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The Beriev R-1 (known in-house as 'product R')[1] was the first Soviet turbojet-powered flying boat.

R-1
Role	Experimental flying boat Type of aircraft
National origin	Soviet Union
Manufacturer	Beriev
First flight	30 May 1952
Status	scrapped
Number built	1

Design and development

At the end of World War II, design work began on a request from the Soviet Navy for a jet-powered flying boat. Starting with the wing design of the Be-6, Beriev began in-house design work in May 1947, even before the official specifications were issued in June 1948. The specifications called for a radar-equipped aircraft with a three-man crew, capable of a speed of 800 km/h, and with a range of 2000-2500 kilometers. The aircraft was to be armed with 2,000 kg of bombs and four 20 mm cannons.

Beriev completed a mock-up by 10 June 1950, using Klimov VK-1 engines instead of the originally planned Rolls-Royce Nene engines. The first prototype was completed in November 1951. However, the prototype experienced severe vibrations and hydrodynamic instability at 165 km/hr and was nearly destroyed in testing. After much modification, flight testing began at the end of 1951. The prototype crash landed on 3 October 1953 and was again repaired.

Extensive testing continued to 1956, however, the development of land-based long-range reconnaissance aircraft put the project into jeopardy. After another crash in February 1956, the R-1 was never repaired and subsequently scrapped.[2] The R designation is believed to have stood for Reaktivnyy (jet-propelled).[1] Experience gained during the test programme with the R-1 was used in the development of the Beriev Be-10.[3]

Specifications (R-1)

Data from Beriev's Jet Flying Boats[4]

General characteristics

• Crew: 3 (pilot, navigator and gunner/radio operator)
• Length: 19.9 m (65 ft 3 in)
• Wingspan: 20 m (65 ft 7 in)
• Height: 7.1 m (23 ft 4 in)
• Wing area: 58 m² (620 sq ft)
• Airfoil: NACA 23009[5]
• Max takeoff weight: 20,300 kg (44,754 lb)
• Powerplant: 2 × Klimov VK-1 turbojet engines, 26.5 kN (5,950 lbf) thrust each

Performance

• Maximum speed: 800 km/h (500 mph, 430 kn)
• Range: 2,000 km (1,200 mi, 1,100 nmi)
• Service ceiling: 11,500 m (37,700 ft)

Armament

• Guns: 2 forward-firing 23-mm Nudelman-Rikhter NR-23 cannon, 2 tail-mounted 23-mm Shpitalniy Sh-3 cannon.
• Bombs: Maximum of 1,000 kg (2,205 lb) carried on underwing bomb racks.

See also

Related development

• Beriev Be-10

Related lists

• List of seaplanes and flying boats

References

Notes

Bibliography

На других языках

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[de] Berijew R-1

Die Berijew R-1 (russisch Бериев Р-1) war das erste strahlgetriebene Flugboot der Sowjetunion.

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- [en] Beriev R-1

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[fr] Beriev R-1

Le Beriev R-1 est un hydravion biréacteur avec coque à 2 ponts. Il fut le premier hydravion à coque équipé de turboréacteurs. Il fut utilisé pour la reconnaissance et la destruction de cibles ennemies.

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[ru] Бериев Р-1

Бериев Р-1 — экспериментальная реактивная летающая лодка, морской разведчик. Первый реактивный гидросамолёт в СССР.

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