#aerostatics

• Aeromechanics — A branch of fluid mechanics that studies the equilibrium and motion of air or other gases, as well as the mechanical behavior of solid bodies immersed in them or in relative motion to them. This major scientific field is structurally subdivided into aerostatics (the study of gases in equilibrium) and aerodynamics (the study of gases in motion).
• Aerostatic — Relating to aerostatics or to the equilibrium of gases and bodies immersed in them; concerning flying apparatus lighter than air, whose atmospheric sustainability relies on static Archimedean force. The term describes the mechanical properties, internal pressures, gas-tight envelopes, or hydrostatic principles applied to gaseous media.
• Aerostatics — A branch of fluid mechanics and physics that studies the equilibrium conditions of air and other gases, as well as of solid bodies immersed within them. In an applied sense, it represents the science, technology, and history of designing, constructing, and navigating lighter-than-air aircraft, grounded in hydrostatic laws transposed to the atmospheric environment.