Darschavna Aeroplanna Rabotilnitsa

DAR workshop 1922

With Darzhavna Aeroplanna Rabotilnitsa ( DAR ; ДАР; Bulgarian Държавната аеропланна работилница , German State Plane Workshop ) state is Bulgarian aircraft industry referred 1922-1945.

history

The only copy of the DAR-4

DAR-8A, 1938

Similar to the German Empire through the Treaty of Versailles , aviation in Bulgaria was severely restricted after the First World War through the Treaty of Neuilly-sur-Seine . Civil aviation was only allowed with weakly motorized aircraft, while military aviation was completely prohibited. During the First World War, Bulgaria obtained the aircraft it used exclusively from allied governments, mainly from the German Reich. There was no aviation industry of its own. An aircraft repair shop had only been set up at the Boschurishche airfield (Bulgarian Божурище), twenty kilometers west of Sofia. There, from 1920 to 1921, parts of German aircraft that had been destroyed by order of the Allied Control Commission were built into the first two aircraft built in Bulgaria.

The actual hour of birth of Bulgarian aircraft construction struck on April 1, 1922 with the establishment of the Aviation Department in the Ministry of Communications, Telecommunications and Telegraphs . The workshop in Boschurishche was chosen as the base. On July 15, 1924, the department was expanded to become the Aviation Directorate . In order to advance aircraft construction in Bulgaria as quickly as possible, despite the lack of its own designers, the government signed a group of German aircraft manufacturers under the direction of Hermann Winter . This group arrived in Sofia in 1925. Their first aircraft type was a copy of the German type DFW CV as DAR Usunow U-1. Two Albatros C.III (as DAR-2) emerged from parts of the destroyed aircraft. The group's first in-house development was the DAR-1 trainer aircraft, 1926 of which were built and flown until the early 1940s. The DAR-3 reconnaissance aircraft, the first DAR military aircraft, was built in 1929 and was still in service during World War II .

In 1931 the Winter Group developed the three-engine DAR-4 transporter, the first multi-engine Bulgarian aircraft, of which only a prototype was built. With the construction, Winter was supported from the beginning by Tsvetan Lazarow . In 1931 Winter left DAR and Lazarov took his place. Another designer was Kiril Petkov. A few less successful designs followed, of which only the two-seater DAR-10F bomber designed by Lazarow is said to have gone into very limited production in 1941. The last model was a prototype of the DAR-11 fighter plane. After the end of the Second World War, the DAR was dissolved. A little later Lazarow created the 160 units of the training aircraft LAZ-7 for the Bulgarian Air Force , but it was built in the newly established State Aircraft Factory (DSF) in Lovech.

Start-up

The private company DAR-Aircraft was founded in Sofia in 1996 with the aim of developing and building microlight aircraft . Today the DAR team consists of four qualified engineers - Tony Iliew (born 1968), Wesselin Walkanow (born 1957), Georgi Dimantschew (born 1957), Colonel Svilen Ivanov (born 1949) and the qualified tech . Valentin Angelow (born 1958). The young company's first project was a replica of the DAR-1 - a 15% smaller copy of the legendary Bulgarian aircraft DAR-1.

Technical specifications

template	Construction year	Engine	Power [kW / PS]	Span [m]	Length [m]	Empty weight [kg]	Takeoff weight [kg]	v _max [km / h]	v _trip [km / h]	Summit height [m]	Flight time [h: min]
DAR-U1 ( DFW CV )	1926	Benz Bz IV	162/220	13.16	8.95	1155	1585	170	150	5000	5:30
DAR-2 ( Albatros C.III )		Mercedes D III	118/160	11.37	8.33	945	1380	160	120	3600	5:30
DAR-1		Walter NZ-60	45/60	8.90	6.25	405	640	135	-	3000	3:30
DAR-1A	1928	Walter Vega	63/85	8.90	6.35	409	660	150	120	3500	3
DAR-3	1930	Lorraine-Dietrich 12	294/400	11.90	9.45	1440	1910	205	-	-	-
DAR-3	1931	Gnôme et Rhône Jupiter 9AKX	- / 353	11.90	9.17	1440	1910	221	180	6500	3:50
DAR-4		3 × Walter Mars	3 × 107/145	14.00	10.20	1330	2170	195	145	4500	4th
DAR-5		Walter Titan	162	7.50	6.65	680	1050	180	160	> 6000	4:40
DAR-7	1930	Gnôme et Rhône Jupiter VI	- / 353	8.80	7.00	795	1330	280	-	8750	-
DAR-8	1935	Walter Major 4	95.6 / 130	9.47	7.05	525	814	178	160	4500	-
DAR-8	1935	Walter Mars	106.6 / 145	9.12	6.56	535	824	190	160	6000	-
DAR-10	1941	Fiat A.74 RC38	715/960	12.65	9.83	2030	3420	454	285	-	-
DAR-21 Vector	2000	Hirth 2740	36.5 / 50	8.42	5.75	246	450	180	115	3000	-
DAR-23 accent	2001	Rotax 503	38/52	8.65	5.75	185	385	120	100	3000	-

Types (chronological)

Uzunow U-1 , Bulgarian Узунов У-1 ( DFW CV ): training aircraft, named after a captain who crashed in 1925
DAR-2 : created from parts of destroyed Albatros C.III
DAR-1 : training aircraft , first in-house construction
DAR-3 : Reconnaissance aircraft , also known as Garwan ("crow") (similar to the French Potez 25 )
DAR-4 : Airliner for four passengers, only one prototype built
DAR-5 : Fighter training aircraft
DAR Zdrawka : glider , two pieces built
DAR-6 : trainer aircraft
DAR-7 : Fighter aircraft, project only
DAR-8 : Sports and training aircraft, twelve pieces built
DAR-9 : Licensed production of the German Fw 44 "Stieglitz"
DAR-10 : Dive fighter , serial production controversial
DAR-11 Lyastowitza (Schwalbe, Avia B.135 ): Fighter aircraft, last type built by the old DAR
DAR-21 Vector, UL aircraft, copy of the Piper J-3 "Cub".