Tupolev ANT-10 / R-7


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Tupolev ANT-10 / R-7

Under the military designation R-7, a single ANT-10 was built as a possible alternative to Polikarpov's R-5, which first flew in 1928 and went on to have a production run of 4,995 in the 1930s.

Tupolev's project was an all-metal sesquiplane. The shortage of metal was one of the factors which worked in favour of the simple wooden airframe chosen by Polikarpov. For both aircraft the BMW-VI engine was specified, due to its planned Soviet production as the Mikulin M-17.

TsAGI began design work on the R-7 in 1928, when the R-5 was already flying. Its first flight was made on 30 January 1930, flown by Mikhail Gromov. As it was not appreciably better than the R-5, the programme was discontinued six months later.

 ENGINE1 x BMW VI, 500hp
  Take-off weight2920 kg6438 lb
  Empty weight1720 kg3792 lb
  Wingspan15.2 m50 ft 10 in
  Length10.9 m36 ft 9 in
  Height3.6 m12 ft 10 in
  Wing area49 m2527.43 sq ft
  Max. speed235 km/h146 mph
  Ceiling5500 m18050 ft

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