downwash वाक्य
उदाहरण वाक्य
मोबाइल
- :: : : : 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.
- However, some aircraft, such as the Lockheed P-38 Lightning had propeller rotation purposely reversed to reduce downwash on the central horizontal stabilizer, to make for better gunnery.
- Control was to be provided by cables that could alter the pitch of the rotor blades, and by steerable vanes at either end of the machine intended to direct the downwash of the rotors.
- Trials done in Kosovo for the United Nations have demonstrated that the ability to fly low and slow without the downwash and vibrations of a helicopter make the airship suited for mine detection, Stroehle said.
- In mathematical terms, the local induced change of angle of attack \ alpha _ i on a given section can be quantified with the integral sum of the downwash induced by every other wing section.
- The wing has a built-in mid-span twist to offset the effects of the canard's downwash, with the inboard having 2 degrees less twist than the outboard portion of the wing.
- In late 1949 low-speed wind tunnel tests showed that a vortex was generated by the wing which caused a large downwash on the tailplane; this issue was solved by lowering its height below the wing.
- This fan forces low pressure air through two slots on the right side of the tailboom, causing the downwash from the main rotor to hug the tailboom, producing lift, and thus a measure of directional control.
- The Phillips 66 Company requested, and the FAA approved and implemented, a 1-mile no-fly zone around the plant to prevent engine vibration and / or helicopter rotor downwash from dislodging any of the wreckage.
- Also, the energy of the downwash is still dissipated, thus when it has no more energy, it no longer transfers momentum to the atmosphere .-talk ) 16 : 20, 19 August 2012 ( UTC)
- In aeronautics "'downwash "'is the change in direction of air deflected by the aerodynamic action of an airfoil, wing or helicopter rotor blade in motion, as part of the process of producing lift.
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