QUÉ SIGNIFICA DOWNWASH EN INGLÉS
Downwash
En aeronáutica, el downwash es el cambio en la dirección del aire desviado por la acción aerodinámica de una paleta aerodinámica, ala o helicóptero en movimiento, como parte del proceso de producción de elevación. El levantamiento sobre el perfil aerodinámico es un ejemplo de aplicación de la ley de conservación del momento - la fuerza requerida para crear el downwash es igual en magnitud y opuesta en dirección a la fuerza de elevación en el perfil aerodinámico. La elevación de un perfil aerodinámico es también un ejemplo del teorema de Kutta-Joukowski; la condición de Kutta explica la existencia de un downwash en el borde de salida del ala y la velocidad más rápida del aire cuando pasa por encima del perfil aerodinámico; El principio de Bernoulli explica por qué la presión en el aire de movimiento más rápido es menor que la presión en el aire de movimiento lento por debajo del ala. La presión del aire por encima de la superficie aerodinámica equivale a una fuerza neta descendente, y la presión del aire por debajo de la superficie aerodinámica equivale a una fuerza ascendente. En vuelo, esta última fuerza es mayor que la primera, y la diferencia entre ambas es elevación. Los escritos modernos coinciden en que tanto el principio de Bernoulli como las leyes de Newton son relevantes y cualquiera puede ser usado para describir correctamente la elevación.
definición de downwash en el diccionario inglés
La definición de downwash en el diccionario es la desviación hacia abajo de un flujo de aire, especialmente uno causado por el ala de un avión.
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10 LIBROS DEL INGLÉS RELACIONADOS CON «DOWNWASH»
Descubre el uso de
downwash en la siguiente selección bibliográfica. Libros relacionados con
downwash y pequeños extractos de los mismos para contextualizar su uso en la literatura.
1
Environmental Engineers' Handbook, Second Edition
A wake that causes downwash usually occurs as the result of one of three
physical conditions: 1) the stack, referred to as stack-tip downwash, 2) local
topography, or 3) nearby large structures or building downwash. Figure 5.8.10
shows ...
David H.F. Liu, Bela G. Liptak,
1997
We have seen that the downwash induced on an aft tail by the main wing has a
significant effect on the trim and static stability of an airplane. This downwash
reduces the effective angle of attack for the horizontal tail and also reduces its ...
3
Airplane Flight Dynamics and Automatic Flight Controls
Jan Roskam. TABLE OF CONTENTS TO PARTS I AND II PARTI SYMBOLS AND
ACRONYMS (PART I) vii INTRODUCTION 1 1. EQUATIONS OF MOTION AND
AXIS SYSTEMS 3 1 . 1 COORDINATE SYSTEMS AND EXTERNAL FORCES 3
1.2 ...
4
The Climate Near the Ground
Various stack shapes and their properties with regard to aerodynamic downwash
: (a) flared stack, poor design, pronounced stack downwash induced; (b) straight
stack, fair design, some stack downwash; (c) tapered stack, good design, little ...
Rudolf Geiger, Robert H. Aron, Paul Todhunter,
2003
To avoid stack -tip downwash, environmental engineers should consider the ratio
of emission velocity (vs) to wind speed velocity at the stack height (us) in the
stack design. If v, < 1.5 us, then the physical stack height should be adjusted by
the ...
David H.F. Liu, Bela G. Liptak,
1999
6
A Gallery of Fluid Motion
Hiroshi Higuchi Syracuse University A simple water channel experiment shows
the phenomenon of tip vortices and downwash similar to that behind an aircraft
despite large differences in scaling parameters. In this study, a rectangular flat ...
7
Automatic Control of Aircraft and Missiles
The result of this wing vortex system is to induce a downward component of
velocity to the air flow, which is referred to as downwash. Actually, as shown by
Prandtl1 in his lifting line theory, the vortex is not restricted to the wing tips but
consists ...
8
Pilot's Reference Guide
These vortices are drawn downwards because their outbound side rubs against
the surrounding air masses and their inbound side is drawn downwards by the
wing's downwash. The downwash is used to explain the induced drag and
ground ...
Michael Grossrubatscher,
2008
In addition. the downwash angle for the flow at the wing location for an clliptically
shaped wing is predicted to be £w = CL/nA (9.27) II" the tail is fairly far behind the
wing, the downwash angle at the tail is theoretically about twice the downwash ...
10
Aerodynamics for Engineering Students
5.5 Relationship between Spanwise Loading and Trailing Vorticity 299 (1 —s/2'I/
C FIGURE 5.19 a WCP V 2, ++++++++IIIIIIIIII 4__ WI W=2wCP wIzero cp FIGURE
5.20 Variation in magnitude of downwash in front of and behind the wing.
E. L. Houghton, P. W. Carpenter, Steven Collicott,
2012
10 NOTICIAS EN LAS QUE SE INCLUYE EL TÉRMINO «DOWNWASH»
Conoce de qué se habla en los medios de comunicación nacionales e internacionales y cómo se emplea el término
downwash en el contexto de las siguientes noticias.
A quiet afternoon along the Tule
The downwash of the rotor plus a light breeze kept buffeting the helicopter as he descended closer and closer. The pilot was working hard to ... «Porterville Recorder, Jul 15»
Airbus Helicopters Unveils Bluecopter Demonstrator
... where the horizontal stabilizer is outside the main rotor's downwash; an active rudder; and water-based paint. Dumont said the program is on ... «Aviation International News, Jul 15»
New coastguard rescue helicopters could cause Marton Road …
“The larger size and weight of the Sikorsky S92 aircraft creates a slightly stronger downwash than the Sea King. “The helipad at James Cook ... «Gazette Live, Jul 15»
Dangerous welcome
A gust of wind and the downwash from his craft caused a red-carpet laid out for the minister to literally get airborne, and entangled with the ... «The Statesman, Jun 15»
Plastic sheet in Gadkari's chopper blade
The carpet, he said, could have flown upwards into the rotors under the influence of what aviation specialists call the helicopter's "downwash" ... «Calcutta Telegraph, Jun 15»
Marines Testing Operating from Foreign Ships, Near-Forgotten …
Because the MV-22 creates a lot of heat and a tremendous downwash, Naval Air Systems Command (NAVAIR) needs to carefully study ... «USNI News, Jun 15»
Amputee Para set to take part in ten mile obstacle race
He was injured by a landmine set off by the downwash of a Chinook helicopter which was sent to rescue injured soldiers. The aircraft was trying ... «Clacton and Frinton Gazette, Jun 15»
Raytheon Wins Small Contract For Huge Program: SDB II Exports By …
I just didn't think it was that hot and I figured the downwash (or at lest the turbulence) would dissipate/dilute a good chunk of the heat. vegass04 ... «Breaking Defense, Jun 15»
Malta's giddy high-rise future
It's called the Venturi Effect or Downwash. Chairs and glasses can be literally blown off tables due to the changes in wind conditions. «MaltaToday, Jun 15»
New Study Says a Working Mom Is a Plus for Kids
I love the image of the helicopter parent, the howling downwash from their blades stripping every nascent bud of independence from the limbs ... «Huffington Post, May 15»