1. Material selection and treatment
-High-strength alloy materials with low temperature resistance and high temperature resistance are selected to adapt to extremely cold and high temperature environments.
-Special heat treatment and surface treatment are carried out on materials to enhance their corrosion resistance and fatigue resistance.
2. Sealing and protection
-Adopt high-performance seals to prevent moisture, dust and other impurities from entering key parts of landing gear, such as hydraulic system and movable joints.
-Add protective coating to improve the corrosion resistance of landing gear, especially in harsh environment such as salt fog.
3. Lubrication system
-Choose lubricants suitable for extreme temperature range to ensure that they will not solidify at low temperature and fail at high temperature, and ensure the smooth operation of moving parts.
4. Hydraulic system
-Optimize the design of hydraulic system, adopt high and low temperature resistant hydraulic oil and special sealing material to prevent the performance of hydraulic oil from decreasing or leaking at extreme temperatures.
5. Structural strengthening
-Strengthen the design of the key structure of the landing gear to withstand the load that may increase under extreme weather conditions, such as the increased weight of ice and snow accumulation.
6. Deicing and snow prevention design
-Equipped with deicing devices, such as electric heating elements or pneumatic deicing system, to prevent ice and snow from accumulating on the landing gear and affecting its performance.
-Reasonable drainage and snow discharge channels are designed to avoid damage to landing gear caused by snow and accumulated water.
7. Environmental testing and verification
-Conduct rigorous environmental simulation tests in the design stage, including extreme climatic conditions such as high temperature, low temperature, high humidity and heavy sandstorm.
-Improve and optimize the design according to the test results to ensure the stability of the landing gear in the actual extreme climate.
8. Redundancy design
-introducing redundant design of key components, such as spare hydraulic pipelines or supporting structures, to improve the reliability of the system under extreme conditions.
9. Monitoring and early warning system
-Install sensors to monitor the status of landing gear in real time, including temperature, pressure, deformation and other parameters.
-Establish an early warning system to find potential problems in time and alert the crew so as to take corresponding measures.
