Products
The ABC radial aero engines of the World War I period were extremely advanced for their time, and were initially thought to be very promising indeed. Unfortunately they were all more or less plagued by problems – and although a number of types for the Royal Air Force were designed around ABC engines (especially the ill-fated Dragonfly) none of these types were to see squadron service with the RAF.
ABC also made a large number of engines for electrical generators and other purposes – mostly with a flat twin cylinder layout and unusual exhaust-over-inlet valve configuration. These smaller ABC engine have the distinction of being possibly the first airborne APUs- the Coastal class blimp (first flown in 1916) had a 1.5-horsepower unit installed to provide electricity for the onboard wireless set, whilst a similar engine was used to power the searchlight of the Supermarine Nighthawk 'Zeppelin killer' of 1917.
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