Vdo Adolf Schindling Ag

Adolf Schindling Ag

Hans-Norbert Patzig

Klaus Schult

Horst Kister

Jean-Francois Schwab

Michael Quenzer

An arrangement of sensors on the landing gear of an aircraft measure the weight and position of center of gravity of the aircraft. In order to compensate for errors caused by moment of torsion, one sensor each is arranged on a pair of lugs (53, 54) at two measurement points of an axle (55) or bogie beam lying opposite each other on the outside or of a shock-absorber landing-gear leg. Each of the sensors gives off an electric output variable corresponding to a vertical displacement (sensor deflection) between the lugs of a pair. The lugs (53, 54) are tapered at their roots (61, 62).

Arrangement of sensors on the landing gear of an aircraft for measuring

An arrangement in which at least one sensor is provided on the landing gear of an aircraft for measuring its weight and the position of its center of gravity, and in which a sensor for a measurement of shear is arranged at a measurement point formed by a pair of lugs on an axle or bogie beam. The axle (9) or bogie beam is of constant cross section above the measurement point and symmetrical to a vertical axis which lies centrally between the two lugs of a pair (10, 13 and 14, 15 respectively).

Arrangement of at least one sensor on the landing gear of an aircraft

A holding device for mounting a shear strain gauge 14 in an airplane axle 1 in which the shear strain gauge 14 consists of a coil part 18 with two magnet coils 19 spaced apart from each other and of a disk part 20. The disk part 20 has a disk 21 which, in normal position, extends equidistant between the magnet coils 19. The holding device has two holding rings 16 and 17 arranged axially at a given distance from each other, the coil part being adapted to be fastened to the one holding ring 16 thereof and the disk part 20 to the other holding ring 17. The holding rings 16 and 17 are developed with radial resilience and with a smaller outside diameter than the inside diameter of the airplane axle. They have radially protruding holding lugs 23 which rest under initial spring tension against the inner wall of the airplane axle 1. The holding rings 16 and 17 have support parts 28 and 28', the coil part 18 being adapted to be fastened to the support part 28' of the one holding ring 16 and the disk part 20 to the support part 28 of the other holding ring 17.

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Bad Homburg, Germany

Hans-Norbert Patzig