Basic Concepts: Propulsion and Power

Abstract

The propulsion system provides the required force/power to propel forward an aircraft/rocket or any other object moving in air or space. The propelling force is the most important aspect in the design and operation of aircraft/spacecraft mission. Every major technological breakthrough in propulsion and associated system has redefined the frontiers of aerospace sciences. The urge to improve propulsion systems keeps engineers and scientist busy alike till this day and will continue to do so in the future. When the atmospheric air is used as a working medium in a propulsion system, it is often known as air‐breathing propulsion. This section explains the basics of air‐breathing propulsion through simple analogies. The evolution of various types of propulsion systems in the history of aviation is traced, with special emphasis on the jet engines. The developments and advancements in jet engines over the years, and the main challenges which aircraft propulsion will be facing in the future are also discussed. Finally, new engine concepts and their viability are presented.