english for engineering students pdf

... International Studies ESP : English for Specific Purpose TESP : Teaching English for Specific Purpose HNIVC : Hanoi Industrial Vocational College EFE : English For Engineering ESL : English as a Second ... Language ESOL : English for Speakers of Other Languages EFL : English as a Foreign Language ELT : English Language teaching TESL : Teaching English as a Second Language TESOL : Teaching English to ... the text book English for Engineering (EFE) edited by Tran Lan Phuong used in teaching ESP at the third semester for technical students Though the material has been in use at HNIVC for 5 years

Ngày tải lên: 23/09/2020, 22:56

... the text book English for Engineering (EFE) edited by Tran Lan Phuong used in teaching ESP at the third semester for technical students Though the material has been in use at HNIVC for 5 yearsand ... teaching and learning ESL (English as a Second Language), ESOL (English for Speakers of Other Languages),and EFL (English as a Foreign Language) all refer to the use or study of English by speakerswith ... book for students of HNIVC, so thetype of evaluation chosen for the project is formative evaluation 2.4.4 Models for materials evaluation. Many authors have introduced different models for materials

Ngày tải lên: 08/11/2020, 14:56

... teaching and learningESL (English as a Second Language), ESOL (English for Speakers of Other Languages), and EFL (English as a Foreign Language) refer to the study of English by non-native speakers, ... second-year technical students in our survey.The aims of the course for the second-year technical students at HNIVC are as follows:  Getting students familiar with English as a Foreign Language; ... existing course book for HNIVC students, leading to the selection of formative evaluation as the most suitable approach for this initiative.Numerous authors have proposed various models for materials

Ngày tải lên: 28/06/2022, 10:06

... teaching and learningESL (English as a Second Language), ESOL (English for Speakers of Other Languages), and EFL (English as a Foreign Language) all refer to the use or study of English by speakers ... second- year students who have experienced using the book Informal interview is used to seek for detailed and objective opinions of examples of teachers and students on the material and students‟ ... conditions under which English is taught Currently, global textbooks produced for teaching and learning English as a foreign language in many different countries are criticized for paying too little

Ngày tải lên: 06/12/2022, 08:39

... the text book English for Engineering (EFE) edited by Tran Lan Phuong used in teaching ESP at the third semester for technical students Though the material has been in use at HNIVC for 5 years ... and learning ESL (English as a Second Language), ESOL (English for Speakers of Other Languages), and EFL (English as a Foreign Language) all refer to the use or study of English by speakers ... book for students of HNIVC, so the type of evaluation chosen for the project is formative evaluation 2.4.4 Models for materials evaluation Many authors have introduced different models for materials

Ngày tải lên: 17/12/2023, 02:47

... International Studies ESP : English for Specific Purpose TESP : Teaching English for Specific Purpose HNIVC : Hanoi Industrial Vocational College EFE : English For Engineering ESL : English as a Second ... Language ESOL : English for Speakers of Other Languages EFL : English as a Foreign Language ELT : English Language teaching TESL : Teaching English as a Second Language TESOL : Teaching English to ... the text book English for Engineering (EFE) edited by Tran Lan Phuong used in teaching ESP at the third semester for technical students Though the material has been in use at HNIVC for 5 years

Ngày tải lên: 28/03/2015, 10:27

... more 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 ... angle to Ox Trang 13176 Aerodynamics for Engineering Students and introducing this in Eqn (4.14) gives (4.22) The solution for k d x that satisfies Eqn (4.22) for a given shape of camber line (defining ... pressure: 1 +case p = pUk = 2pU2a Trang 15178 Aerodynamics for Engineering Students The lift per unit span Changing the sign Therefore for unit span (4.34) and this shows a fixed centre of pressure

Ngày tải lên: 08/08/2014, 11:21

... approximation, the C, distributions obtained for symmetrical aerofoils can be used for the wing sections For complete- ness this result is demonstrated formally immediately below However, if this ... method 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 an ... the terms, for example where r = d ( x -XI)' + (z - ~ 1 ) ~ In this way, the trigonometric expressions given above can be rewritten as Trang 7236 Aerodynamics for Engineering Students (5.27)

Ngày tải lên: 08/08/2014, 11:21

... and for air has values between 1 and 0.378 The velocity ratio is the inverse of the density ratio, since by continuity u2/u1 = p 1 / p 2 Therefore, directly from Eqns (6.45) and (6.45a): or for ... 6.16 Algebraic expressions for the wavelets in terms of the flow velocity be obtained by further manipulation of Eqn (6.61) which, for convenience, is recalled in the form: Introduce the velocity ... position under sonic conditions q5, and velocity ratio q/c for a given Mach number may be computed once and for all and used in tabular form thereafter Numerous tables of these values exist but

Ngày tải lên: 08/08/2014, 11:21

... integration of other products vanishes for the same reason as given above for the development leading to Eqn (6.160) Thus (6.161) Now 2 f ~ i d x = 4a2c Trang 5and for a particular section Moment coefficient ... as before: 2 f : & ; - = 4 a z C For the given geometry i.e one equal contribution from each of four flat surfaces, and Le one equal contribution from each of four flat surfaces Therefore ... giving relatively simple for- mulae for the aerodynamic characteristics of aerofoils However, as shown below in Example 6.13 the exact pressure distribution can be readily found for a double-wedge

Ngày tải lên: 08/08/2014, 11:21

... relationship for the seventh-root profile The total skin-friction force coefficient CF for one side of the plate of length L may be found by adding the skin-friction force per unit width for the ... is necessary to formulate semi-empirical approaches for modelling the Reynolds shear stress before one can begin the process of solving Eqns (7.108a,b) The momentum integral form of the boundary-layer ... plotted in Fig 7.40 This quantity is important for engineering calculations of turbulent boundary layers Note that the form adopted in Eqn (7.112) for the near-wall region according to the mixing-length

Ngày tải lên: 08/08/2014, 11:21

... labelled convex, m I4, say; for that labelled linear, m = 1; and for that labelled concave, m N 1/4 One would not normally design a wing for which the flow separates before the trailing edge is ... pressure can be sustained before sonic conditions are reached, resulting in a pronounced peaky pressure distribution For high subsonic Mach numbers, on the * B.S Stratford (1959) The prediction ... pressures are permissible before sonic conditions are reached In this case, therefore, the pressure distribution is very flat An example of the practical application of these ideas for low flight speeds

Ngày tải lên: 08/08/2014, 11:21

... performance a pitch suitable for low-speed fight and take-off is liable to have a poor performance at high forward speeds, and vice versa This was the one factor that limited aircraft performance ... fine pitch for take-off and climb, whereas the other gives a coarse pitch for cruising and high-speed flight Consider Fig 9.6 which shows typical variations of efficiency 7 with J for (a) a ... varied at will between these two values the overall performance J Fig 9.6 Efficiency for a two-pitch airscrew Trang 5J Fig 9.7 Efficiency for a constant-speed airscrew attainable is as given

Ngày tải lên: 08/08/2014, 11:21

... book is intended for students studying for degrees, Higher National Diplomas and Higher National Certificates in aeronautical engineering and will be found of value to those students in related ... experience of teaching aircraft structures I have felt the need for a text- book written specifically for students of aeronautical engineering Although there have been a number of excellent books ... Trang 2Aircraft Structures for engineering students Trang 3To The Memory of My Father Trang 4OXFORD AMSTERDAM BOSTON LONDON NEWYORK PARIS Trang 5Butterworth-Heinemann

Ngày tải lên: 08/08/2014, 11:21

... the potential energy of the applied external forces Hence, for the single member-force configuration of Fig 4.l(a) T P E = U + V = s: P d y - P y For a general system consisting of loads P I ... principle of virtual forces For the case where the particle is in equilibrium the resultant P R of the forces must be zero and Eq (4.7) reduces to The principle of virtual work may therefore be stated ... and force boundary conditions of the bar We note here that it is unnecessary to investigate compatibility as we are concerned with displacement forms which are single valued functions and therefore

Ngày tải lên: 08/08/2014, 11:21

... 36.6 Buckling of thin plates 17 1 for a given value of a / b To determine the minimum value of k for a given value of a / b we plot k as a function of a / b for different values of m as shown ... and for m = 2, a / b = v% = 2.45 and so on For a given value of a / b the critical stress, o C R = N x , C R / t , is found from Eqs (6.55) and (5.4) Thus In general, the critical stress for ... critical stress for a uniform rectangular plate, with various edge sup- ports and loaded by constant or linearly varying in-plane direct forces (N.y, N,,) or constant shear forces (N1,) along its

Ngày tải lên: 08/08/2014, 11:21

... Flight envelopes are therefore drawn for a range of altitudes from sea level to the operational ceiling of the aircraft Several problems require solutions before values for the various load factors ... factors of safety and provide for various contingencies and uncertainties which are discussed in greater detail in Section 8.2 The basic strength and fight performance limits for a particular aircraft ... ribs for the European Airbus (courtesy of British Aerospace) The different structural requirements of aircraft designed for differing operational roles lead to a variety of wing constructions For

Ngày tải lên: 08/08/2014, 11:21

... ns h i ps for open and single cell closed section thin-walled beams We shall establish in this section the equations of equilibrium and expressions for strain which are necessary for the analysis ... the resulting equation and may therefore be eliminated to leave & For the channel section, Cx is an axis of symmetry so that Ixy = 0 Also S, = 0 and therefore Eq (9.34) simplifies to where ... origin for s may be taken to coincide with a point of zero warping which will occur where an axis of sym- metry and the wall of the section intersect For unsymmetrical sections the origin for s

Ngày tải lên: 08/08/2014, 11:21

... methods are ideally suited for expressing structural theory and for expressing the theory in a form suitable for numerical solution by computer A structural problem may be formulated in either of ... symmetrical panel has the form shown in Fig P 1 1.7 The longerons are of constant area, B1 for the edge member and B2 for the central members, and the sheet is of uniform thickness t The panel ... similar pattern to that described for a spring assembly A member in such a framework is assumed to be capable of carry- ing axial forces only and obeys a unique force-deformation relationship given

Ngày tải lên: 08/08/2014, 11:21

... the force-displacement (stiffness) relationship for the beam element shown in Fig. P.12.6(a) may be expressed in the following form: obtain the force-displacement (stiffness) relationship for ... the deflections under the loads, the forces in the ties and all other information necessary for sketching the bending moment and shear force diagrams for the beam. Neglect axial effects in ... calculate the forces in all the members. For member 123 plot the shear force and bending moment diagrams. Briefly outline the sequence of operations in a typical computer program suitable for linear

Ngày tải lên: 08/08/2014, 11:21