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Short Admiralty Type 74 Aircraft Information

Short Admiralty Type 74

Admiralty Type 74

Manufacturer: Short Brothers
Designed by: Horace Short
First flight: 4 January 1914
Introduced: 1914
Primary user: Royal Navy
Produced: Eastchurch
Number built: 7
Developed from: Short Admiralty Type 42

The Short Admiralty Type 74 was a single-engined biplane tractor seaplane with non-folding wings, which saw service with the Royal Naval Air Service during the First World War.

Design and development

The Type 74 incorporated some of the innovations Horace Short had introduced on the Short S.42, including manganese-steel tube struts instead of wood. In addition to the two main rubber-sprung floats below the fuselage and the single tail float, it also had smaller floats attached below the tips of the lower wing. Ailerons were mounted on the upper wing only, the latter extending beyond the span of the lower wing. The extensions were braced by diagonal struts to the lower wing-tips.

Since it was intended for use as a coastal patrol seaplane operating from coastal stations, there was no requirement for the Type 74 to have folding wings.

The Type 74 was powered by a 100 hp (74.6 kW) Gnxme engine, which provided a maximum flight duration of 5 hours.

Operational history

In 1913 the Royal Navy ordered seven 100 hp biplane seaplanes from Shorts, which were assigned the company's serial numbers 69-75. The first of these flew on 4 January 1914, piloted by Gordon Bell, Chief Test Pilot at Shorts. He was accompanied on this first flight by Charles Richard Fairey (later Sir Richard Fairey), who left Shorts in 1915 to found the Fairey Aviation company. When this first aircraft was delivered to the Royal Navy air station on the Isle of Grain it received the Navy's serial number 74, so this and the remaining 6 aircraft from the batch (Navy numbers 74-80) were therefore known as the Admiralty Type 74 according to the rules in use at the time.

Of the seven aircraft, four (including Naval nos. 75 and 79) were dispatched to the air station at Dundee, the other three remaining at the Grain air station. The Dundee aircraft took part in the 1914 Royal Fleet Review off Spithead as part of a contingent of 17 seaplanes and four airships.

Operators

United Kingdom

Royal Naval Air Service

Specifications

Data from Barnes C.H. & James D.N. Shorts Aircraft since 1900. London (1989): Putnam. pp. 560. ISBN 0-85177-819-4.

General characteristics

Crew: 2
Length: 39 ft in (11.9 m)
Wingspan: 57 ft in (17.35 m)
Height: ()
Wing area: 580 ft (54 m)
Empty weight: 2,100 lb (952 kg)
Loaded weight: 2,700 lb (1,225 kg)
Max takeoff weight: lb (kg)
Powerplant: 1x Gnxme, 100 hp (74.6 kW)

Performance

Maximum speed: 65 mph (104.6 km/h)
Range: mi (km)
Service ceiling: ft (m)

Bibliography

Barnes, C.H.; James D.N. (1989). Shorts Aircraft since 1900. London: Putnam. pp. 560. ISBN 0-85177-819-4.

Short Admiralty Type 74 Pictures

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Source: WikiPedia

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