Abstract
SkySpotter 150 is an unmanned helicopter introduced recently by Modelárna LIAZ. The gearbox test rig developed for this helicopter has an innovative design. The drive is combined with a dynamometer and an axial force mechanism, which simulates the load from the main rotor on the gearbox output shaft. It leads to a special solution. The measurement methodology was developed including all sensors and design of the rig with a non-traditionally oriented dynamometer. The design has safety features that protect the test rig components and operator. The test rig is used for many tests during the development and improvement of the new helicopter generation. It also serves for verifying the gearbox parameters during its lifetime; it means tests of new gearboxes as well as technical diagnostic during periodical inspections.
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