公开(公告)号：US20240344466A1

公开(公告)日：2024-10-17

申请号：US18660309

申请日：2024-05-10

Applicant: RTX Corporation

Inventor： Bradley C. Schafer ,  Brian V. Winebrenner ,  Jason B. Solomonides ,  Marc J. Muldoon ,  John P. Virtue, JR.

IPC: F01D25/36 ,  F01D21/04

CPC classification number: F01D25/36 ,  F01D21/04 ,  F05D2270/114

Abstract: A bowed rotor prevention system includes a gas turbine engine, and electric motor, and a core turning controller. The gas turbine engine includes a rotor that is rotatably coupled to a drive shaft. The electric motor is rotatably coupled to a motor shaft, which is mechanically coupled to the drive shaft so as to rotate therewith. The core turning controller in signal communication with the electric motor. The core turning controller determines whether a rotor bow is present in the rotor based on an operating time of the gas turbine engine, determines a motoring time based on the operating time, and invokes an anti-rotor bowing mode configured to control the electric motor to rotate the rotor according to the motor time.

公开(公告)号：US20240255055A1

公开(公告)日：2024-08-01

申请号：US18426952

申请日：2024-01-30

Applicant: RTX Corporation

Inventor： Calvin Jay Winder ,  Fadi S. Maalouf ,  Matthew E. Bintz ,  Ryan Hamilton Quinn ,  Justin Roger Delarm ,  Shane Tyler West ,  John P. Virtue, JR. ,  David R. Lyders ,  Anna Lauren Wright ,  Kalpendu J. Parekh ,  Pieter Van Lieu

IPC: F16J9/16 ,  F16J15/16 ,  F16J15/34 ,  F16J15/44

CPC classification number: F16J9/16 ,  F16J15/164 ,  F16J15/3488 ,  F16J15/443

Abstract: A machine comprising a rotor having: an inner member; an outer member encircling the inner member; and a groove in one of the inner member and the outer member. The groove has a first side wall, a second side wall and a base. A split ring seal is accommodated in the groove and contacts a surface of the other of the inner member and the outer member The first side wall has a plurality of open radial first channels and the second side wall has a plurality of open radial second channels.