U.S. Navy. The Navy was very enthusiastic about air-cooled engines, which it considered better suited for naval use than liquid-cooled ones.Wright J-5 "Whirlwind" (PDF), by Kimble D. McCutcheon, from the Aircraft Engine Historical Society Lawrance was a small company, though, and the Navy doubted it could produce enough engines for its needs. Despite urgings from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trainer Aircraft
A trainer is a class of aircraft designed specifically to facilitate flight training of pilots and aircrews. The use of a dedicated trainer aircraft with additional safety features—such as tandem flight controls, forgiving flight characteristics and a simplified cockpit arrangement—allows pilots-in-training to safely advance their skills in a more forgiving aircraft. Civilian pilots are normally trained in a light aircraft, with two or more seats to allow for a student and instructor. Tandem and side by side The two seating configurations for trainer aircraft are: pilot and instructor side by side, or in tandem, usually with the pilot in front and the instructor behind. The side-by-side seating configuration has the advantage that pilot and instructor can see each other's actions, allowing the pilot to learn from the instructor and the instructor to correct the student pilot. The tandem configuration has the advantage of being closer to the normal working environment that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies of World War II, Allies and the Axis powers. World War II was a total war that directly involved more than 100 million Military personnel, personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Air warfare of World War II, Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the Atomic bombings of Hiroshima and Nagasaki, only two nuclear weapons ever used in war. World War II was by far the List of wars by death toll, deadliest conflict in hu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PWS-21
The PWS-21 was a Polish passenger aircraft for 4 passengers, built in PWS factory in 1930, that remained a prototype. Development The aircraft was developed for a contest for a successor of Junkers F-13 in LOT Polish Airlines. The first design of 1929, named PWS-21, developed by Stanisław Cywiński and Jarosław Naleszkiewicz, was a braced high-wing plane, but it was not realized because LOT demanded bigger passenger cab. The next design, named PWS-21bis, was a cantilever high-wing plane, similar to Fokker F.VIIa/1m design. The only prototype (markings SP-AEC) first flew in the spring, probably April 1930 in Biała Podlaska. Its counterpart was Lublin R-XI. The plane appeared not successful. It was too heavy, what resulted in poor speed, ceiling and range, and long take off. In 1931 it was evaluated in LOT airlines, but after a test flight it was returned to the factory. However, at that time there was its development, PWS-24 built, sharing the same lightweight wing, which w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PWS-20
The PWS-20 was a Polish single-engine high-wing 8 passenger airliner, built in the PWS factory and when it made its first flight in 1929 it became the first Polish-designed transport aircraft to fly. Development The aircraft was developed by Zbysław Ciołkosz in response to a request announced by the Polish Ministry of Communication in 1927 for an airliner to be used by LOT Polish Airlines, and was competing against a sizable number of other designs from other Polish designers, including the Stemal VII, 4 unbuilt proposals from PZL, the Lublin R-IX, and the Medwecki M.N.2. Of the designs submitted, the PWS-20 was selected as being the best design. A prototype was built and first flew on 12 March 1929 from Biała Podlaska. After brief flight testing it was bought by the Ministry of Communication for evaluation as the PWS-20T, with the T signifying transport. In 1930, following testing by LOT, the aircraft was modified with a wider undercarriage, improved windscreen, engine co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PWS-16
The PWS-16 was a biplane trainer designed and developed by Podlaska Wytwórnia Samolotów (PWS). An armed variant also entered production as the PWS-26. Development Developed from the PWS-12 and PWS-14 trainers, the PWS-16 two-seat biplane design introduced a number of improvements particularly improved ailerons. A variant designated PWS-16bis had a revised fuel system to allow inverted flight. It had also improved aerodynamics and its silhouette changed. The aircraft entered service with the Polish Air Force training units between 1933 and 1934. An improved armed version was developed as the PWS-26 and when the PWS-26 entered service in 1937, the PWS-16 was relegated to secondary duties. Variants ;PWS-16 :20 built. ;PWS-16bis :20 built. ;PWS-26 :Armed trainer variant. Operators ; *Polish Air Force ; * Aviación Nacional (20 bought through SEPEWE SEPEWE was a Polish arms industry syndicate. Established as a joint venture of the Polish government and 19 private companies of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PWS-14
The PWS-12 was a biplane trainer designed and developed by Podlaska Wytwórnia Samolotów (PWS). It entered production as the PWS-14. Development The PWS-12 was a single-engined two-seat training biplane, fit also for aerobatics, designed in 1928 by A. Grzędzielewski and August Bobek-Zdaniewski at the PWS factory. The design shared similar parts, including fuselage and engine, as a high-wing trainer fighter plane PWS-11, developed at the same time.Glass, A. (1977) The main difference was the addition of a lower wing. It was powered by a nose-mounted Skoda-built version of the Wright J-5 Whirlwind radial engine. Two prototypes and an airframe for static tests were ordered by the Aviation Department of the War Ministry in February 1928 (along with the PWS-11 prototypes). The first prototype was flown by Franciszek Rutkowski in November 1929. It was later improved - among others, a Townend ring replaced NACA cowling, and it was fitted with N-shaped struts between wings instead of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PWS-12
The PWS-12 was a biplane trainer designed and developed by Podlaska Wytwórnia Samolotów (PWS). It entered production as the PWS-14. Development The PWS-12 was a single-engined two-seat training biplane, fit also for aerobatics, designed in 1928 by A. Grzędzielewski and August Bobek-Zdaniewski at the PWS factory. The design shared similar parts, including fuselage and engine, as a high-wing trainer fighter plane PWS-11, developed at the same time.Glass, A. (1977) The main difference was the addition of a lower wing. It was powered by a nose-mounted Skoda-built version of the Wright J-5 Whirlwind radial engine. Two prototypes and an airframe for static tests were ordered by the Aviation Department of the War Ministry in February 1928 (along with the PWS-11 prototypes). The first prototype was flown by Franciszek Rutkowski in November 1929. It was later improved - among others, a Townend ring replaced NACA cowling, and it was fitted with N-shaped struts between wings instead of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
