At the age of 18 in September 1911, he began work as
Alliott Verdon-Roe's (later Sir Alliott) personal assistant and the firm's draughtsman at A.V. Roe and Company,
Avro, based at
Brownsfield Mill, Manchester. Under the direction of A.V. Roe, Chadwick drafted the
Avro D, a two-seater tractor biplane, the
Avro E, which was converted to a floatplane, and in 1912, the
Avro F, the world's first monoplane and enclosed-cabin machine. He then worked on the draughtsmanship for the
Avro 500,
501 and
503, which led to Avro's
World War I light bomber and trainer, the
Avro 504. In 1915 at age 22, Chadwick designed the
Avro Pike, a twin-engined pusher biplane bomber. That year, when starting to design entire aircraft, he was based at
Hamble, near
Southampton. In 1918 he was appointed Avro's Chief Designer when Avro had about 40 employees. He designed the
Avro Baby and in 1920, the
Avro Aldershot, the world's largest single-engined bomber and variants of the Aldershot, the
Avro Ava and the
Avro Andover. In 1925 he designed an all-metal plane, the single-seater fighter
Avro Avenger and in 1926, the
Avro Avian in which
Bert Hinkler flew the first solo flight from England to Australia in 1928. In 1928, he moved back to the
Avro factory in
Woodford, Greater Manchester, used by
BAE Systems until its closure in 2012. That year, he designed an eight-passenger high wing plane, the
Avro 10 and a four-passenger version, the
Avro 4. In 1929, he designed the RAF trainer, the
Avro Tutor, a smaller version, the
Avro Cadet and an enclosed version, the
Avro Commodore. This was followed by the
Avro Anson, used in
World War II for training crews and as transport aircraft. In the late 1930s work began on a long-range bomber, the
Avro Manchester, followed by the
Avro Lancaster (Avro 683) of which 7,300 were built. In 1939, production of Avro aircraft was moved to a new factory at Greengate in
Chadderton, owned by BAE Systems until its closure in 2012. In 1941, he designed a long-range transport, the
Avro York and larger variants of the Lancaster, the
Avro Lincoln and the
Avro Lancastrian. After the war, he designed Britain's first pressurised airliner, the
Avro Tudor, based around the Lancaster-derivative
Avro Lincoln, though few were built and also the Avro Shackleton in 1946. His final involvement with Avro was overseeing the initial designs of the
Avro Vulcan (Avro 698) from 1946. Author
Harald Penrose describes Chadwick in "British Aviation" as "Artistic with unbounded enthusiasm and unsparing energy, Roy Chadwick was a great designer of intuitive diagnostic ability rather than a scientist, yet like all great masters was in step with the tide of knowledge and contemporary outlook." Chadwick was appointed a
Commander of the Order of the British Empire in the
1943 Birthday Honours for his contribution to the design of the Lancaster and in particular for the adaptations he made to it in preparation for the low-level attacks on the German dams, during the Dam Busters raid
Operation Chastise. The same year he was granted the Honorary Freedom of the City of London. ==Personal life==