DHC-3 Otter
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DHC-3 Otter

DHC-3 Otter

DHC-3 Otter (Otter), is a multi-purpose short take-off and landing aircraft (STOL), developed by the Canadian company "de Havilland Canada". This aircraft is based on DHC-2 BeaverAnd it is designed to perform the same tasks as its predecessor, but it has lengthened fuselage, larger scale and area of ​​the wing, as well as an increase of nearly doubled capacity. DHC-3 Otter can accommodate in its interior 11 seats. The transport-cargo variant it is able to carry up to 1020 kilogram payload.

The design of the DHC-3 Otter aircraft began in the late 1940-s. Initially, the project was called as “King Beaver”, but was later renamed “Otter”. The aircraft has the form of a monoplane with an all-metal fuselage with a highly located straight wing with two-slot flaps. The tail of the aircraft has a cross-shaped view. The chassis of the aircraft, as in the DHC-2, can have a wheeled, float, or skiing base, which allows the use of aircraft from various take-off and landing sites. On the DHC-3 Otter, the piston radial engine R-1340-S1H1-G / S3H1-G Wasp with the power of 600 hp manufactured by Pratt & Whitney was installed.

DHC-3 Otter fly

Its first flight DHC-3 made 12 December 1951 of the year. The Canadian Otter flight certificate received in November 1952 of the year. And shortly thereafter, the mass production of the aircraft began.

DHC-3 has the following modifications:

- DHC-3 Otter - BASIC version, designed for passenger transportation.

- CSR-123 Otter - transport aircraft short takeoff and landing for the Royal Canadian Air Force.

- U-1A Otter - transport aircraft for the US Army

- U-1B Otter - transport aircraft of the US Navy. Before 1962 year was named UC-1 Otter.

- Airtech Canada DHC-3 / 1000 Otter - an upgraded version of the engine with the established Polish-made PZL Kalisz ASZ-62IR.

- DHC-3-T Turbo-Otter - version of the aircraft, equipped with turboprop Pratt & Whitney Canada PT6A-34 or PT6A-27.

DHC-3 Otter inside

Also produces other modifications DHC-3 Otter.

One of the largest operators of the aircraft DHC-3 Otter has become the US Army. There was an 184 aircraft under the designation U-1A Otter. Also, the plane was delivered to the armies of Australia and India. DHC-3 in addition to transport, expeditionary and search and rescue, is popular in parachuting.

Serial production of aircraft DHC-3 Otter, continued to 1967 years. From the period of 1951 1967 466 year it was produced aircraft DHC-3. In today's time the aircraft continues to operate military, small transport companies and individuals as the transport and light passenger aircraft at short distances and in various remote regions.

Technical characteristics of the aircraft DHC-3 Otter

First flight DHC-3 Otter: 12 1951 December year

Production Years: c 1951 1967 year on year

Length: 12,75 m.

Height: 3,84 m.

Wingspan: 17,68 m.

Empty weight: 1895 kg.

Wing area: 34,84 sq.m.

Cruising speed: 225 km / h..

Maximum speed: 257 km / h..

Ceiling: 5730 m.

Range: 1500 km.

Engines: 1 PD P & W R-1340-S1H1-G / S3H1-G Wasp

Crew: 1-2 people

Number of passengers: 11 seats

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