Scientific paper ID 69 : 2006/2

The paper develops a method of determining the attack angle. It has been used to register the attack angles with rolling stock testing under real operational conditions for the first time. For the purpose analytical theoretical apparatus has been created with reading the possible replacements within the system body . bogie base - car axles . track including the horizontal straight body-base formations. The dependencies obtained are convenient for experimental determining the attack angle under real operational conditions.