PTO-4 | |
---|---|
РТО-4А | |
Role | Trainer |
Manufacturer | Aviotöökoda, Tallinn |
Designer | Voldemar Post, Richard Tooma and Otto Org |
Introduction | 1938 |
Retired | 1944 |
Primary user | Estonian Air Force Luftwaffe |
Produced | 1938 |
Number built | 8 |
The PTO-4 was an Estonian-designed military training aircraft of World War II.
In 1938, the Estonian aviation engineers Voldemar Post, Rein Tooma and Otto Org, previously responsible for the PON-1 trainer, designed and built the PTO-4 training aircraft. [1] It was a two-seat low-winged monoplane powered by a De Havilland Gypsy of 120 hp, with a fixed undercarriage that could be fitted with wheels or skis. [2] The aircraft could fly at a maximum speed of 245 km per hour and had a ceiling of 5,000 meters. [3] On 12 October 1938, the PTO-4 was taken into service of the Air Force. [4]
The Estonian Air Force received two PTO-4s (serial numbers 161 and 162), one with an open cockpit and the other an enclosed cockpit. [1] Six examples were in civil use, [5] of which five were used by the Eesti Aeroklubi (EAK), a flying club controlled by the Estonian Military. [1]
Four examples surviving from the Soviet occupation of Estonia (1940–41) were operated by the German Luftwaffe, being operated by a unit manned by Estonian volunteers (initially called Sonderstaffel Buschmann and later 1./SAGr.127) based at Reval-Ülemiste airfield. They were operated as training and liaison aircraft as well for coastal patrol over the shores of the Baltic. [6]
Related development
Related lists
The Miles M.14 Magister is a two-seat monoplane basic trainer aircraft designed and built by the British aircraft manufacturer Miles Aircraft. It was affectionately known as the Maggie. It was authorised to perform aerobatics.
The Henschel Hs 126 was a German two-seat reconnaissance and observation aircraft of World War II that was derived from the Henschel Hs 122. The pilot was seated in a protected cockpit under the parasol wing and the gunner in an open rear cockpit. The prototype aircraft frame was that of a Hs 122A fitted with a Junkers engine. The Hs 126 was well received for its good short takeoff and low-speed characteristics which were needed at the time. It was put into service for a few years, but was soon superseded by the general-purpose, STOL Fieseler Fi 156 Storch and the medium-range Focke-Wulf Fw 189 "flying eye".
The Bücker Bü 131 Jungmann was a German 1930s basic training aircraft which was used by the Luftwaffe during World War II.
The Junkers Ju 86 was a German monoplane bomber and civilian airliner designed in the early 1930s, and employed by various air forces on both sides during World War II. The civilian model Ju 86B could carry ten passengers. Two were delivered to Swissair and five to Deutsche Luft Hansa. In addition a single civilian Ju 86Z was delivered to Sweden's AB Aerotransport.
The RWD 8 was a Polish parasol wing monoplane trainer aircraft produced by RWD. It was used from 1934 to 1939 by the Polish Air Force and civilian aviation.
The Sopwith 1+1⁄2 Strutter was a British single- or two-seat multi-role biplane aircraft of the First World War. It was the first British two-seat tractor fighter and the first British aircraft to enter service with a synchronised machine gun. It was given the name 1+1⁄2 Strutter because of the long and short cabane struts that supported the top wing. The type was operated by both British air services and was in widespread but lacklustre service with the French Aéronautique Militaire.
The Avro 626 is a single-engined British biplane trainer aircraft produced by Avro during the (1918-1939) inter-war period.
The Arado Ar 66 was a German single-engined, two-seat training biplane, developed in 1933. It was also used for night ground-attack missions on the Eastern Front. It was engineer Walter Rethel's last design in collaboration with Arado, before Walter Blume, assigned as Arado Flugzeugwerke's chief design engineer in 1933, took over the bulk of the Arado firm's design duties.
The Short Admiralty Type 184, often called the Short 225 after the power rating of the engine first fitted, was a British two-seat reconnaissance, bombing and torpedo carrying folding-wing seaplane designed by Horace Short of Short Brothers. It was first flown in 1915 and remained in service until after the armistice in 1918. A Short 184 was the first aircraft to sink a ship using a torpedo, and another was the only British aircraft to take part in the Battle of Jutland.
The Heinkel He 50 was a German World War II-era dive bomber, originally designed for the Imperial Japanese Navy. Serving in Luftwaffe prewar dive-bombing units, the He 50 served until almost the end of World War II as a night harassment bomber.
The Estonian Air Force is the aviation branch of the Estonian Defence Forces. The air force traces its history to 1918, and was re-established in its current form in 1991.
The Arado 95 was a single-engine reconnaissance and patrol biplane designed and built by the German firm Arado in the late 1930s. Ordered by Chile and Turkey, a number were taken over by the Kriegsmarine when World War II started.
The Gotha Go 145 was a German World War II-era biplane of wood and fabric construction used by Luftwaffe training units. Although obsolete by the start of World War II, the Go 145 remained in operational service until the end of the War in Europe as a night harassment bomber.
The Letov Š-28 was a Czechoslovak single-engined, two-seat reconnaissance aircraft. It was manufactured by Letov Kbely in a number of versions with different powerplants. The most important version was the Š-328, which was produced in relatively high quantities.
Klemm L 25, later Klemm Kl 25 was a successful German light leisure, sports and training monoplane aircraft, developed in 1928. More than 600 aircraft were built, and manufacturing licenses were sold to the United Kingdom and the United States.
The Zlín Z-XII was a Czechoslovak two-seat sports aircraft, and the first major design success by the Zlínská Letecká Akciová Společnost (Zlín) aircraft manufacturing company, after its founding in Otrokovice after the takeover by the Bata Group.
The DFW C.IV, DFW C.V, DFW C.VI, and DFW F37 were a family of German reconnaissance aircraft first used in 1916 in World War I. They were conventionally configured biplanes with unequal-span unstaggered wings and seating for the pilot and observer in tandem, open cockpits. Like the DFW C.II before them, these aircraft seated the gunner to the rear and armed him with a machine gun on a ring mount. Compared to preceding B- and C-class designs by DFW, however, the aerodynamics of the fuselage were more refined, and when coupled with more powerful engines, resulted in a machine with excellent performance.
The Stampe et Vertongen SV.5 Tornado was a military trainer aircraft designed and built in Belgium in the 1930s. It saw service with the Belgian Air Force and Latvian Air Force, and Latvian firm VEF purchased a production license, although it is uncertain whether it built any examples.
The KOD-1 was an Estonian-designed Latvian trainer aircraft built by Liepājas Kara Ostas Darbnīcas. The KOD-1 was built from 1936 until 1938 and was used as a trainer by the Latvian Aeroclub and the Aizsargi home guard.