Method for calculating service life of landing gear structure of shipboard aircraft based on sinking rate

The invention discloses a method for calculating the service life of an undercarriage structure of a shipboard aircraft based on a sinking rate. The method comprises the following steps: acquiring a stress spectrum according to a first actually measured load spectrum of the undercarriage structure; counting the first actual measurement load spectrum by adopting a rain flow counting method to obtain stress amplitudes and mean values corresponding to loads at all levels of the first actual measurement load spectrum; correcting the fatigue load spectrum of the undercarriage structure according to the stress amplitude and the mean value of the first actually measured load spectrum; and according to the fatigue load spectrum, the sinking rate of the shipboard aircraft and the damage coefficient corresponding to the sinking rate, the predicted service life of the undercarriage structure after each take-off and landing is corrected. The influence of the sinking rate on the damage of the carrier-based aircraft underc