Results 141 to 150 of about 4,525 (199)

Fighting crosswinds in cycling: A matter of aerodynamics

Journal of Science and Medicine in Sport, 2023
The main goal of this study was to compare the aerodynamic optimization level in echelon-formation strategy for riders fighting against a crosswind from the best (echelon or diagonal paceline) to the worst riders' configuration (guttered riders).The case reported herein concerned a group of 5 cyclists riding at 30 km/h with a 30 km/h crosswind oriented
Fabien, Beaumont, Fabien, Bogard, Sébastien, Murer, Guillaume, Polidori   +3 more
openaire   +2 more sources

Development of crosswind spoiler

JSAE Review, 1996
Aerodynamic steady flow simulations for One-Box type automobiles in crosswind conditions are carried out using the k–[epsilon] turbulence model and a third-order upwind scheme with modified production method. The factor of yawing moment is observed and an effective device (Crosswind Spoiler) for reducing yawing moment is found by these numerical ...
K OKUMURA, T KURIYAMA, A KATO, Y HAYASHI
openaire   +1 more source

Laser-Doppler measurement of crosswind velocity

Applied Optics, 1982
There is a need for the remote sensing of local wind velocities over distances of hundreds of meters, and laser-Doppler anemometry (LDA) has been suggested as a suitable measuring technique. In this paper the major features of an LDA system optimized for crosswind velocity measurements are presented. Computer programs based on Mie scattering theory are
F, Durst, B M, Howe, G, Richter
openaire   +2 more sources

Crosswinds

1993
"H[starred review] Powerful and rich, this outstanding contribution to theater arts is recommended for contemporary literature and black studies collections." -Library JournalEdited by award-winning U.S. playwright William Branch, this is a landmark collection of plays addressing various aspects of the global black experience by outstanding black ...
openaire   +1 more source

A comparison of scintillation crosswind methods

IGARSS '96. 1996 International Geoscience and Remote Sensing Symposium, 2002
Shimmering of distant objects on a hot day or the twinkling of stars is familiar to most people. These visual effects, known as scintillation, are caused by the drift of refractive-index irregularities in the atmosphere. Analysis of scintillation phenomena provide a method for remotely sensing the atmosphere, since this effect is related to turbulence ...
Poggio, Lionel, Furger, Markus, Graber, Werner K.   +2 more
openaire   +2 more sources

Crosswind Feedforward Control – A Measure to Improve Vehicle Crosswind Behaviour

Vehicle System Dynamics, 1994
SUMMARY The theory of crosswind feedforward control was explained using the example of a vehicle with active front-wheel steering. Beforehand, the calculation formulas and frequency responses of the transient crosswind force and of the wind yaw moment acting on the vehicle were derived using the example of a simple vehicle fluid model. The influence of
openaire   +1 more source

Bifurcation of volcanic plumes in a crosswind

Bulletin of Volcanology, 1994
Bent-over buoyant jets distorted by a crosscurrent develop a vortex pair structure and can bifurcate to produce two distinct lobes which diverge from one another downwind. The region downwind of the source between the lobes has relatively low proportions of discharged fluid.
Ernst, GGJ, Davis, JP, Sparks, RSJ
openaire   +1 more source

Caught in the Crosswinds of the Atlantic

Journalism History, 2011
John Brown Russwurm (1799-1851), Freedoms Journal, and African Colonization This article reassesses the career at Freedom's Journal of John B. Russwurm, co-founder of America's first black newspaper in New York City. Rather than being a convert to emigrationism, he counted among his long-term associates several who were actively engaged in promoting ...
openaire   +1 more source

The driver as a sensor for crosswind sensitivity

ATZ worldwide, 2002
There are currently no standardized criteria for evaluating a vehicle’s crosswind behaviour. The application of conventional criteria to some vehicles results in different — and in some cases even contradictory — evaluations. The Research Institute of Automotive Engineering and Vehicle Engines Stuttgart (FKFS) of Stuttgart University is developing an ...
Andreas Wagner, Jochen Wiedemann, Jens Neubeck   +2 more
openaire   +1 more source

Coherent lidar crosswind sensing

SPIE Proceedings, 1998
Range-resolved crosswind measurements are required for improved ballistics accuracy in a variety of planetary boundary layer applications. In these environments, the effects wind turbulence can cause large errors in estimates derived using conventional Velocity Azimuth Display (VAD) lidar techniques.
Philip Gatt, J. Alex L. Thomson, Stephen M. Hannon   +2 more
openaire   +1 more source