Engine starting and stopping
Abstract
Different starter systems for jet engines are discussed: electric, cartridge, iso-propyl-nitrate, air, gas turbine, and hydraulic. The fuel system, ignition system, air flow control system, and actual starting mechanism of an air starter motor system are considered. The variation of engine parameters throughout a typical starting sequence are described, with reference to examples for an RB211-535 engine. Physical constraints on engine starting are considered: rotating stall, light up, the window between hang and stall, hang, compressor stall, and the effects of ambient conditions. The following are also discussed: contractual and airworthiness requirements; windmilling; inflight relighting; afterburning light up; combustion stability; and broken shafts. Graphics illustrating the above are presented.
- Publication:
-
VKI Gas Turbine Engine Transient Behaviour
- Pub Date:
- 1993
- Bibcode:
- 1993VGTET....T....C
- Keywords:
-
- Afterburning;
- Aircraft Reliability;
- Autorotation;
- Combustion Stability;
- Engine Failure;
- Engine Starters;
- Jet Engines;
- Starting;
- Air Flow;
- Compressors;
- Constraints;
- Fuel Systems;
- Ignition Systems;
- Requirements;
- Transient Response;
- Mechanical Engineering