TECHNIQUE MEASURING THRUST FORCE OF ELECTRIC JET ENGINE ( VARIANTS ) AND FACILITY FOR ITS IMPLEMENTATION Russian patent published in 2003 - IPC

FIELD: force- measuring equipment. SUBSTANCE: in correspondence with first variant engine is positioned on mobile system of thrust-measuring facility, engine is started, signal from mobile system is transmitted to transducer of thrust-measuring facility and readings of transducer are read. Then transmission of signal from mobile system to transducer and transducer reading are stopped. Thrust force is established by difference in readings of transducer determined with presence of signal transmission and with stop of transmission of this signal. According to second variant engine is positioned on mobile system of thrust-measuring facility, engine is started , signal from mobile system is transmitted to transducer of thrust-measuring facility and readings of transducer are read. Then engine is stopped and first difference in readings of transducer before and after switching off of engine is determined and transmission of signal from mobile system to transducer is stopped. Engine is started again, readings of transducer are taken, engine is cut off, readings of transducer are taken and second difference of readings of transducer before and after engine cut-off is found. Thrust force is determined by subtraction of second difference of readings of transducer from first difference of readings of transducer. Proposed facility includes mobile system 1 with engine 2 put on it, thrust force transducer 3, element 4 transmitting engine thrust force from mobile system 1 to transducer 3. Element 4 transmitting engine thrust force is fitted with mechanism 5 used for disconnection of thrust force transducer 3 from mobile system 1. EFFECT: enhanced measurement accuracy. 5 cl, 3 dwg