Yuli D. Chashechkin graduated from the full course in 1964 and completed his postgraduate course at the Moscow Engineering Physics Institute in 1967 with a degree in Theoretical Nuclear Physics and started to work at the All-Union Institute for Physics- and Radiotechniques Measurements as an engineer, research scientist, head of the laboratory. At the same time, he taught at the Moscow Engineering Physics Institute from 1967 to 1971 and at the Moscow Institute of Physics and Technology from 1973 to 1981. He defended his thesis for the degree of candidate in 1973, and the doctor of physical and mathematical sciences in 1981 and was invited to the Institute for Problems of Mechanics of the Academy of Sciences of the USSR to organize the laboratory of fluid mechanics. From 1987 to 2017, he worked part-time as a professor at the Physics Department of Lomonosov Moscow State University. The range of scientific interests includes theoretical and experimental studies of flows, wakes, vortices, waves, and ligaments - high-gradient interfaced and filaments in inhomogeneous fluids; interaction of obstacles with the flow; generation; propagation and scattering of sound. He develops methods of optical and acoustic visualization of flows. He is the author of over 400 articles, preprints, and reports. He was invited to perform scientific work and lecture at universities in the USA, France, Japan, Italy, Spain, Slovenia and India.