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公开(公告)号：US10040577B2
公开(公告)日：2018-08-07
申请号：US15042363
申请日：2016-02-12
发明人： Matthew D. Teicholz , Jeffrey W. Sutliff , William H. Greene, Jr. , Kenneth J. White , Matthew R. Feulner , John P. Virtue, Jr. , Jorn A. Glahn , Philip D. Hoover , Victor M. Pinedo , Jason B. Solomonides
CPC分类号： B64F1/34 , B64D27/16 , F02C7/27 , F02C7/277 , F05D2220/323 , F05D2260/85 , F05D2270/303 , F05D2270/71
摘要： A system for starting a gas turbine engine of an aircraft is provided. The system includes a pneumatic starter motor, a discrete starter valve switchable between an on-state and an off-state, and a controller operable to perform a starting sequence for the gas turbine engine. The starting sequence includes alternating on and off commands to an electromechanical device coupled to the discrete starter valve to achieve a partially open position of the discrete starter valve to control a flow from a starter air supply to the pneumatic starter motor to drive rotation of a starting spool of the gas turbine engine below an engine idle speed.
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公开(公告)号：US20180327117A1
公开(公告)日：2018-11-15
申请号：US16034550
申请日：2018-07-13
发明人： Matthew D. Teicholz , Jeffrey W. Sutliff , William H. Greene, JR. , Kenneth J. White , Matthew R. Feulner , John P. Virtue, JR. , Jorn A. Glahn , Philip D. Hoover , Victor M. Pinedo , Jason B. Solomonides
摘要： A system for starting a gas turbine engine of an aircraft is provided. The system includes a pneumatic starter motor, a discrete starter valve switchable between an on-state and an off-state, and a controller operable to perform a starting sequence for the gas turbine engine. The starting sequence includes alternating on and off commands to an electromechanical device coupled to the discrete starter valve to achieve a partially open position of the discrete starter valve to control a flow from a starter air supply to the pneumatic starter motor to drive rotation of a starting spool of the gas turbine engine below an engine idle speed, where the controller modulates a duty cycle of the discrete starter valve via pulse width modulation.
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公开(公告)号：US20180265223A1
公开(公告)日：2018-09-20
申请号：US15985782
申请日：2018-05-22
发明人： Matthew D. Teicholz , Jeffrey W. Sutliff , William H. Greene, JR. , Kenneth J. White , Matthew R. Feulner , John P. Virtue, JR. , Jorn A. Glahn , Philip D. Hoover , Victor M. Pinedo , Jason B. Solomonides
CPC分类号： B64F1/34 , B64D27/16 , F02C7/27 , F02C7/277 , F05D2220/323 , F05D2260/85 , F05D2270/303 , F05D2270/71
摘要： A system for controlling a start sequence of a gas turbine engine includes an electronic engine control system, a thermal model, memory, a model for determining a time period (fmotoring), and a controller. The thermal model synthesizes a heat state of the gas turbine engine. The memory records the current heat state at shutdown and a shutdown time of the gas turbine engine. The model for determining the time period is for motoring the gas turbine engine at a predetermined speed Ntarget that is less than a speed to start the gas turbine engine, where tmotoring is a function of the heat state recorded at engine shutdown and an elapsed time of an engine start request relative to a previous shutdown time. The controller modulates a starter valve to maintain the gas turbine engine within a predetermined speed range of NtargetMin to NtargetMax for homogenizing engine temperatures.
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公开(公告)号：US10787277B2
公开(公告)日：2020-09-29
申请号：US16034550
申请日：2018-07-13
发明人： Matthew D. Teicholz , Jeffrey W. Sutliff , William H. Greene, Jr. , Kenneth J. White , Matthew R. Feulner , John P. Virtue, Jr. , Jorn A. Glahn , Philip D. Hoover , Victor M. Pinedo , Jason B. Solomonides
摘要： A system for starting a gas turbine engine of an aircraft is provided. The system includes a pneumatic starter motor, a discrete starter valve switchable between an on-state and an off-state, and a controller operable to perform a starting sequence for the gas turbine engine. The starting sequence includes alternating on and off commands to an electromechanical device coupled to the discrete starter valve to achieve a partially open position of the discrete starter valve to control a flow from a starter air supply to the pneumatic starter motor to drive rotation of a starting spool of the gas turbine engine below an engine idle speed, where the controller modulates a duty cycle of the discrete starter valve via pulse width modulation.
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公开(公告)号：US10221774B2
公开(公告)日：2019-03-05
申请号：US15216183
申请日：2016-07-21
摘要： A system is provided for speed control during motoring of a gas turbine engine of an aircraft. The system includes an air turbine starter, a starter air valve operable to deliver compressed air to the air turbine starter, and a controller. The controller is operable to adjust the starter air valve to control motoring of the gas turbine engine based on measured feedback with lead compensation to reject disturbances attributable to dual to single or single to dual engine starting transitions.
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公开(公告)号：US20180023484A1
公开(公告)日：2018-01-25
申请号：US15216183
申请日：2016-07-21
CPC分类号： F02C9/20 , B64D27/10 , B64D31/12 , F01D19/02 , F02C7/268 , F02C7/27 , F05D2220/323 , F05D2260/85 , F05D2270/02 , F05D2270/13 , F05D2270/301 , F05D2270/304 , F05D2270/705
摘要： A system is provided for speed control during motoring of a gas turbine engine of an aircraft. The system includes an air turbine starter, a starter air valve operable to deliver compressed air to the air turbine starter, and a controller. The controller is operable to adjust the starter air valve to control motoring of the gas turbine engine based on measured feedback with lead compensation to reject disturbances attributable to dual to single or single to dual engine starting transitions.
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公开(公告)号：US20170233103A1
公开(公告)日：2017-08-17
申请号：US15042363
申请日：2016-02-12
发明人： Matthew D. Teicholz , Jeffrey W. Sutliff , William H. Greene, JR. , Kenneth J. White , Matthew R. Feulner , John P. Virtue, JR. , Jorn A. Glahn , Philip D. Hoover , Victor M. Pinedo , Jason B. Solomonides
CPC分类号： B64F1/34 , B64D27/16 , F02C7/27 , F02C7/277 , F05D2220/323 , F05D2260/85 , F05D2270/303 , F05D2270/71
摘要： A system for starting a gas turbine engine of an aircraft is provided. The system includes a pneumatic starter motor, a discrete starter valve switchable between an on-state and an off-state, and a controller operable to perform a starting sequence for the gas turbine engine. The starting sequence includes alternating on and off commands to an electromechanical device coupled to the discrete starter valve to achieve a partially open position of the discrete starter valve to control a flow from a starter air supply to the pneumatic starter motor to drive rotation of a starting spool of the gas turbine engine below an engine idle speed.
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