CONTROL METHOD OF AIRCRAFT ENGINE REVERSING DEVICE AT AIRCRAFT BRAKING Russian patent published in 2020 - IPC F02K1/76 

FIELD: engine building.

SUBSTANCE: invention relates to aircraft engine building, particularly, to control methods of gas turbine engine reversing device at aircraft braking. Proposed method comprises control of thrust by electronic control of gas turbine engine, automatic blocking of signal output to control position of reversing device when airplane is in air until touches of runway landing gear supports; displacement of engine control lever (ECL) from small gas platform to site of minimum return thrust, opening of mechanical lock of reversing device and output of information signal "Lock of reversing device is not closed". After its opening control action is generated from electronic engine regulator for transfer of reverse device from "Forward draft" position to "Reverse thrust" position. Diagnosing the position of the reversible device shutters is performed and the information signal is generated in the cockpit of the "Reversing device is on" crew cabin after the reversible device shutters are moved to the "Reverse thrust" position, ECL is converted to position "Maximum return thrust" and automatic setting of engine operating mode, which corresponds to position of ECL, then reversing device is switched off. In addition, the first information signal "Two or three chassis supports are reduced", the second information signal "Chassis is reduced", the third information signal "Backward thrust", the fourth information signal "Control unit reversing device reverse" is formed. Moment of contact of the runway aircraft is determined in the presence of the first information signal "Two or three chassis supports are compressed" or the second information signal "Chassis is compressed", at that, the reversing device shutters shifting from the "Forward draft" position to the "Reverse traction" position after the ECL installation to the "Minimum return thrust" site and at simultaneous availability of the "Two or three suspension chassis" or "Chassis reduced" information signals, "Reversible device lock is not closed", "Reverse device rearrangement control unit is working".

EFFECT: invention allows improving operating reliability of the engine and flight safety during aircraft braking with inclusion of a reversing device.

7 cl, 1 dwg