Power plants – Combustion products used as motive fluid – Different fluids
Patent
1991-05-14
1993-08-03
Bertsch, Richard A.
Power plants
Combustion products used as motive fluid
Different fluids
60 3936, F23R 302, F02C 606
Patent
active
052318222
ABSTRACT:
In order to enhance starting and flame propagation at a high altitudes, particularly in small turbine engines such as auxiliary power units and the like, the turbine engine (10) includes a rotor (12), turbine blades (16) a turbine nozzle (20), an annular combustor (22), a fuel injector (40), and a compressed air bleed system (44). The annular combustor (22) is disposed about the rotor (12) and has spaced inner and outer walls (28 and 30) interconnected by a generally radially extending wall (32). A housing (34) substantially surrounds the annular combustor (22) to define an air flow path (36) including a compressed air inlet (38) in communication with a source of compressed air at one end thereof wherein the air flow path (36) extends from the compressed air inlet (38) at least part-way about the annular combustor (22). The fuel injector (40) includes a control system (42) integrally associated therewith for injecting fuel at an optimum flow rate and pressure directly responsive to instantaneous operating conditions. The compressed air bleed system (44) bleeds compressed air from the air flow path (36) in a substantially uniform manner for use at a remote location. With this arrangement, the turbine engine (10) is such that the compressed air bleed system (44) includes a valve (46) integrally associated therewith for bleeding compressed air at a variable rate directly responsive to instantaneous operation conditions, i.e., the valve (46) is substantially open for high altitude, low speed starting conditions during ignition, is entirely closed for high altitude, starting conditions after ignition, and is open during normal high altitude, full speed conditions when bleed air is required.
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patent: 2797562 (1956-10-01), Hall
patent: 3098626 (1963-07-01), Messinger
patent: 3905191 (1975-09-01), Matto
patent: 4747262 (1988-05-01), Maynard
patent: 4785624 (1988-11-01), Smith et al.
patent: 4838020 (1989-06-01), Fujitsuka
patent: 5103629 (1992-04-01), Mumford et al.
Bertsch Richard A.
Sundstrand Corporation
Thorpe Timothy S.
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