He supervised the design of the Gloster GA-5 delta-wing fighter (later the Gloster Javelin which first flew in 1951 from RAF Moreton Valence south of Gloucester), which was designed by Richard Walker (Gloster's chief designer) and powered by Armstrong Siddeley Sapphire engines.
Han overvåger designet af Gloster GA-5 delta-vinge fighter (senere Gloster Javelin, som først fløj i 1951 fra RAF Moreton Valence syd for Gloucester), som blev designet af Richard Walker (Gloster's chefdesigner) og drevet af Armstrong Siddeley Safir motorer.