Handley Page H.P.47

The Handley Page H.P.47 was a British single-engined, low-wing monoplane built to Air Ministry specification G.4/31 for a general-purpose bomber and torpedo bomber to replace the Vickers Vincent, and only one was built. Designer Gustav Lachmann used construction methods like those of Junkers: a cantilever wing with a single spar, a stressed metal skin forward of the spar and fabric behind it, and full-span leading edge slats working with interceptors for control at high angles of attack. A Bristol Pegasus radial engine of about 650 to 690 horsepower drove it, and the fuselage had room for three passengers or two stretcher cases. It first flew on 27 November 1934 and was tested at Martlesham Heath, where the main criticism was poor longitudinal stability. The Vickers Type 246, built as the Wellesley, won the competition, and the H.P.47 went on to serve at the Royal Aircraft Establishment as a test aircraft until May 1937.