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公开(公告)号：US11976589B2
公开(公告)日：2024-05-07
申请号：US17720900
申请日：2022-04-14
Applicant: RTX CORPORATION
Inventor： Stephen A. Witalis , Ramesh Rajagopalan , Subhradeep Chowdhury
CPC classification number: F02C6/08 , F02C9/42 , F02C9/28 , F05D2260/96 , F05D2270/071
Abstract: An engine system for an aircraft includes a first gas turbine engine, a second gas turbine engine, and a control system. The control system is configured to operate the first gas turbine engine with a sub-idle fuel burn schedule based on detecting landing of the aircraft, where the sub-idle fuel burn schedule includes a reduction of an idle fuel burn schedule. The control system is configured to operate the second gas turbine engine with the idle fuel burn schedule based on detecting landing of the aircraft.
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公开(公告)号：US11905891B2
公开(公告)日：2024-02-20
申请号：US17407874
申请日：2021-08-20
Applicant: RTX CORPORATION
Inventor： Boris Karpman , Mark A. Bushman , Subhradeep Chowdhury , Richard P. Meisner
CPC classification number: F02C9/00 , G05B13/04 , G05B24/00 , F05D2220/323 , F05D2270/71
Abstract: An engine control system includes an engine controller configured to execute an open-loop model of the engine control system. The open-loop model receives a measured effector and boundary condition parameter vector and generates a synthesized engine operating parameter based on the measured effector and boundary condition parameter vector. The engine controller calculates a corrector error value between the synthesized engine operating parameter and a measured engine operating parameter, and determines an open loop corrector error calculated as a difference between the corrector error and a vector-matrix product of corrector state vector and a gain map/function. The engine controller applies the gain map/function to the open loop corrector error to determine an effector and boundary condition error vector of the measured effector and boundary condition parameter vector.
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