Detection of the overspeed of a free turbine by measuring using a torque meter

The invention relates to a device for protecting against the overspeed of a free turbine (6) of a turbine engine which comprises a gas generator including at least one compressor (1), a combustion chamber (3), at least one linked turbine (4) and a system for controlling the fuel injected into said c...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	FREALLE JEAN-LUC CHARLES GILBERT, PERBOS ALAIN MICHEL
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AEROPLANES AIR INTAKES FOR JET-PROPULSION PLANTS AIRCRAFT ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT AVIATION BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS COSMONAUTICS ENGINE PLANTS IN GENERAL EQUIPMENT FOR FITTING IN OR TO AIRCRAFT FLYING SUITS GAS-TURBINE PLANTS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HELICOPTERS HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 LIGHTING MACHINES OR ENGINES IN GENERAL MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PARACHUTES PERFORMING OPERATIONS PHYSICS STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TESTING TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a device for protecting against the overspeed of a free turbine (6) of a turbine engine which comprises a gas generator including at least one compressor (1), a combustion chamber (3), at least one linked turbine (4) and a system for controlling the fuel injected into said combustion chamber, the gases produced by said generator being sent to said free turbine (6), said device including at least one torque-measuring means (12) supported by an output shaft (8, 11) mechanically coupled to said free turbine, and a signal-processing unit capable of transmitting an order to the control system of the turbine engine to reduce the flow rate of injected fuel in the event it is detected that the torque drops below a set value, wherein the measurement of the torque used for triggering said reduction is carried out during a rotation corresponding to a fraction of a revolution of said output shaft (8, 11).