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1
Airplane Design: Preliminary calculation of aerodynamic, ...
4.3.3.1 Fuselage zero-lift drag coefficient 49 4.3.3.2 Fuselage drag coefficient
due to lift 52 4.3.4 The Area Rule Concept 57 4.4 EMPENNAGE DRAG
COEFFICIENT PREDICTION 66 4.4.1 Subsonic Empennage Drag Coefficient 66
4.4.1.1 ...
2
Theory of Wing Sections, Including a Summary of Airfoil Data
Ira Herbert Abbott. of minimum drag coefficient with Reynolds number for several
wing sections is shown in Fig. 66. The drag coefficient generally decreases with
increasing Reynolds number up to Reynolds numbers of the order of 20 million.
We assume that the drag coefficient (23) can be expressed as the sum of a
frictional-drag coefficient, depending on the Reynolds number, plus a residual-
drag coefficient which now must depend on the Froude number. Thus, we adopt ...
John Nicholas Newman, 1977
4
Wind Loading of Structures
The effect of aspect ratios less than 20 is significant on the effective total drag
coefficient (see Figures 4.10 and 4.19). Other cross-sections may require wind-
tunnel tests to determine drag coefficients. The mean or time-averaged drag force
per ...
5
Engineering Fluid Mechanics
The corresponding result for drag coefficient of a circular cylinder is CD = 87t(1 -
0.87/S2)/S Re, Re < 1, (7.5.4) where S = -0.07721+ In (8/Re). Here the Reynolds
number is based on the cylinder diameter. This result was found byS.
The sharp drop off of the drag coefficient at Re ≈ 3 · 105 is due to the transition of
the previous laminar boundary layer on the sphere to a turbulent boundary layer.
The shear stresses in the turbulent boundary layer are larger, and the outer ...
Joseph Spurk, Nuri Aksel, 2008
7
Multiphase Flows with Droplets and Particles
There is reason to doubt their validity in that they predict a drag coefficient of 0.48
for a Reynolds number of 500 and relative turbulence intensity of 0.07. This is
less than the standard drag coefficient for a sphere at this Reynolds number.
Clayton T. Crowe, John D. Schwarzkopf, Martin Sommerfeld, 1997
8
Debris Forces on Highway Bridges
Hsieh (1964), using cylindrical model piers, found that the Froude number of the
flow, as well as boundary geometry, influences the drag coefficient for cylindrical
piers. He also found that the drag coefficient decreased with increase in depth ...
9
A Brief Introduction To Fluid Mechanics
which can be rewritten in terms of the pressure drag coefficient, CDp, as Dp d p
12U2A p cos dA 12U2A Cp cos dA A V9.7 Skydiving practice F I G U R E 9.13
Drag coefficient for an ellipse with the characteristic area either the frontal area, ...
Donald F. Young, Bruce R. Munson, Theodore H. Okiishi, 2010
10
Principles of Naval Weapon Systems
Angle of Attack ( Degrees) FIGURE 14-29 Typical drag characteristics In a
fashion similar to other aerodynamic forces, drag forces may be analyzed using a
drag coefficient, which is independent of dynamic pressure and surface area.
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The 2015 McLaren 650S Spider supercar is even more badass than …
The 650S benefits from the same slippery 0.36 drag coefficient as the previous McLaren MP4-12C, except that the 650S wrings 24 percent ... «Digital Trends, 7月 15»
Fiat Made A Female Terminator Long Before Schwarzenegger Met …
It was fast enough thanks to its superb drag coefficient, handled nicely with MacPherson struts up front, and on the inside, it was way more ... «Jalopnik, 7月 15»
The all-new Audi A4
The A4 Sedan has the best drag coefficient in its class at 0.23, and the A4 Avant pierces the air almost as cleanly with a 0.26 figure. Compared ... «durhamregion.com, 7月 15»
The Only Black Maserati MC12 Will Go Under the Hammer - Photo …
They may have built it on the chassis of the Enzo, but the final two-seater is much larger and has a lower drag coefficient. Longer, wider, taller ... «autoevolution, 7月 15»
Audi reveals new A4 for South Africa SEE PAGE 11
Audi says its A4 sedan has the “best drag coefficient in its class at 0.23”. Downsizing engines is prominent at the Volkswagen Group with the ... «News24, 7月 15»
Five properties of physics that affect your gas mileage
The drag coefficient of your car is basically measuring how easily air goes around it. “You want as little frontal surface area as possible. «Nanowerk, 7月 15»
BMW Issues Statement On 588 MPG EfficientDynamics Plug-In …
... achieve a drag coefficient of 0.18, optimized aerodynamics and a plug-in hybrid drive with significantly increased range using electric power. «InsideEVs, 7月 15»
Audi reveals new A4 for South Africa
Audi says its A4 sedan has the “best drag coefficient in its class at 0.23”. Downsizing engines is prominent at the Volkswagen Group with the ... «News24, 7月 15»
Meet The Man Who's Overseeing PlayStation's Evolution
It's a tough job, when you're already on an excited curve, you don't want to be seen as a drag coefficient," says Layden. "It was perhaps easier ... «Fast Company, 7月 15»
All-new Audi A4
Along with weight savings of up 120kg, Audi claims that the new styling will offer greater fuel efficiency thanks to its lowered drag coefficient ... «The Sun Daily, 7月 15»
