公开(公告)号：US10690366B2

公开(公告)日：2020-06-23

申请号：US15925060

申请日：2018-03-19

Applicant: Hamilton Sundstrand Corporation

Inventor： Joseph J. Ensberg ,  Thomas M. Zywiak ,  Matthew J. Smith

IPC: F24F11/30 ,  F24F11/88 ,  B64D13/08 ,  B64D13/06 ,  F24F140/60 ,  F24F110/40 ,  F28D21/00 ,  F28G13/00

Abstract: A system and method includes at least one heat exchanger, a ram fan, and a controller. The ram fan is driven by a motor. A motor control circuit is configured to provide power to the motor to drive the ram fan. The ram fan is configured to provide a ram flow through the at least one heat exchanger from a ram air inlet. The controller is configured to determine a blockage level of the at least one heat exchanger based on the power to the motor, a speed of the ram fan, and a temperature of the ram flow at the ram fan.

公开(公告)号：US20190285297A1

公开(公告)日：2019-09-19

申请号：US15925060

申请日：2018-03-19

Applicant: Hamilton Sundstrand Corporation

Inventor： Joseph J. Ensberg ,  Thomas M. Zywiak ,  Matthew J. Smith

IPC: F24F11/30 ,  B64D13/08 ,  F24F11/88

Abstract: A system and method includes at least one heat exchanger, a ram fan, and a controller. The ram fan is driven by a motor. A motor control circuit is configured to provide power to the motor to drive the ram fan. The ram fan is configured to provide a ram flow through the at least one heat exchanger from a ram air inlet. The controller is configured to determine a blockage level of the at least one heat exchanger based on the power to the motor, a speed of the ram fan, and a temperature of the ram flow at the ram fan.