Miroslav Hajn (21 September 1894 in

Žamberk Žamberk (; german: Senftenberg in Böhmen) is a town in Ústí nad Orlicí District in the Pardubice Region of the Czech Republic. It has about 6,000 inhabitants. In lies on the Divoká Orlice river. The town centre is well preserved and is pr ...

Austria-Hungary Austria-Hungary, often referred to as the Austro-Hungarian Empire,, the Dual Monarchy, or Austria, was a constitutional monarchy and great power in Central Europe between 1867 and 1918. It was formed with the Austro-Hungarian Compromise of ...

– 6 September 1963 in

Prague Prague ( ; cs, Praha ; german: Prag, ; la, Praga) is the capital and largest city in the Czech Republic, and the historical capital of Bohemia. On the Vltava river, Prague is home to about 1.3 million people. The city has a temperate ...

Czechoslovakia , rue, Чеськословеньско, , yi, טשעכאסלאוואקיי, , common_name = Czechoslovakia , life_span = 1918–19391945–1992 , p1 = Austria-Hungary , image_p1 ...

) was a chief designer at

ČKD-Praga ČKD-Praga (Českomoravská-Kolben-Daněk Prague) was a Czechoslovakian aircraft manufacturer. The company was founded in 1915 as an engine manufacturing company, under the designation Praga. The company started designing aircraft in 1930–31 w ...

, one of the largest engineering companies in the former

Czechoslovakia , rue, Чеськословеньско, , yi, טשעכאסלאוואקיי, , common_name = Czechoslovakia , life_span = 1918–19391945–1992 , p1 = Austria-Hungary , image_p1 ...

and today's

Czech Republic The Czech Republic, or simply Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The ...

. Hajn was first a founder and chief designer at

Avia Avia Motors s.r.o. is a Czech automotive manufacturer. It was founded in 1919 as an aircraft maker, and diversified into trucks after 1945. As an aircraft maker it was notable for producing biplane fighter aircraft, especially the B-534. Avia ...

, along with

Pavel Beneš Pavel Beneš (14 June 1894 in Prague - 31 May 1956 in Prague) was a chief designer at ČKD-Praga, one of the largest engineering companies in the former Czechoslovakia and today's Czech Republic. Beneš was first a founder and chief designer at Avi ...

, in 1919. The two began repairing planes in a workshop within the complex of an old sugar factory in

. One year later, they designed their first two-seater plane, the

Avia BH-1 The Avia BH-1 was a two-seat sports plane built in Czechoslovakia in 1920. It was the first product of the Avia company, and it was originally designated BH-1 exp. The BH-1 was a low-wing braced monoplane of wooden construction, with tailskid ...

. From 1923 to 1925, the two developed the

Avia BH-7 __NOTOC__ The Avia BH-7 was a prototype fighter aircraft built in Czechoslovakia in 1923. It was a parasol-wing monoplane developed in tandem with, and as an alternative to the BH-6, which shared its fuselage and tail design. Like the BH ...

, BH-9, and BH-11 monoplanes, launching the era of biplane fighters. The BH-11 won the

Coppa d' Italia The Children's Online Privacy Protection Act of 1998 (COPPA) is a United States federal law, located at (). The act, effective April 21, 2000, applies to the online collection of personal information by persons or entities under U.S. jur ...

prize. Three years later, their

Avia BH-21 The Avia BH-21, first flown in 1925, was a robust biplane that served an important role in securing Czechoslovak national security during the period between World War I and World War II. As well as being a competent fighter, it was also an ac ...

fighter was considered one of the world's best planes. In 1930, Hajn and Beneš came to ČKD-Praga. The first aircraft they designed was the

Praga E-39 Praga E-39/BH-39 was a Czechoslovak trainer aircraft. History This aircraft was designed by Pavel Beneš and Miroslav Hajn, engineers at the Czech aviation company ČKD-Praga in 1931. It flew for the first time in June of that year. The bipla ...

in 1931.

References

{{DEFAULTSORT:Hajn, Miroslav 1894 births 1963 deaths Czech aerospace engineers Aviation inventors Aerodynamicists Czech inventors