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DH.60X Cirrus II Moth (initially known as the Moth Type X or Experimental Moth) Introduced in 1927 this variant had a slightly larger wingspan by 1 foot, increased length by 2.5 inches and decreased distance between the upper and lower wings. Powered by an uprated 80 hp (60 kW) ADC Cirrus Mark II engine, 333 built. (many were later upgraded to ...
The original Cirrus engines were all designed by Halford and built by ADC. The 65 horsepower (48 kW) Cirrus I passed its 50-hour type rating in 1925. De Havilland launched his product as the Cirrus Moth and it proved a winning combination. The engine was soon adopted for other aircraft.
As ADC began to run out of the Renault engines in 1928, Cirrus Aero Engines Limited was formed at Croydon to manufacture the Cirrus models from scratch.. Although Halford was no longer associated with it (having gone off to develop the next-generation but otherwise similar de Havilland Gipsy series), the Cirrus company continued to develop new models, with the uprated Hermes appearing in 1929.
The original ADC Cirrus-powered DH.60 retroactively became the "Cirrus Moth". As the DH.60 became more and more popular, de Havilland decided to cash in on the fame of the original by giving each of his new designs a name ending with Moth. First of them was the DH.61, a giant
The de Havilland Gipsy is a British air-cooled four-cylinder in-line aircraft engine designed by Frank Halford in 1927 to replace the ADC Cirrus in the de Havilland DH.60 Moth light biplane. Initially developed as an upright 5 litre (300 cubic inch) capacity engine, later versions were designed to run inverted with increased capacity and power.
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The Tiger Moth had a fixed conventional landing gear with a tail skid. [1] The first aircraft built ( registration G-EBQU ) first flew from Stag Lane Aerodrome on 24 June 1927 and was fitted with an 85 hp (63 kW) ADC Cirrus II engine to check its handling characteristics.
The US Navy said the two pilots involved in the military plane crash near San Diego are in 'good condition' and under 24-hour medical observation.