A Study on the Improvement of Durability of Push Switches for Rotorcraft Control

In this study, we propose a method to improve the durability of rotorcraft switches. Additionally, the appropriate verification test results are presented. As a result of analyzing the defective switch, it was found that the contact was defective due to long-term use. It was confirmed that stable contact of the terminal is necessary to achieve appropriate performance. We manufactured a switch with one spring and a switch with two springs. As a result of the verification test using this, it was found that the durability of the improved shape was improved by 15 % compared to the existing shape. Those numbers have merit from an operational perspective. This has the effect of reducing the number of replacements per aircraft.