One of the significant parts in aeronautics is a branch of physical science called aerodynamics, which deals with the motion of air and the way that it interacts with objects in motion, such as an aircraft.

When people started to study scientifically how to fly, people began to understand the basics of air and aerodynamics.

For instance, internal aerodynamics encompasses the study of the airflow through a jet engine or through an air conditioning pipe.

It has several subdisciplines itself, including aerodynamics ( the study of air and other gases in motion ) and hydrodynamics ( the study of liquids in motion ).

For example, the phenomenon of flutter in aerodynamics occurs when an arbitrarily small displacement of an aircraft wing ( from its equilibrium ) results in an increase in the angle of attack of the wing on the air flow and a consequential increase in lift coefficient, leading to a still greater displacement.

Subsequent use of wind tunnels proliferated as the science of aerodynamics and discipline of aeronautical engineering were established and air travel and power were developed.

In aerodynamics the induced air currents are forming solenoidal rings around a vortex axis that is playing the role that electric current plays in magnetism.

This puts the air currents of aerodynamics into the equivalent role of the magnetic induction vector B in electromagnetism.

In electromagnetism the B lines form solenoidal rings around the source electric current, whereas in aerodynamics, the air currents form solenoidal rings around the source vortex axis.

He introduced the concept of boundary layer and founded mathematical aerodynamics by calculating air flow in the down wind direction.

However, in aerodynamics experiments with other insects he found that viscosity at the scale of small insects meant that even their small wings can move a very large volume of air relative to the size, and this reduces the power required to sustain flight by an order of magnitude.

Generally, when determining trajectories it may be necessary to account for nonuniform gravitational forces, air resistance ( drag and aerodynamics ).

In aerodynamics, the lift-to-drag ratio, or L / D ratio, is the amount of lift generated by a wing or vehicle, divided by the drag it creates by moving through the air.

A combination of aerodynamics and upward air currents ( or thermals ), together with the act of flapping or gliding is what keeps a bird aloft.

The SLR features active aerodynamics ; there is a spoiler mounted on the rear integral air brake flap.

The close-fitting bumper was actually a rear bumper that had been cut, narrowed, V ' ed in the center, and filled on the ends to create a crude air dam, further improving the aerodynamics of the car at high speeds.

Aerodynamic forces are generally proportional to the square of the air speed, therefore car aerodynamics become rapidly more important as speed increases.

Heavy trucks, like long haul tractors, may also have a spoiler on the top of the cab in order to lessen drag caused from air resistance from the trailer it's towing, which may be taller than the cab and reduce the aerodynamics of the vehicle dramatically without the use of this spoiler.

The technology of air intake filters of gas turbines has improved significantly in recent years, due to improvements in the aerodynamics and fluid-dynamics of the air-compressor part of the Gas Turbines.

" The " snow " was flakes of salt which were being sucked into the cockpit by the vagaries of the aerodynamics ; aside from being distracting, this brought up fears that the air pressure might crack or even completely shatter or remove the cockpit at speed.

However, air currents create a wake inside the pickup bed which helps the aerodynamics.

In addition to flying eight sorties on Super Dimona, a cadet is taught subjects like aerodynamics, navigation, aero engines, instrumentation, aviation medicine, airmanship, airframe, avionics & radio aids, meteorology, GSK and air power.

Carmel began preparing students for wartime employment or military service, offering courses in aerodynamics, meteorology, navigation, and civil air regulations.

External aerodynamics is the study of flow around solid objects of various shapes.

Internal aerodynamics is the study of flow through passages in solid objects.

Compressibility is an important factor in aerodynamics.

In compressible aerodynamics, density and pressure both change, which is the basis for calculating the speed of sound.

In these cases, statistical mechanics is a more valid method of solving the problem than continuous aerodynamics.

Subsonic ( or low-speed ) aerodynamics is the study of fluid motion which is everywhere much slower than the speed of sound through the fluid or gas.

The problem is then an incompressible low-speed aerodynamics problem.

According to the theory of aerodynamics, a flow is considered to be compressible if its change in density with respect to pressure is non-zero along a streamline.

The presence of shock waves, along with the compressibility effects of high-velocity ( see Reynolds number ) fluids, is the central difference between supersonic and subsonic aerodynamics problems.

The term is derived from the Greek word anemos, meaning wind, and is used to describe any airspeed measurement instrument used in meteorology or aerodynamics.

The power and aerodynamics of the Hornet allows them to perform a slow, high angle of attack " tail sitting " maneuver, and to fly a " dirty " ( landing gear down ) formation loop, the last of which is not duplicated by the Thunderbirds.

The performance of the cars is very dependent on electronicsalthough traction control and other driving aids have been banned since 2008and on aerodynamics, suspension and tyres.

The usage in this sense is encountered in some popular references on aerodynamics.

In the aerodynamics field, the Coandă effect is commonly defined in the more limited sense above and viscosity is used to explain why the boundary layer attaches to the surface of a wing.

Ever greater attention is being paid to aerodynamics in component group design.

The reason for this apparently strange behavior, as in many track cycling events, is both aerodynamics and tactics.

The design and analysis of the wings of aircraft is one of the principal applications of the science of aerodynamics, which is a branch of fluid mechanics.

Bernoulli's principle is of critical use in aerodynamics.