Saunders-Roe SR.A/1: The World's First Jet-Powered Flying-Boat Fighter

Saunders-Roe's SR.A/1, the world's first jet-powered flying-boat fighter, first flew on 16 July 1947 but lost two of three prototypes to fatal accidents in 1949 before retiring in 1951.

Original report
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Industry impact

The programme illustrates how a promising airframe concept can be abandoned once its strategic rationale, engine supply and safety record all collapse at once.

In 1943, British firm Saunders-Roe, based in Cowes on the Isle of Wight, conceived a jet-powered flying-boat fighter capable of operating without a runway, a concept driven by the scarcity of airfields across the Pacific theatre of World War II. The Air Ministry ordered three prototypes in 1944 for the war against Japan, which ended before the aircraft entered service. Chief test pilot Geoffrey Tyson made the SR.A/1's maiden flight on 16 July 1947, lifting the first prototype off the water. It was powered by two Metropolitan-Vickers Beryl turbojets producing about 3,850 lbf of thrust each, reached a maximum speed of around 512 mph (824 km/h), and was designed to carry four 20 mm cannon, though it was never armed operationally.

The programme suffered two serious accidents in 1949. On 12 August, test pilot Eric "Winkle" Brown was landing in the Solent when submerged debris holed the hull and tore off a float; the aircraft cartwheeled and sank, and Brown was pulled unconscious from the wreck by Tyson. Five weeks later, a second prototype was lost off Felixstowe during low-level aerobatics, killing pilot Squadron Leader Kenneth Major, leaving two of the three prototypes destroyed.

By this time the aircraft carrier had proven an effective means of projecting airpower across oceans, and Metropolitan-Vickers had abandoned jet-engine development, leaving the Beryl out of production. The Korean War briefly revived interest in 1950 and data was shared with the United States, but the concept was considered obsolete, and the SR.A/1 flew for the last time in 1951. The sole surviving prototype, serialled TG263, is preserved at the Solent Sky museum in Southampton.