Tupolev R-6

Tupolev R-6 (ANT-7)
Type:	Bomb plane
Design country:	Soviet Union
Manufacturer:	Tupolev ( ZAGI )
First flight:	September 11, 1929
Commissioning:	1931
Production time:	1930 to 1935
Number of pieces:	435

The Tupolev R-6 ( Russian Туполев Р-6 ), after the initials of its designer Andrei Tupolev as ANT-7 called (АНТ-7) was a twin-engine plane from the 1930s. It was used as a reconnaissance aircraft, bomber and heavy escort fighter by the Soviet air forces .

history

In October 1926, work began on this model, where you look at also from the OKB Tupolev coming -TB 1 oriented. Of this type that were M-17 - engines adopted, however, the machine was on the whole, small and of slight constructed. On September 11, 1929, the first flight of the only built prototype with BMW VI engines took place, and in the summer of 1930 series production began in several task variants at Plant No. 22 in Moscow.

The state testing of the first series version began on October 5, 1931. Thereby strong vibrations were found on the tail unit , which could be eliminated by attaching rigid, profiled flaps to the rear of the wing center section. After 45 copies, production of the first batch was discontinued in 1932 and continued in plant No. 31 in Taganrog with the float version MR-6 ( R-6a ) until 1934.

From 1936 the R-6 was considered obsolete and retired from the first line. The planes served as large aircraft training machines until 1938. Others were used by Aeroflot as well as the "Glawsewmorput" ( Headquarters Nördlicher Seeweg ) as a civilian transport aircraft under the designation PS-7-2 M-17 and MP-6-2 M-17 . The three-seat heavy escort fighter Kr-6 and its civilian version PS-7 were produced in a small series at the Moscow plant from 1934 to 1935 .

The first flight of a Soviet aircraft over the North Pole on May 5, 1937 by a five-man crew under Commander Pawel G. Golowin with a PS-7 (registration number SSSR N-166 ) as part of the North Pole 1 polar expedition attracted international attention . The last R-6s served as transporters for the Soviet Air Force until 1944. A total of 435 pieces of this type were produced.

An improved version was developed under the direction of Vladimir Myasishchev , but there was only one copy. The structure of the R-6 was adopted for the following models ANT-8 and ANT-9 .

Technical specifications

Parameter	ANT-7 (prototype)	R-6	MR-6
Year of construction (s)	1929	1932	1932
crew	3-4
span	23.20 m
length	14.75 m	15.06 m
Wing area	80.0 m²
Wing loading	64.7 kg / m²	80.9 kg / m²	93.8 kg / m²
Empty mass	3790 kg	3855 kg	4640 kg
Payload	1383 kg	2616 kg	2860 kg
Takeoff mass	5173 kg	6471 kg	7500 kg
drive	two liquid-cooled 12-cylinder V-engines BMW VI	two liquid-cooled 12-cylinder V-engines M-17F	two liquid-cooled 12-cylinder V-engines M-17
power	537 kW (730 PS) takeoff power each 368 kW (500 PS) rated power	526 kW (715 hp) takeoff power each 368 kW (500 hp) rated power	500 kW (680 PS) takeoff power each 368 kW (500 PS) rated power
Power load	4.82 kg / kW (3.54 kg / PS)	6.15 kg / kW (4.53 kg / PS)	7.50 kg / kW (5.51 kg / PS)
Top speed	222 km / h near the ground	230 km / h near the ground, 216 km / h at an altitude of 3000 m	234 km / h near the ground, 215 km / h at 3000 m altitude
Landing speed	100 km / h	k. A.	130 km / h
Rise time	11.7 min at 3000 m	16.7 min at 3000 m	26.5 min at 3000 m
Service ceiling	5640 m	4900 m	3850 m
Range	1780 km	800 km	900 km
Armament	k. A.	five 7,62 mm MG DA 500 kg bombs type DER-7

literature

• Wilfried Copenhagen : Soviet bomb planes . Transpress , Berlin 1989, ISBN 3-344-00391-7 , pp. 126-128 .
• Wadim B. Schawrow : Aircraft constructions in the years of socialist industrialization (2) . In: Wolfgang Sellenthin (Ed.): Fliegerkalender der DDR 1980 . Military Publishing House, Berlin 1979, p. 195/196 .

Web links

Commons : Tupolev ANT-7  - collection of images, videos and audio files

• Туполев Р-6. Retrieved October 2, 2016 (Russian, history, dates, and pictures). 

Individual evidence

1. ↑ ^{a b c} Peter Korrell: TB-3 . The story of a bomber. Transpress, Berlin 1987, ISBN 3-344-00116-7 , pp. 178/179 .