Study on drop test for landing gear of Seagull 300 aircraft

A drop test rig is developed for landing gears of Seagull 300 light multi-functional amphibious airplane based on its drop-test specifications.Several key technologies are studied including the wheel's turning speed,sliding with low friction,and design of impact platform and simulation of runway.According to the requirement of CCAR-23-R3,drop tests of Seagull 300 airplane are finished such as adjusting parameters for test,limited drop test and the reserve energy absorption drop test of nose landing gear.The test results show that the test system is secure and reliable,the limit load is lower than the design one and the landing gear can bear the reserve energy absorption drop.The test system can be applied for drop-test of other light airplane.Moreover,the test results can be used as the certification of the airworthiness for this airplane.