High Quality Content by WIKIPEDIA articles! The Wolseley Aquarius I or A.R.7 was a British seven-cylinder, air-cooled radial aero engine that first ran in 1933, it was designed and built by the Wolseley Motor Company. Intended for the military trainer aircraft market few were produced, as Wolseley withdrew from the aero-engine market in 1936, see Airspeed Ltd.