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Aviation History
1960
1960 - 0960.PDF
20 FLIGHT 8 JULY 1950 Latest Olympus version-ready for production produces 20,000-lb thrust dry... BRISTOL SIDDELEY Security restrictions have just been lifted to permit the release of some details of the current Olympus version, the 21, which is now ready for production. 157-in long and with a 42-in intake diameter, the Bristol Siddeley Olympus 21 is Britain's most powerful military aero-engine. It inherits all the outstanding qualities of its forebears—high power at high altitude, unequalled handling characteristics, low fuel consumption and great Operational flexibility. It also possesses the highest thrust/ weight ratio of any high-thrust turbojet in the world. The Olympus series of engines owes its excellent all- round performance to the two-spool compressor system, pioneered by Bristol Siddeley and since adopted by the leading aero-engine producers in Britain and the USA. Proof of Olympus reliability is given by the fact that it has the longest achieved overhaul life, the lowest specific fuel consumption and the highest thrust of any bomber or fighter engine in squadron service with the RAF. The enormous development potential of the Olympus has repeatedly been proved. The first production version delivered 11,000-lb thrust dry, the current Olympus 21 has reached 20,000 lb, and an even later version is rated at no less than 33,000 lb with reheat. Olympus applications The Olympus 201 already gives the Avro Vulcan B 2, spearhead of the RAF's V-bomber force, an all-round performance unsurpassed by any other aircraft of its type. The Olympus 21 has been designed to allow the Vulcan to reach its ultimate design potentialities. The Bristol Siddeley Olympus is ideally suited to opera- tion at transonic speeds and an advanced version has been selected to power the British Aircraft Corporation's TSR 2, a new tactical support/reconnaissance aircraft chosen for the RAF. Other Olympus versions are under active consideration for the next generation of civil air- liners—the supersonic transports. f S BRISTOL SIDDELEY ENGINES LIMITED
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