angle of attack

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angle of attack

n.
The acute angle between the chord of an airfoil and a line representing the undisturbed relative airflow.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

angle of attack

n
(Aeronautics) the acute angle between the chord line of an aerofoil and the undisturbed relative airflow. Also called: angle of incidence
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

an′gle of attack′


n.
the acute angle between the chord of an aircraft wing or other airfoil and the direction of airflow.
[1905–10]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.angle of attack - the acute angle between the direction of the undisturbed relative wind and the chord of an airfoil
angle of incidence, incidence angle - the angle that a line makes with a line perpendicular to the surface at the point of incidence
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Preliminary investigations in the two plane crashes divulge that there were problems with these so-called angles of attack sensors early in the flights, activating new anti-stall software that sent the planes into unrecoverable nose-dives, The New York Times reported.
The focus of the update is the Maneuvering Characteristics Augmentation System, which was chiefly designed to counter the MAX's tendency to pitch up at high angles of attack while being hand flown and push the nose over in the case of an impending stall.
Additionally, in order to understand the performance of each inlet geometry at different angles of attack, computations are carried out at 0deg and 5deg angle of attack values with keeping side slip angle as 0deg.
After all, what single word, if any, concisely describes what happens when air flows over an airfoil at low angles of attack but then separates and stops flowing as that angle of attack exceeds a specific value?
A few studies have also investigated the performance of small rotors at various angles of attack. Theys et al.
"However Pattison has worked his socks off even when injured and he showed a great tempo as he worked at range and then got inside again, working good angles of attack to keep Malloy on edge.
At very large angles of attack, the blade "stalls" and the lift decreases again.
It should be noticed that (10) has neglected the higher order terms of [DELTA][alpha], which is validated to be accurate enough to simulate linear or weakly nonlinear cases at small angles of attack. The static derivative [C.sub.m[alpha]] is readily solved with the unsteady and steady aerodynamic coefficients by
From the compared figures (Figures 6 and 7), the aerodynamic model has good accuracy, which can be applied to calculate the nonlinear unsteady aerodynamics caused by large angles of attack.
The acceptable range of angles of attack is fairly small, and gets considerably smaller at higher speeds, such as cruise speed.
The angles of attack used for the numerical study vary from 0[degrees] to 180[degrees] with increments of 5[degrees].
The operation of gas-turbine engine compressor aerofoil grids at supercritical angles of attack (angles of flow acceleration) is connected with the appearance of intensive areas of flow separation on the blade surfaces.