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All vane type air starters should have a lubricator installed to insure long-life and maximum performance. [4] Lubricators give the moving parts a needed friction barrier, reduce metal corrosion and keep vanes sealed properly against the cylinder walls. Even the so-called lube-free air starters require lubrication to prolong trouble free life.
Rotation speeds can vary between 100 and 25,000 rpm depending on several factors which include the amount of air pressure at the motor inlet and the diameter of the housing. [2] One application for vane-type air motors is to start large industrial diesel or natural gas engines.
The Hucks starter (invented by Bentfield Hucks during WWI) is a mechanical replacement for the ground crew. Based on a vehicle chassis the device uses a clutch driven shaft to turn the propeller, disengaging as the engine starts. A Hucks starter is used regularly at the Shuttleworth Collection for starting period aircraft. [3]
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]
GE won the Air Force contract for a new engine with approximately 14,000 pounds-force (62,000 N), with afterburning, to power a new supersonic bomber, which became the Convair B-58 Hustler. The two other engines offered by GE, an advanced version of the existing J73 and a much larger design, known as the J77, were both cancelled.
Air tanks can also be recharged from an external source in an emergency, such as a hand pump or a portable air compressor. The Coffman starter was the most common brand of cartridge starters during the mid-1930s, and the name was used as a generic description. Advances in electrical technology have made shotgun starters obsolete for most uses.
Output was 325 hp (242 kW) at 3300 rpm and 560 lb⋅ft (759 N⋅m) at 2000 rpm, but as of 2005 that was increased to 570 lb⋅ft (773 N⋅m) at 2000 rpm. It also uses a 2nd generation (G-2) HEUI (Hydraulic-Electronic Unit injector ) direct injection fuel system, as well as a variable-geometry turbocharger , which is designed to reduce turbo lag ...
Aircraft flight manual: AFS Aeronautical fixed service: AFT Aft The direction against the aircraft movement AFTN Aeronautical Fixed Telecommunication Network: AGACS Automatic ground–air communications system Also known as ATCSS or data link: AGB Accessory gear box: Mainly used in turbine engine: AGC Automatic gain control: AGDL Air–ground ...