为了研究摆振试验跑道模拟装置（飞轮）弧面对起落架摆振试验影响的问题，以

In order to study the influence of the camber surface of the runway simulation device (flywheel) on the sway vibration test of the landing gear, the former landing gear was taken as the research object, and the landing gear sway vibration considering the influence of the rolling of the camber surface of the tire was established based on the second-order tire tensioning theory. The analysis model is combined with the classical sway analysis method to simulate the influence of the large flywheel camber. The results show that: 1) the cambered surface of the flywheel affects the rolling characteristics of the tire; 2) the cambered surface of the flywheel reduces the critical damping required for the anti-sway of the landing gear, increases the stable area of ​​sway vibration, and decreases the unstable area; 3) this effect increases with the flywheel The radius increases and decreases, and increases as the tire radius increases; 4) For the landing gear with the tire radius within 0.5m, when the flywheel radius of the test bench reaches 2.5m, the system anti-sway critical damping error does not exceed 7.11% , to meet the engineering requirements. This conclusion can provide a reference for the evaluation of laboratory landing gear sway test results.

In order to study the influence of the runway simulation device (flywheel) arc on the landing gear shimmy test, the landing gear was taken as the research object in the past. Based on the second-order tension theory of tire, the landing gear shimmy analysis model considering the rolling influence of tire arc was established, and the influence of large flywheel arc was simulated combined with the classical shimmy analysis method. The results show that: 1) the camber of flywheel affects the rolling characteristics of tire; 2) The flywheel camber reduces the critical damping required for landing gear anti swing, increases the swing stability area and decreases the unstable area; 3) This effect decreases with the increase of flywheel radius and increases with the increase of tire radius; 4) For the landing gear with tire radius less than 0.5m, when the flywheel radius of the test bench reaches 2.5m, the critical damping error of the system anti swing shall not exceed 7.11%, meeting the engineering requirements. The conclusion can provide a reference for the evaluation of landing gear shimmy test results in the laboratory.

In order to study the influence of the runway simulator (flywheel) camber on the landing gear shimmy test, the front landing gear was taken as the research object, and the shimmy analysis model of landing gear considering the rolling influence of the tire camber was established based on the second-order tire tension theory, and the influence of the flywheel camber was simulated by combining with the classical shimmy analysis method. The results show that: 1) the flywheel camber affects the tire rolling characteristics; 2) The flywheel camber reduces the critical damping required by landing gear anti-shimmy, increases the shimmy stability region and reduces the unstable region; 3) This influence decreases with the increase of flywheel radius and increases with the increase of tire radius; 4) For the landing gear with the tire radius less than 0.5m, when the flywheel radius of the test bench reaches 2.5m, the critical damping error of the anti-swing system does not exceed 7.11%, which meets the engineering requirements. The conclusion can provide reference for the evaluation of landing gear shimmy test results in laboratory.