A Mechanical Correction Method for Installation Errors of Air Data System Sensors

Abstract

The invention relates to a mechanical correction method for the installation error of an atmospheric data system sensor and belongs to the technical field of installation error correction of atmospheric data system sensors. The correction method includes reference transfer and relocation. The reference transfer includes the design and manufacture of a reference transfer mold and the transfer of alocating pin hole reference on a bracket by using the reference transfer mold. The relocation includes design and manufacture of a reference ring, design and manufacture of a locating pin, modification of an original bracket, installation and fixation of the reference ring and installation of the sensor. The reference ring is used for locating the sensor after the locating reference transfer, a locating pin hole in the original bracket is used as a reference on the reference ring, peripheral locating holes are set at intervals of a fixed angle alpha, no step difference exits, and the holing numbers correspond to the locating holes in the reference transfer mold one by one, Finally, a locating pin of the sensor is aligned with the locating pin hole in the reference ring for installation andfixation, and thus mechanical correction of the installation error is completed.

Description

technical field [0001] The invention relates to a method for mechanically correcting installation errors of air data system sensors, and belongs to the technical field of air data system sensor installation error correction. Background technique [0002] The air data system of civil or military aircraft contains a variety of sensors. These sensors are generally installed on the skin surface of the aircraft to measure the atmospheric parameters of the aircraft during flight. Since the airborne sensors are all precision instruments with complex structures, It is extremely sensitive to environmental factors, and the deviation of output data caused by installation errors can easily cause misjudgment by flight personnel, and even cause flight safety hazards in severe cases. [0003] In view of the above problems, usually in the ground manufacturing and assembly process, the tolerance control of the positioning and angle installation of the sensor bracket is carried out by using t...

AI Technical Summary

Problems solved by technology

However, for the installation out-of-tolerance caused by random or accumulation in the same direction, it is no longer possible to return to the frame for re-alignment, especially in the field, generally only through manual alignment after reaming and re-installation, or replace the positioning bracket for re-installation

Among them, manual alignment and installation after reaming is cumbersome and extremely demanding for the operator, and the vibration of the aircraft body is easy to cause slippage, resulting in an unstable installation state and sacrificing the reliability of the system to a certain extent.

For the replacement of the positioning bracket and reinstallation, generally only medium and large aircraft are suitable. Small and medium-sized aircraft, especially small aircraft, may easily cause the reference deviation of the whole aircraft due to the removal of a large number of rivets, resulting in the inoperability of the field.

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