Prototype 173
Bristol 173 twin rotor G ALBN/XF785/7648M displayed at Aerospace Bristol Filton. First flown in 1952 intended as a civilian helicopter though did not go into production, the Bristol 172 Belvedere was derived from this design, that version in service with the RAF 1961 to 1969. To RAF Henlow as a maintenance airframe in 1960 as 7648M, stored at Kemble from 2002 acquired by the Filton Museum in May 2018.
Prototype 173
Bristol 173 twin rotor G ALBN/XF785/7648M displayed at Aerospace Bristol Filton. First flown in 1952 intended as a civilian helicopter though did not go into production, the Bristol 172 Belvedere was derived from this design, that version in service with the RAF 1961 to 1969. To RAF Henlow as a maintenance airframe in 1960 as 7648M, stored at Kemble from 2002 acquired by the Filton Museum in May 2018.