#dynamics

• Advective — Relating to advection; caused, induced, or driven by the process of advection (the horizontal transport of an atmospheric or fluid property, such as mass, heat, or moisture). In synoptic meteorology, the term describes complex phenomena triggered by large-scale horizontal air mass movements, such as advective fog or advective frost, both originating from the sudden intrusion of an air front with contrasting thermal traits over a region.
• Aeraulics — A branch of applied physics and installation engineering that deals with the study of air flow, distribution, and treatment in ducts, enclosed spaces, or ventilation systems; the technique of designing structural air renewal and conditioning networks based on the principles of gaseous fluid dynamics.
• Aeriform — Having the form, properties, or appearance of air; a physical state of matter characterized by the lack of a definite shape and a fixed volume, showing a natural tendency for indefinite expansion. In modern scientific terminology, the term is used as a refined synonym for the gaseous state, describing substances whose molecules have high kinetic energy and minimal cohesion.
• Airlift — A technical installation, pump, or device based on the principle of pneumatic transport, used to lift a liquid or a mixture of water and sediments through a vertical pipe by injecting compressed air at the base. This system is widely used in aquaristics for water filtration, in petroleum engineering, and in dredging operations due to the absence of moving mechanical parts.
• Aerodyne — Any aircraft heavier than air, whose support and lift in the Earth's atmosphere are provided exclusively by the dynamic forces exerted by air on its lifting surfaces (fixed wings or moving rotors) during travel. The classification includes airplanes, helicopters, gliders, and drones, representing the opposite of aerostats.
• Aerodynamic — Relating to aerodynamics, concerning the motion of air and gases relative to solid bodies; having a fluid and optimized geometric shape, specially designed to minimize the drag resistance opposed by air during movement. It is widely applied in the design of aircraft, high-speed vehicles, and high-performance sports equipment.
• Aerodynamics — A branch of fluid mechanics that studies the laws governing the motion of air or other gases, as well as the forces exerted by them on solid bodies in relative motion to them. This scientific field governs the design of aircraft, rockets, and terrestrial vehicles by optimizing lift and drag forces.
• Aerodynamicist — An engineer or researcher specialized in the field of aerodynamics; a specialist who deals with the study, design, optimization, and testing of the behavior of solid bodies (aircraft, cars, rockets) moving through airflows or gases. This activity includes the use of advanced computer simulations and experimental tests in wind tunnels to reduce drag resistance.
• Aerodynamicist — The feminine form for the term aerodinamician; a female engineer or researcher specialized in the study of aerodynamic forces, the design of aerodynamic profiles, and the optimization of airflows for various vehicles, aircraft, or industrial structures through computational or experimental methods.
• Aerodynamic efficiency — The quality, property, or degree to which a solid object possesses an aerodynamic shape; the structural capacity of a vehicle's body or an aircraft's fuselage to pierce through air layers with minimal drag resistance. Although frequently used in automotive or commercial jargon, the refined technical term 'aerodynamics' is preferred in academic settings.
• Hovercraft — A self-propelled amphibious vehicle (hovercraft) capable of moving at a low altitude above water, land, swamps, or ice, by generating a continuous layer of compressed air beneath its hull (air cushion) which cancels its direct friction with the ground surface.
• 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).
• Aerometeorograph — A complex meteorological apparatus (recorder) specially designed to be mounted on board an airplane, aircraft meteorograph, or sounding balloon, used for the simultaneous graphic measurement and recording, on a rotating drum, of variations in barometric pressure, temperature, and humidity within the upper layers of the free atmosphere.
• Aeronautics — The science, technology, and collective industries dealing with the design, construction, testing, operation, and navigation of aircraft within Earth's atmosphere. The field encompasses complex disciplines such as aerodynamics, aerospace structures, propulsion, and avionics systems, aiming to optimize the safe movement of vehicles lighter or heavier than air.
• Aeropause — A transition zone or upper region of Earth's atmosphere, located beyond the dense layers, where the air density becomes so low that it can no longer provide lift for conventional aircraft or support sound wave propagation. This structural threshold marks the functional limit of classical aviation and the beginning of upper aerospace, where flight is governed exclusively by orbital mechanics.
• Air-breathing jet — Utilizing the reaction of atmospheric air absorbed and expelled at high speed to produce the propulsion force necessary for movement; a system, engine, or aircraft based on burning a fuel in atmospheric oxygen. This type of structural propulsion is specific to modern turbojet airplanes, differing from rockets in that it does not carry its own oxidizer.
• Aerothermal — Relating to thermal phenomena occurring in the air or under the influence of air currents; concerning heat transformations within gaseous media. In modern technology, it describes advanced systems or heat pumps (air-to-water or air-to-air) that extract the thermal energy naturally stored in the outdoor air to provide building climate control.
• Aerothermodynamics — An advanced branch of fluid mechanics and thermodynamics that studies the behavior, physical properties, and thermal phenomena of airflows moving at extremely high speeds (supersonic and hypersonic). This structural science analyzes the complex interactions between aerodynamic forces and the intense heat transfer generated by gas friction, being essential for the design of rockets, space shuttles, and atmospheric re-entry vehicles.
• To flow toward — To flow or move in a single and constant direction, used especially to describe the movement of liquid masses. In medical and physiological fields, the term defines the process by which blood or other biological fluids gather in much larger quantities in a specific point, organ, or tissue.
• Inflow — The act of flowing or gathering; the massive, continuous, and convergent movement of a fluid, a crowd of people, or goods toward a single point. In medicine, it represents the abundant and rapid accumulation of blood or other biological fluids in a specific organ or tissue.