The Supermarine Type 553 was a British Mach 2 research aircraft project from 1953 that never proceeded beyond the initial proposal. == Design and development == The difficulty of achieving Mach 2 flight was realised during the development of the Supermarine Type 545, which led to Vickers-Supermarine proposing the 553 with a swept wing that would reduce aerodynamic drag.
The Supermarine Type 553 was a British Mach 2 research aircraft project from 1953 that never proceeded beyond the initial proposal. == Design and development == The difficulty of achieving Mach 2 flight was realised during the development of the Supermarine Type 545, which led to Vickers-Supermarine proposing the 553 with a swept wing that would reduce aerodynamic drag.
Source: Wikipedia "Supermarine Type 553" · CC BY-SA 4.0
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