Beriev LL-143

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Beriev LL-143
f2
Type: Flying boat
Design country:

Soviet Union 1923Soviet Union Soviet Union

Manufacturer:

Beriev

First flight:

August 5, 1945

Production time:

1944-1945

Number of pieces:

1

The Beriev LL-143 ( Russian Бериев ЛЛ-143 ) was a Soviet flying boat of the OKB Beriev . The two-engine all-metal machine in high- wing design had gull wing wings so that the radial engines could be mounted as far away from the water as possible, and the vertical tail unit was designed twice.

The abbreviation LL-143 stands for "Letajuschtschaja lodka" (Летающая Лодка), flying boat, the digits for the first project in 1943.

development

The first considerations about the new type arose in 1943 due to the acute need for sea scouts, which was initially covered by the license construction of the US Consolidated PBY Catalina . The design basis required a range of 5000 km, a flight time of 20 hours and 4000 kg of drop armament. In December 1943, the construction of a 1: 1 scale model was completed. Initially, M-71F engines were planned as the drive, but in the end it was decided to install ASch-72. The construction of the first prototype was carried out at Plant No. 477 in Krasnoyarsk and was completed in March 1945. The plane was brought to Taganrog for testing a month later . The first flight took place on August 5, 1945 by N. Kotjakow. The flight tests were successful, but the machine was underpowered and the range was unsatisfactory. There was space in the fuselage for a two-man crew for rescue operations. The armament consisted of six machine guns in five positions. An auxiliary landing gear could be added for movement on land. The type was to be transferred to series production with minor modifications of the drive (type Asch73 with 1765 kW / 2400 PS starting power) and the armament (use of 20 mm cannons). On July 16, 1946, however, the LL-143 was destroyed by fire in the port of Taganrog. After a thorough revision of the design, the construction of a second machine began, which differed from the LL-143 in terms of motorization, equipment and armament and which formed the prototype for the Beriev Be-6 . However, due to delivery problems with the engines, it could only be completed two years later.

As the LL-144, there was still a civilian design for up to 40 passengers, but it was never realized.

Technical specifications

Parameter Data
crew 7th
length 23.00 m
height 7.45 m
span 33.00 m
Wing area 120.00 m²
Empty mass 15,104 kg
Takeoff mass normal 21,300 kg
maximum 25,104 kg
drive 2 × Schwezow ASch-72
Starting power 1,655 kW (2,250 hp) each
Top speed 401 km / h at 4,300 m
371 km / h at sea level
Landing speed 140 km / h
Range 2,800 km
Range Max. 5,100 km
Service ceiling 6,000 m
Armament 6 × 12.7 mm machine gun, 400 kg bombs,
maximum bomb load 4,000 kg (at external load stations )

literature

  • Karl-Heinz Eyermann : Flying Boats after the Second World War . In: Wolfgang Sellenthin (Ed.): German Fliegerkalender 1972 . German Military Publishing House, Berlin 1971, p. 176/177 .

Web links

Individual evidence

  1. ^ Nikolai Jakubowitsch: Berijew Be-6 - Service in all fleets in Klassiker der Luftfahrt 2/2011, pp. 20-25.