On 21st June 1936 was made a test flight of a prototype of a British two-engine bomber Handley Page Hampden (HP.52). The aircraft reached a speed over 400 km/h, could carry almost two tons of bombs, defence weaponry consisted of 4 machine guns. They were entered into RAF’s service in 1938. The Hampdens were also used by Australian, Canadian, New Zealand, Soviet and Swedish air forces.
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