Turbine engine fan speed monitor

A turbine fan speed monitor for use with an aircraft engine which monitors actual fan speeds for each of a plurality of aircraft engines. The apparatus also input instantaneous values of total air temperature, pressure altitude, altitude rate, and the position of the wheels. The fan speed monitor ca...

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Bibliographische Detailangaben
Hauptverfasser:	WIDNER, KENNETH P, GUENTHER, GARY D, HOWELL, IV, JOHN S
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE BLASTING CHECKING-DEVICES ENGINE PLANTS IN GENERAL GENERATING RANDOM NUMBERS HEATING INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT LIGHTING MACHINES OR ENGINES IN GENERAL MEASURING MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PHYSICS REGISTERING OR INDICATING THE WORKING OF MACHINES STEAM ENGINES TESTING TIME OR ATTENDANCE REGISTERS VOTING OR LOTTERY APPARATUS WEAPONS
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Beschreibung
Zusammenfassung:	A turbine fan speed monitor for use with an aircraft engine which monitors actual fan speeds for each of a plurality of aircraft engines. The apparatus also input instantaneous values of total air temperature, pressure altitude, altitude rate, and the position of the wheels. The fan speed monitor calculates an overspeed limit value for the turbine fan as a function of each of the total air temperature, pressure altitude, altitude rate, and position of the wheels data and indicates when the actual fan speed exceeds the overspeed limit value for each monitored engine. The monitor warns the pilot of calculated overspeed conditions that he can control by throttle manipulation. Engine life is related to the calculated speeds at take-off, climb and cruise. The monitor keeps a record of the time and duration of these instances when the actual fan speed exceeds the overspeed limit for any engine. The monitor may also include a display to indicate the value of any of the calculated or sensed parameters including the frequency of the actual fan speed exceeding the overspeed limit for any engine. The monitor may also include data entry controls to manually input engine data previously accumulated for a monitored engine.