Supermarine Sea Lion III
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| Sea Lion III | |
|---|---|
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| Henry Biard aboard the Sea Lion III in October 1923 | |
| Role | Racing flying-boatTemplate:Short description |
| National origin | UK |
| Manufacturer | Supermarine Aviation Works |
| Designer | R.J. Mitchell |
| First flight | 1923 |
| Retired | 1923 |
| Number built | 1 |
The Supermarine Sea Lion III was a British racing flying boat built by the Supermarine Aviation Works. Designed by Reginald Mitchell, it was a modification of Supermarine's Supermarine Sea Lion II. It was powered by a Script error: No such module "convert". Napier Lion engine.
Sea Lion III was entered for the 1923 Schneider Trophy contest at Cowes. Supermarine's test pilot Henry Biard flew the aircraft and managed third place, reaching a speed of Script error: No such module "convert".. The performance of the Sea Lion III led to Supermarine designing seaplanes instead of flying boats as racers.
Development
The British aircraft company Supermarine Aviation Works competed in the 1922 Schneider Trophy race for seaplanes and flying boats with a self-funded entry, in contrast to the Italian and French entries, which were sponsored by their respective governments.Template:Sfn The entry was a modification of their Sea King II fighter,Template:Sfn a single-seat biplane amphibian powered by a Script error: No such module "convert". Hispano Suiza engine in pusher configuration that had first flown in 1921.Template:Sfn The aircraft was designed at the company's works at Woolston, Southampton by Supermarine's chief designer and chief engineer, Reginald Mitchell,Template:Sfn who incorporated a Script error: No such module "convert". Napier Lion engine loaned by Napier.Template:SfnTemplate:Sfn
1923 Schneider Trophy race
The Sea Lion II was flown by Henry Biard, who won the race at an average speed of Script error: No such module "convert".,Template:Sfn The victory was the first post-World War I success by a British aircraft in an international competitionTemplate:Sfn
For the 1923 Schneider Race, which was held at Cowes on the Isle of Wight, the Sea Lion II was re-engined with a Script error: No such module "convert". Napier Lion and renamed as the Sea Lion III.Template:Sfn Mitchell modified the hull so as to reduce drag forces,Template:Sfn and he gave the aircraft two bay wings and a larger rudder area.Template:Sfn He expected the Sea Lion III to attain speeds in excess of Script error: No such module "convert".;Template:Sfn the aircraft managed third place behind the American Curtiss CR-3 seaplanes, reaching a speed of Script error: No such module "convert"..Template:Sfn Supermarine's managing director Hubert Scott-Paine said after the trophy was won by the Americans:Template:Sfn
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Our drawing office people got all the speed they possibly could out of the machine. We did the best we could and have no regrets. Sea Lion III was 11 mph faster than Sea Lion II, and the credit for this fine performance was due to several people, one of whom is Mr. R.J. Mitchell, who designed both machines.
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The British defeat caused Supermarine to abandon using outclassed flying boats as racers, in favour of seaplanes.Template:Sfn The Sea Lion III was transferred to the Royal Air Force in 1923.Template:Sfn
Operators
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Specifications (Sea Lion II)
References
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Sources
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