Pratt-whitney Canada Corp

Frederic Giroux

Yusuf Razi Syed

Simon John Hartropp

Salvatore Calandra

Mark Iacobacci

Dariusz Chmiel

Martin Chabot

Adrienne Bajaj

Antwan Shenouda

Michael Krynski

Ioan Sabau

Adrienne Balaj

Herein provided are methods and systems for detecting an uncommanded or uncontrollable high thrust (UHT) event in an aircraft, comprising arming a UHT function, detecting a fuel flow error when an actual fuel flow minus a commanded fuel flow exceeds a first threshold, the fuel flow error indicative of a presence of excess thrust, detecting a UHT event based on excess thrust and as a function of a second threshold, upon detection of the fuel flow error, and accommodating the UHT event.

Detection of uncommanded and uncontrollable high thrust events

Methods for controlling an aircraft turbofan engine during icing of a temperature probe and devices for carrying out such methods are described. The methods may comprise: using one or more signals representative of temperature received from a heated temperature probe to generate one or more control signals for use in controlling the engine; determining that an icing condition associated with the probe exists; and using data representing one or more substitute signals in place of signals representative of temperature received from the heated temperature probe to generate the one or more control signals for use in controlling the engine.

Aircraft engine control during icing of temperature probe

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St. Jean sur Richelieu, Canada

Frederic Giroux