Potez XXV - History

Published on: 2020-03-28
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Updated on: 2020-03-28
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Category: Airplanes
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History Construction Tally

Kraków 2020-03-28

00126b Section 1926

Lublin, Biała Podlaska Potez XXV

Reconnaissance bomber aircraft

History

Potez XXV at the airport in Krakow, Rakowice-Czyżyny. Photo of LAC
Potez XXV at the airport in Krakow, Rakowice-Czyżyny. Photo of LAC

Potez XXV with Salmson engine. Photo Wikipedia 2015
Potez XXV with Salmson engine. Photo Wikipedia 2015

The Potez XV-A2 aircraft is one of three types of airliners built by the French Henri Potez plant, used by the Polish Air Force after the Great World War. The Potez XXV aircraft was used in Poland and in Poland.

In 1924, at the Société des Aéroplanes Henry Potez company in MéauIte Somme, the French engineer engineer Henri Potez developed and built a prototype of a reconnaissance-bomber aircraft that was designated Potez XXV. The aircraft was a development of Potez XV. In the literature, the Potez XXV aircraft is also designated Potez 25. The Potez XXV aircraft has undergone many design changes compared to its predecessor. The engine was changed to a more powerful one. The plane is faster and more agile. In 1925, the Potez XXV aircraft underwent tests at the French aviation testing institute. The obtained grade was very good and there was a recommendation that the aircraft should be put into serial production.

The Potez XXV-A2 aircraft is an intelligence aircraft. The Potez XXV-B2 aircraft is a destroyer aircraft. The differences were small. A2 planes have cameras as standard, and B2 planes have various types of bomb hooks under the wings and fuselage.

In 1925, the Potez XXV made several long-haul flights: a rally around Europe at a distance of 7,400 km, a rally around the Mediterranean at a distance of 6,500 km, a rally to the Middle East at a distance of 13,080 km. This advertisement meant that the plane was eagerly bought. A total of 2,500 Potez XXV aircraft were built in France.

Potez XXV in Poland

The first plane received in France was the Potez XXV-GR rally version. It was intended for the rally to Tokyo. During the flight to Warsaw, it was crashed on 1926-05-24, during a forced landing by pilot Bolesław Orliński. Bolesław Orliński pointed out before the flight that the engine was a new and underdeveloped design. Already in France there were problems with starting the engine and its stable operation. And in fact during the flight the engine broke down.

In August 1925, Poland bought a license to manufacture Potez XXV aircraft. In Poland, Potez XXV aircraft received the Type 42 number. Because there was problems with the documentation of the previous Potez XV license, that's why engineer Ryszard Bartel went to France, then an employee of the WWS "Plane" factory in Poznań, where the Potez XXV aircraft was to be manufactured. However, it turned out that the WWS "Plane" factory did not have a suitable machine park. Ultimately, Potez XXV planes were manufactured in Lublin at "Zakłady Mechaniczne Emil Plage and Teofil Laśkiewicz" (25 copies) and in Biała Podlaska at "PWS - Podlaska Wytwórnia Planów" (125 copies). This aircraft was manufactured in Poland under license from 1928 to 1931. Ultimately, there were a total of 320 copies in Poland.

The first Potez XXV aircraft purchased in France arrived in Poland at the end of 1927. Only 16 aircraft of the planned 35 were delivered. Further copies were delivered by sea in 1928. The first copies of Potez XXV aircraft were built in Poland in 1928. The aircraft were handed over for testing at the Institute of Aviation Technical Research in Warsaw. The aircraft received a positive rating. At the same time, both factories suggested introducing modifications specific to the Polish Army. For example, a different type of map pocket, other ammo boxes. Aero wings were also introduced on the ailerons, developed by engineer Antoni Uszacki from the Podlasie Aircraft Factory (1928). These wings made it easier to control the aircraft. Gills were also mounted on Polish aircraft on the leading edge of the wings, which improved the aircraft's control at a lower speed.

In 1928, engineer Jerzy Rudlicki developed a design for the Lublin R-XVII aircraft, which is a development version of the Potez XXV aircraft equipped with a retractable landing gear.

Potez XXV had a good reputation. It had good performance and was correct in flight. Polish Potez XXV planes were painted khaki.

Three Potez XXV planes of Polish production took part in the Balkan rally from May 13, 1928 to May 23, 1928. Warsaw - Bucharest - Belgrade - Sofia - Constantinople - Iasi - Warsaw. Then, from August 2, 1928 to August 12, 1928, three Potez XXV aircraft participated in the Second Flight of Mała Ententa and Poland.

In Poland there was a problem with a sufficient number of Lorraine-Dietrich 12Eb engines, which was the main propulsion of the Potez XXV aircraft. Therefore, a Polish version of the aircraft was developed, which was powered by the PZL Bristol Jupiter VIIF star engine. Engineers benefited from the experience of PZL P.7a aircraft design that have the same engine. Reconstruction of 47 Potez XXV aircraft was carried out at the Lublin Aircraft Factory in Lublin in 1936. These aircraft were called Potez XXV Jupiter.

Potez XXV planes were used in the Polish Army in 1928-1939, and from 1936 they were replaced by PZL.23 Karaś planes. The longest Potez XXV aircraft were used at the Aviation Training Centers in Dęblin and Bydgoszcz and as a night aircraft in air regiments. Several copies of Potez XXV took part in the Defense War in 1939.

Written by Karol Placha Hetman