Description: The work substantiates the parameters, describes the principles of construction and composition of the experimental installation for studying the means of measuring the velocity of the throwing element in the trunk channel. The method of conducting the experiment is developed, the results of experimental studies on modeling of the shot and recording and processing of measuring information are presented. An experimental installation was developed that allows to model the functioning of the measuring device for measuring the velocity of the throwing element in the trunk channel. A technique for performing experimental studies has been developed, which provides for varying the parameters of the elements of the optical and mechanical parts of the installation during the experiment in order to verify the adequacy of the mathematical model of the measuring instrument. The analysis of the data obtained makes it possible to draw the following conclusions: practically confirms the presence of a stable measuring signal and the possibility of its registration and processing in the conditions of conducting measurements that are close to real ones; the appearance of the obtained curves corresponds to the expected nature of the growth of the velocity of the throwing element in the channel of the barrel of the experimental installation; the presence of spatial inconsistency of laser beams on the surface of a throwing element on separate sections of its motion does not lead to a decrease in the "signal / interference" ratio to the levels that complicate the identification of the dominant harmonics of the Doppler frequency shift; the volume of measuring information is sufficient for processing the signal and determining the dependences of the velocity of the throwing element in the function of time.
Keywords: experimental unit, measurement instrument, velocity of the throwing element, laser Doppler anemometry, ballistic firing elements, firearm, barrel