The Proteus was the Bristol Aeroplane Company's first successful gas-turbine engine design, a turboprop that delivered just over 4,000 hp (3,000 kW). The Bristol Aeroplane Company, originally British and Colonial Aeroplane Company was a major British aviation company A gas turbine, also called a combustion turbine, is a rotary Engine that extracts energy from a flow of Combustion gas A turboprop engine is a type of aircraft powerplant that uses a Gas turbine engine to drive a Propeller. Proteus was a two spool, reverse flow gas turbine. Because the turbine stages of the inner spool drove no compressor stages, but only the propeller, this engine is sometimes classified as a free turbine. It was used mostly on the Bristol Britannia airliner, but saw some 3rd party use as well. Bristol Britannia was also a Car produced by Bristol Cars from 1982 to 1993 An airliner is a large Fixed-wing aircraft with the primary function of transporting paying passengers
The original Proteus Mk. 600 delivered 3,780 hp (2,820 kW), and was going to be used on the early versions of the Britannia and the Saunders-Roe Princess flying-boat. The Saunders-Roe Princess was a British Flying boat aircraft built by Saunders-Roe, based in Cowes on the Isle of Wight. The versions on the Princess were mounted in a large frame driving a single propeller through a gearbox, and were known as the Coupled Proteus. The Coupled Proteus was also intended to be used on the Mk. II versions of the Bristol Brabazon, but this project was cancelled. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout Only three Princess' were built, and only one of them flew, and by the time the Britannia was ready for testing they had decided to use the later Mk. 700 engines instead.
At this point the Proteus proved to have troubling icing problems, causing the engine and aircraft projects to be delayed while solutions were found. The Mk. 705 of 3,900 hp (2,900 kW) was the first version to see widespread production on the Bristol Britannia 100 and some 300 series. The Mk. 755 of 4,120 hp (3,070 kW) was used on the 200 series (not built) and other 300's, and the Mk. 765 of 4,445 hp (3,315 kW) was used on the RAF's Series 250 aircraft.
A marinised Proteus engine was used to power the Royal Navy's Brave and Bold class fast patrol boats, after testing on the frigate HMS Exmouth. The Royal Navy of the United Kingdom is the oldest of the British armed services (and is therefore known as the Senior Service) The Brave fast patrol boats were a class of Patrol boats that were the last of their type for the Royal Navy (RN Coastal Forces division HMS Exmouth, Pennant number F84, was a Royal Navy Anti-submarine warfare Frigate of the ''Blackwood''
The Proteus was also used to power the SR-N4 cross-channel hovercraft. The Mountbatten class Hovercraft or SR-N4 (Saunders Roe Nautical 4 was built by the British Hovercraft Corporation (BHC A hovercraft, or air-cushion vehicle (ACV is an Amphibious vehicle or craft, designed to travel over any sufficiently smooth surface supported by
Another use of the Proteus was for remote power generation in the South West of England in what were called "Pocket Power Stations". The regional electricity board installed several 2. 7MW remote operated generation sets for peak load powered by the Proteus. Designed to run for ten years many were still in use forty years later.
Bridgman, Leonard, ed. Jane’s All The World’s Aircraft 1951-1952. London: Samson Low, Marston & Company, Ltd 1951.