The Viale 35 hp was a five-cylinder, air-cooled,

radial engine The radial engine is a reciprocating type internal combustion engine configuration in which the cylinders "radiate" outward from a central crankcase like the spokes of a wheel. It resembles a stylized star when viewed from the front, and is ca ...

for aircraft use designed and built in France by the Italian engine designer

Spirito Mario Viale Spirito Mario Viale (born 7 February 1882) was an Italian engineer. He was born in Turin, but did most of his important work in France and (in particular) the UK. He was an early manufacturer of aircraft engines, producing a series of 3-, 5-, and ...

, that was first run around 1910. It developed 35

horsepower Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. There are many different standards and types of horsepower. Two common definitions used today are the ...

(26 kW). Three- and seven-cylinder variants of the same engine were built, although little is known about them.Lumsden 2003, p. 231.

Applications

Bristol Babe The Bristol Babe was a British-built light single-seat biplane, intended for the private flyer and produced immediately after the First World War. Only two flew. Development The Bristol Babe was the creation of Frank Barnwell, a flying enthus ...

Avro Type D The Avro Type D was an aircraft built in 1911 by the pioneer British aircraft designer A.V. Roe. Roe had previously built and flown several aircraft at Brooklands, most being tractor layout triplanes. The Type D was his first biplane. Design ...

Avro Type F The Avro Type F was an early single seat British aircraft from Avro. On 1 May 1912 it became the first aircraft in the world to fly with a completely enclosed cabin for the pilot as an integral part of the design. Design and development It wa ...

Engines on display

A preserved Viale 35 hp engine is on display at the

Science museum in London The Science Museum is a major museum on Exhibition Road in South Kensington, London. It was founded in 1857 and is one of the city's major tourist attractions, attracting 3.3 million visitors annually in 2019. Like other publicly funded ...

. This engine is believed to be the unit that powered the sole example of the

and was later used in the prototype

Frank Barnwell Captain Frank Sowter Barnwell OBE AFC FRAeS BSc (23 November 1880 – 2 August 1938) was a Scottish aeronautical engineer. With his elder brother Harold, he built the first successful powered aircraft made in Scotland and later went on to a c ...

Specifications (Viale 35 hp)

References

Notes

Bibliography

* Lumsden, Alec. ''British Piston Engines and their Aircraft''. Marlborough, Wiltshire: Airlife Publishing, 2003. .

External links

''Flight'', October 1912 - Image of the Viale 35 hp installed in the Avro Type F monoplane
{{aeroengine-specs 1910s aircraft piston engines Aircraft air-cooled radial piston engines