... chances for engineers and technical professionals to convey technical information in English for various purposes. Therefore, besides learning general English as an international language, engineering ... (1) Preparation Stage This is the stage for building up students& apos; confidence or reshaping their perceptions of English writing. Some engineering students may think that English writing ... details. Students can begin by writing two to three sentences to support the stated generalization. For example: • There are several linguistic factors that make it difficult for a foreign student...
Ngày tải lên: 06/09/2013, 05:10
Tài liệu aerodynamics for engineering students 5e ppt
... Houghton, E.L. (Edward Lewis) Aerodynamics for engineering students. - 5th ed. 1 Aerodynamics I Title I1 Carpenter, P.W. 629.1’323 - For information on all Butterworth-Heinemann publications ... for Engineering Students 1.4.2 Dimensional analysis applied to aerodynamic force In discussing aerodynamic force it is necessary to know how the dependent variables, aero- dynamic force ... represent the names of these units by abbreviations: kg for kilogram m for metre s for second "C for degree Celsius K for Kelvin The degree Celsius is one one-hundredth part of...
Ngày tải lên: 13/02/2014, 09:20
Aerodynamics for engineering students - part 2 pptx
... Aerodynamics for Engineering Students i.e. 12 1 PI + -pv, +PPI =p2 + -pv; + pgzz 2 2 In the foregoing analysis 1 and 2 were completely arbitrary choices, and therefore the same ... 68 Aerodynamics for Engineering Students Therefore, true air speed = Ma = 0.728 x 340.3 248 m s-' = 89 1 km h-' In this example, ~7 = 1 and therefore there is no ... C.V. -, (ii) = Body force + pressure force + viscous force (iii) (iv) (4 (2.59) We will consider now the evaluation of each of terms (i) to (v) in turn for the case Term (i) is...
Ngày tải lên: 08/08/2014, 11:21
Aerodynamics for engineering students - part 3 pot
... radius of the equipotential Q = 0 for the isolated source and the isolated sink, but not for the combination. 1 10 Aerodynamics for Engineering Students demonstrating the validity ... radius of the equipotential q5 = 0 for the isolated source and the isolated sink, but not for the combination. 120 Aerodynamics for Engineering Students Method (see Fig. 3.14) ... contrast, for the Cartesian system all three coordinate surfaces are X Fig. 3.27 Cylindrical coordinates 138 Aerodynamics for Engineering Students planes. As a consequence for the Cartesian...
Ngày tải lên: 08/08/2014, 11:21
Aerodynamics for engineering students - part 4 doc
... general conformal transformation that gave a family of aerofoils with trailing edges of finite angle. Aerofoil theory based on conformal transformation became a practical tool for aerodynamic ... some general form given by, say, (4.61) V - = B~ + CB, cosne V Fig. 4.19 170 Aerodynamics for Engineering Students iy z plane 0 U Fig. 4.8 Zhukovsky transformation, of the ... at angle Q to Ox 178 Aerodynamics for Engineering Students The lift per unit span = apU2clT(l +cosO)dO = 7i-apU2c It therefore follows that for unit span I CL = ($q) =27ra The...
Ngày tải lên: 08/08/2014, 11:21
Aerodynamics for engineering students - part 5 pot
... planforms with the same elliptic chord distribution 270 Aerodynamics for Engineering Students Segment i trailing edge Fig. 5.46 Panel method applied to a wing-body combination For ... 255-274. 250 Aerodynamics for Engineering Students - - Incidence c e Lc - Incidence m 0 c 0 c e Lc - P Fig. 5.34 Lift-versus-incidence curve for an aerofoil section of ... is certainly suitable for wings with a simple planform shape, e.g. a rectangular wing. Some wing shapes for which it is not at all suitable are shown in Fig. 5.22. Thus for the general case...
Ngày tải lên: 08/08/2014, 11:21
Aerodynamics for engineering students - part 6 potx
... from Eqn (6. lo), with q substituted for p, that (6.62) 31 2 Aerodynamics for Engineering Students Fig. 6.15 or in pressure-coefficient form (6.63) The behaviour of the flow ... uniform throughout the field. Then, from the velocity diagram after the wave: (q+sq)2=(u+Su)2+t2 Fig. 6.13 332 Aerodynamics for Engineering Students surface reaches sonic conditions before ... 300 Aerodynamics for Engineering Students or P1-7@-1 - - for air P2 6 (6.44a) 6.4.4 Density jump across the normal shock Using the previous results, substituting for p2/p1 from Eqn...
Ngày tải lên: 08/08/2014, 11:21
Aerodynamics for engineering students - part 7 docx
... numerically in the forms: (7.45) UX f50.99 = 5.0dK 370 Aerodynamics for Engineering Students Calculate the pressure and Mach number along the surface as functions of x/c for the case of ... much lower Reynolds number than for the smooth sphere. (The photographs were taken by H. Werle at ONERA, France.) 376 Aerodynamics for Engineering Students YA Fig. 7.2 effects ... 404 Aerodynamics for Engineering Students = 15 000 I , = 30 I000 Fig. 7.18 Flow past a sphere: In both cases the flow is from left to right. ReD = 15 000 for (a) which uses...
Ngày tải lên: 08/08/2014, 11:21