Beriev Be-8

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Be-8
Role Airliner
Manufacturer Beriev
First flight 3 December 1947[1]
Status Did not enter mass-production
Number built 2

The Beriev Be-8 (USAF/DoD reporting name "Type 33",[2] NATO reporting name "Mole"[3]), was built by the Soviet Beriev OKB in 1947. It was a passenger/liaison amphibian aircraft with a layout similar to the Be-4 but substantially larger and heavier, it was a single engined parasol winged aircraft, with the wing installed on a thin pylon and a pair of short struts. Compared to the Be-4, the Be-8 was equipped with retractable landing gear, with cockpit and passenger cabins heated by an engine exhaust heat exchanger; the Be-8 was intended as a civil aircraft and carried no armament. First flight was on 3 December 1947, demonstrating good performance and of the two prototypes, one was demonstrated during the 1951 Soviet Aviation Day at Tushino.

One of Be-8 was equipped with hydrofoils, developed at TsAGI; these "Underwater Wings" were installed on landing gear struts and raised the aircraft above the water, well before the aerodynamic lift could support the aircraft. As a result, takeoff was much easier and imposed less punishment on the hull from the waves. Despite being very effective during take-off, the hydrofoils resulted in increased drag and a reduction in maximum airspeed. Construction of retractable hydrofoils was not ready, and the concept did not find practical applications.

Specifications (Be-8)[edit]

Data from The Osprey Encyclopedia of Russian Aircraft 1875–1995[1]

General characteristics

  • Crew: 2
  • Capacity: 6 passengers
  • Length: 13.0 m (42 ft 8 in)
  • Wingspan: 19.0 m (62 ft 4 in)
  • Wing area: 40 m2 (430 sq ft)
  • Empty weight: 2,815 kg (6,206 lb)
  • Gross weight: 3,624 kg (7,990 lb)
  • Fuel capacity: 352 kg (776 lb)
  • Powerplant: 1 × Shvetsov ASh-21 seven-cylinder air-cooled radial engine, 520 kW (700 hp)
  • Propellers: 3-bladed VISh constant speed, 3 m (9 ft 10 in) diameter

Performance

  • Maximum speed: 266 km/h (165 mph; 144 kn) at 1,800 m (5,900 ft)
  • Cruise speed: 220 km/h (137 mph; 119 kn)
  • Range: 1,205 km (749 mi; 651 nmi)
  • Service ceiling: 5,500 m (18,000 ft)

References[edit]

  1. ^ a b Gunston 1995, p. 50.
  2. ^ "Designations of Soviet and Russian Military Aircraft and Missiles". Retrieved 20 December 2014.
  3. ^ "Designations of Soviet and Russian Military Aircraft and Missiles". Retrieved 20 December 2014.