Results 111 to 120 of about 73,982 (212)

A compressible solution of the Navier-Stokes equations for turbulent flow about an airfoil [PDF]

open access: yes
A compressible time dependent solution of the Navier-Stokes equations including a transition turbulence model is obtained for the isolated airfoil flow field problem. The equations are solved by a consistently split linearized block implicit scheme.
Gibeling, H. J., Shamroth, S. J.
core   +1 more source

High Reynolds number tests of a Douglas DLBA 032 airfoil in the Langley 0.3-meter transonic cryogenic tunnel [PDF]

open access: yes
A wind-tunnel investigation of a Douglas advanced-technology airfoil was conducted in the Langley 0.3-Meter Transonic Cryogenic Tunnel (0.3-m TCT). The temperature was varied from 227 K (409 R) to 100 K (180 R) at pressures ranging from about 159 kPa (1 ...
Bui, Minh H.   +4 more
core   +1 more source

New Progress in Research on Dynamic Stall of Helicopter Rotors

open access: yesNanjing Hangkong Hangtian Daxue Xuebao
For over half a century, rotor dynamic stall has remained a key research focus and challenge in helicopter aerodynamics. Through persistent and in-depth exploration, researchers have achieved significant progress in measurement and prediction of rotor ...
JING Simeng   +4 more
doaj   +1 more source

A composite structured/unstructured-mesh Euler method for complex airfoil shapes [PDF]

open access: yes
A general two-dimensional Euler zonal method has been developed for computing flows about complex airfoil geometries such as multielement and iced airfoils.
Chen, L. T., Hefazi, H.
core   +1 more source

Family of airfoil shapes for rotating blades [PDF]

open access: yes, 1983
An airfoil which has particular application to the blade or blades of rotor aircraft such as helicopters and aircraft propellers is described. The airfoil thickness distribution and camber are shaped to maintain a near zero pitching moment coefficient ...
Noonan, K. W.
core   +1 more source

Aerodynamic data banks for Clark-Y, NACA 4-digit and NACA 16-series airfoil families [PDF]

open access: yes
With the renewed interest in propellers as means of obtaining thrust and fuel efficiency in addition to the increased utilization of the computer, a significant amount of progress was made in the development of theoretical models to predict the ...
Camba, J., III   +2 more
core   +1 more source

Numerical and Experimental Investigation of Thickness Effect on the Cambered Airfoils at Low Reynolds Numbers

open access: yesHavacılık ve Uzay Teknolojileri Dergisi
In this study, experimentaland numerical study for the cambered airfoils was conducted at Re = 1.5x105and Re = 2.5x105and different angles of attack.
Muhammer Ayvazoğlu   +7 more
doaj  

Leading-edge pressure measurements of airfoil vortex interaction [PDF]

open access: yes
Experimental pressure-differential measurements made at 10% chord of an airfoil-vortex interaction are presented. A line vortex was oscillated over an airfoil perpendicular to the span and parallel to the chord.
Walsh, R. G., Jr.
core   +1 more source

Adaptation of the Theodorsen theory to the representation of an airfoil as a combination of a lifting line and a thickness distribution [PDF]

open access: yes
The theory provides a direct method for resolving an airfoil into a lifting line and a thickness distribution as well as a means of synthesizing thickness and lift components into a resultant airfoil and computing its aerodynamic characteristics ...
Barger, R. L.
core   +1 more source

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