1403. A New Technique of Weight Sensing


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W Rahr: 1403. A New Technique of Weight Sensing. 1981.



This paper addresses the technique of measuring weight on a landing gear by precise measurement of landing gear bogie beam or nose gear-axle angular deflection. A highly sensitive accelerometer is used as an inclinometer sensor for this purpose. This simple direct approach measures the angular displacement of one end of the beam or axle relative to the other end of the beam or axle under load. In order to determine weight the sensed angles are simply summed with respect to their inertial reference. Conversely ramp or runway gradient can be determined by subtraction. This inertial reference is an accelerometer sensor which has the necessary accuracy and repeatability to measure departures from vertical within the required accuracy.


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