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The Supermarine Sea Urchin was an unbuilt British racing biplane flying boat designed by the Supermarine Aviation Works to compete in the 1924 Schneider Trophy. It was to be a single seat biplane, powered by a Rolls-Royce Condor V-12 water-cooled engine buried in the fuselage, driving a pusher propeller mounted on the upper wing via geared shafts. It was abandoned without being built owing to problems with the engine and the transmission required to drive the propeller.[1]
| Sea Urchin | |
|---|---|
| Role | Racing flying-boat |
| Manufacturer | Supermarine Aviation Works |
| Status | unbuilt |
Data from Supermarine Aircraft Since 1914[1]
General characteristics
- Crew: 1
- Powerplant: 1 × Rolls-Royce Condor V-12 water-cooled piston engine, 600 hp (450 kW) driving the propeller through bevel gearboxes and a transmission shaft
- Propellers: 4-bladed fixed-pitch pusher propeller
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