Abstract: A method of determination of geometric parameters of the space pivot axis for a retractable landing gear with turnable wheel is proposed. In order to make the method as simple as possible, only one linear equation is used by matrix transformation to solve the complicated problem for determining these parameters. The calculation method for the direction consines of the space pivot axis, the coordinates of the shortest distance between two line segments are different from other methods and satisfactory results can be obtained.

Key words: landing gear, space pivot axis, geometric parameters graph