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词条 Bratukhin B-5
释义

  1. Development

  2. Variants

  3. Specifications (B-10)

  4. See also

  5. References

     Notes  Bibliography 
name=Bratukhin B-5 image= caption=

}}{{Infobox Aircraft Type

type=Transport helicopter national origin=Soviet Union manufacturer=Bratukhin designer= first flight=1947 introduced= retired= status= primary user= number built=1 (B-5)
1 (B-9)
1 (B-10)
developed from= variants with their own articles=Bratukhin B-11
}}

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

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. Each engine was housed in a pod on an outrigger with the related rotor above. 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.

An air ambulance variant, the Bratukhin B-9 was built but was abandoned without being flown.[1] 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). 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.[1] A variant with an improved performance was built as the Bratukhin B-11.

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)

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|eng1 number=2
|eng1 name=Ivchenko AI-26GVF)
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See also

{{aircontent
|see also=
|related=
  • Bratukhin G-4
  • Bratukhin B-11

|similar aircraft=
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  • List of rotorcraft

}}

References

Notes

1. ^Gunston 1995, p.64.

Bibliography

{{refbegin}}
  • {{Cite book|author=Gunston, Bill|authorlink =Bill_Gunston|title=The Osprey Encyclopedia of Russian Aircraft from 1875 - 1995|publisher=Osprey Aerospace |location=London|year=1995|isbn= 1-85532-405-9}}
  • {{cite book |last= Nemecek |first= Vaclav |title=The History of Soviet Aircraft from 1918 |year=1986 |publisher=Willow Books |location=London |pages= |isbn=0-00-218033-2}}
  • {{cite book |last= |first= |authorlink= |coauthors= |title= The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985)|year= |publisher= Orbis Publishing|location= |issn=|pages=}}
{{refend}}

5 : Soviet military utility aircraft 1940–1949|Military helicopters|Abandoned military aircraft projects of the Soviet Union|Bratukhin aircraft|Soviet helicopters 1940–1949

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