# Dynamic Pressure

In incompressible fluid dynamics dynamic pressure (indicated with q, or Q, and sometimes called velocity pressure) is the quantity defined by:

where (using SI units):

 = dynamic pressure in pascals, = fluid density in kg/m3 (e.g. density of air), = fluid velocity in m/s.

### Other articles related to "dynamic pressure, pressure":

Equivalent Airspeed
... EAS) is the airspeed at sea level in the International Standard Atmosphere at which the dynamic pressure is the same as the dynamic pressure at the true airspeed (TAS ... EAS is a function of dynamic pressure ... is dynamic pressure ...
Dynamic Pressure - Compressible Flow
... Many authors define dynamic pressure only for incompressible flows ... For compressible flows, these authors use the concept of impact pressure.) However, some British authors extend their definition of dynamic pressure to include ... By applying the ideal gas law the definition of speed of sound and of Mach number and dynamic pressure can be rewritten as where (using SI units) = static pressure in Pascals ...
Stagnation Point - Pressure Coefficient
... This information can be used to show that the pressure coefficient at a stagnation point is unity (positive one) where is pressure coefficient is static pressure at the point at which pressure ...
Max Q
... In aerospace engineering, the maximum dynamic pressure, often referred to as maximum Q or max Q, is the point at which aerodynamic stress on a vehicle in atmospheric flight is maximized ... Dynamic pressure, q, is defined mathematically as where ρ is the local air density, and v is the vehicle's velocity ... For a typical launch of a rocket from the ground into space, dynamic pressure is zero at lift-off, when the air density ρ is high but the vehicle's speed v = 0 zero ...
Reentry - Entry Vehicle Design Considerations
... atmospheric entry Peak heat flux Heat load Peak deceleration Peak dynamic pressure Peak heat flux and dynamic pressure selects the TPS material ... Peak dynamic pressure can also influence the selection of the outermost TPS material if spallation is an issue ... The undershoot trajectory also has the highest peak heat flux and dynamic pressure ...

### Famous quotes containing the words pressure and/or dynamic:

Under the pressure of the cares and sorrows of our mortal condition, men have at all times, and in all countries, called in some physical aid to their moral consolations—wine, beer, opium, brandy, or tobacco.
Edmund Burke (1729–1797)

Imagination is always the fabric of social life and the dynamic of history. The influence of real needs and compulsions, of real interests and materials, is indirect because the crowd is never conscious of it.
Simone Weil (1909–1943)