Antonov RF-7

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Antonov RF-7
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Type: Glider
Design country:

Soviet Union 1923Soviet Union Soviet Union

Manufacturer:

Antonov

First flight:

1938

Number of pieces:

5

The Antonov RF-7 ( Russian Антонов РФ-7 ) was a Soviet high-performance glider from the second half of the 1930s.

development

The self-supporting shoulder wing was designed in 1937 by Oleg Konstantinowitsch Antonow . The first flight took place in 1938. The aircraft was made entirely of wood with plywood planking and was equipped with a 120 liter water tank behind the pilot's seat to improve the speed polar in strong thermals . The wing was in three parts, with the middle wing having two and the outer wing having a spar . The profile was a ZAGI R-III. The undercarriage wheel was designed to be retractable. The type was only built in small numbers. The designer borrowed the abbreviation RF from the greeting of the German Red Front Fighters Association , Rot Front (Рот Фронт). The RF-7 was suitable for aerobatics .

Antonov developed the A-9 from the RF-7 after the war , which also achieved some top performances.

Records

With the RF-7, Olga Klepikowa set a world record in free cross-country flight over 380 kilometers on June 1, 1939 . On July 6, the record was extended to 749.203 km, it was not exceeded until 1951. Boris Kimmelmann set a world record in target distance flight with a return to the starting point over 342.370 km with this type on July 23, 1939 in Tula .

Technical specifications

Parameter Data
span 16.24 m
length 6.40 m
height 1.40 m
Wing area 11.86 m²
Wing extension 22.2
Empty mass 245.0 kg
Takeoff mass 325.0 kg
Wing loading 27.0 to 37.0 kg / m²
Best glide ratio 30th
Slightest sinking 0.62 m / s
Minimum speed 70 km / h
permissible speed maximum 250 km / h

literature

  • Gerhard Wissmann: Adventure in wind and clouds-The history of gliding , transpress, Berlin 1988, ISBN 3-344-00275-9

Individual evidence

  1. ^ Rudolf Höfling: Antonow. Airplanes since 1946. Motorbuch, Stuttgart 2013, ISBN 978-3-613-03518-8 , p. 9
List of aircraft types made by Antonov
Passenger aircraft:

An-10 • An-24 • An-28 • An-74 • An-140 • An-148 • An-158 • An-174 • An-180 • An-218 • An-318

Transport aircraft:

An-2 • An-3 • An-4 • An-8 • An-12 • An-14 • An-20 • An-22 • An-26 • An-32 • An-38 • An-50 • arrival 70 • An-72 • An-74 • An-112 • An-124 • An-132 • An-178 • An-204 • An-225 • An-325

Reconnaissance and surveillance aircraft:

An-6 • An-30 • An-71 • An-88

Test aircraft:

OKA-38 • An-181

Gliders:

A-1 • A-2 • RF-7 • A-7 / RF-8 • A-9 • A-10 • A-11 • A-13 • A-15 • A-40