The unification of certain terms and concepts used in the study of land transport-technological vehicles

On the basis of the analysis of terminology used in textbooks, monographs and articles, related to the theory, design and calculation of automobiles, tractors, wheeled and caterpillar transport and traction machines, the uniform terms and concepts are proposed, the most frequently used in the above mentioned disciplines and related technical documents to describe similar phenomena or processes. The coefficient of traction, tractive force on the surface adhesion, the vehicle adhesive weight, the coefficient of adhesive weight, the specific tractive force, the specific hook load, the coefficient of resistance to the rectilinear motion of the machine, the road surface resistance coefficient, the tractive force of the machine, the free engine power, the engine power losses associated with its maintenance, the parameter of rotation of the caterpillar tractor and the power factor of rotation are analyzed. In various literary sources, different terms are used to designate the same quantities, the same definitions are treated differently. It has been causing certain inconveniences and introduces confusion in the theory of land vehicles. The necessity for such unification is particularly relevant in relation to the approval of the Federal Education Standard in the speciality 23.05.01 «Land Transport-Technological Means», in which the above mentioned disciplines are included in the training of specialists, and the knowledge of the relevant technical terminology is considered at the level of competence. In this article, concrete proposals are given on the unification of certain terms and concepts used in the above mentioned theoretical disciplines. Since the field of terminology and definitions is rather painful and delicate, these proposals are submitted for a substantive discussion by professionals.

terms, concepts, unification, automobile, tractor, transport and tractive machine