• Presents the theoretical aspects and applications of high-speed flows, aerodynamics, high-enthalpy flows, and aircraft design. • Provides a ready reference source for readers to learn essential concepts related to flow physics, rarefied, and stratified flows. • Comprehensively covers topics such as laser Doppler anemometer, latent heat of fusion, and latent heat of vaporisation. • Includes schematic sketches and photographic images to equip the reader with a better view of the concepts. This is ideal study material for senior undergraduate and graduate students in the fields of mechanical engineering, aerospace engineering, flow physics, civil engineering, automotive engineering, and manufacturing engineering.