Английская Википедия:Bratukhin B-5

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The Bratukhin B-5 was a prototype Soviet twin-rotor transport helicopter designed by the Bratukhin aircraft design bureau.[1]

Development

The B-5 was an improved and larger design based on the bureau's earlier G-4, a twin-rotor helicopter, with each rotor driven by an Ivchenko AI-26 radial engine.[1] Each engine was housed in a pod on an outrigger with the related rotor above.[1] The programme was delayed waiting for appropriate engines and the B-5 was not completed until 1947, it only made a few short hops before the programme was abandoned due to vibration and structural flexing.[1][2]

An air ambulance variant, the Bratukhin B-9 was built but was abandoned without being flown.[2][3] Another variant was the Bratukhin B-10 which had uprated 575 hp (429 kW) engines and was modified for use in the artillery observation role with the military designation VNP (Vosdushnii Nabludatelnii Punk - Aerial Observation Point).[2] The B-10 had three-seat for the crew, the cabin could hold three passengers or equipment. The B-10 flew in 1947 but although it did not have the wing stiffness problems of the B-54, demonstrating adequate handling like the B-5 and B-9 was also abandoned.[2][3] A variant with an improved performance was built as the Bratukhin B-11.[2]

Variants

B-5
Prototype, one built.
B-9
Prototype air ambulance variant, one built.
B-10
Prototype observation and reconnaissance variant, one built.

Specifications (B-10)

Шаблон:Aircraft specs

See also

Шаблон:Aircontent

References

Notes

Шаблон:Reflist

Bibliography

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Шаблон:Refend

  1. 1,0 1,1 1,2 1,3 Ошибка цитирования Неверный тег <ref>; для сносок orbis не указан текст
  2. 2,0 2,1 2,2 2,3 2,4 Ошибка цитирования Неверный тег <ref>; для сносок nemecek не указан текст
  3. 3,0 3,1 Gunston 1995, p.64.