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2. Aerospace bearing - Wikipedia

   en.wikipedia.org/wiki/Aerospace_bearing

   Jet engine bearings are typically manufactured from metals manufactured using a vacuum arc remelt to enable material requirements to be met. Jet engine shaft bearings and accessory drive shaft bearings typically use single piece or two piece machined retainers. The pressed steel or moulded retainers found on mass-produced bearings are not used.

3. Bristol Siddeley Orpheus - Wikipedia

   en.wikipedia.org/wiki/Bristol_Siddeley_Orpheus

   The weight savings from deleting a bearing and associated parts listed below gave an engine with a thrust of 5,000 lbf but weighing only 800 lb. [2] [i] Eliminating the usual centre support bearing for the shaft joining the compressor and turbine meant the shaft would whirl, assuming a bowed shape, and damage the engine. Whirling was prevented ...

4. Air bearing - Wikipedia

   en.wikipedia.org/wiki/Air_bearing

   Aerostatic bearings: the gas is externally-pressurized (using a compressor or a pressure tank) and injected in the clearance of the bearing. Consequently, aerostatics bearings can sustain a load even in absence of relative motion but require an external gas compression system, which induces costs in terms of complexity and energy.

5. Pratt & Whitney J52 - Wikipedia

   en.wikipedia.org/wiki/Pratt_&_Whitney_J52

   P&W J52-P-408 being worked on in the USS Kitty Hawk's jet shop. The Pratt & Whitney J52 (company designation JT8A) is an axial-flow dual-spool turbojet engine originally designed for the United States Navy, [2] in the 40 kN (9,000 lbf) class. It powered the A-6 Intruder and the AGM-28 Hound Dog cruise missile.

6. Pratt & Whitney PW1000G - Wikipedia

   en.wikipedia.org/wiki/Pratt_&_Whitney_PW1000G

   Mockup with compressor and turbine cutaway. After the budget of NASA on aeronautics research was severely cut at the start of 2006, Pratt & Whitney committed to spend $100 million a year on the geared turbofan (GTF) development for the next generation of single-aisle airliners, focused on the 25,000–35,000 lbf (110–160 kN) thrust range. [9]

7. Turbojet - Wikipedia

   en.wikipedia.org/wiki/Turbojet

   Diagram of a typical gas turbine jet engine Frank Whittle Hans von Ohain. The turbojet is an airbreathing jet engine which is typically used in aircraft. It consists of a gas turbine with a propelling nozzle. The gas turbine has an air inlet which includes inlet guide vanes, a compressor, a combustion chamber, and a turbine (that drives the ...