downwash वाक्य

:: : : : When the plane's trailing downwash of air pressure has transferred its energy, the downwash seizes to exist.
The damping term is reduced by the downwash effect, and it is difficult to design an aircraft with both rapid natural response and heavy damping.
The V-22's rotor downwash was so strong that it could not land in a desert because it would suck in too much sand.
The resulting vortices change the speed and direction of the airflow behind the trailing edge, deflecting it downwards, and thus inducing downwash behind the wing.
The prototype machines had an upwards-hinged main passenger and cockpit door, which was prone to being slammed shut by the downwash from the rotors.

When helicopters and planes fly low enough, this downwash interacts with the ground ( see the article on ground effect ( aircraft ) for instance ).
With helicopters their downwash can create vortex rings of air that are dangerous, because the air mass in which the copter is in starts to descend rapidly.
The downwash also made it unlikely that the V-22 could be used in sea rescues and would make it difficult for troops to rappel to the ground.
However, an elliptical planform is more efficient as the induced downwash ( and therefore the effective angle of attack ) is constant across the whole of the wingspan.
AERMOD also includes PRIME ( Plume Rise Model Enhancements ) which is an algorithm for modeling the effects of downwash created by the pollution plume flowing over nearby buildings.