Theoretical Aerodynamics by Ethirajan Rathakrishnan

By Ethirajan Rathakrishnan

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For air, the kinematic viscosity ν is small and Re is large unless Vl is small. 4) becomes: where l2 has been replaced by the plan area S, a proportional number of the same dimensions, and f(M, Re) is a function, whose form is not determined by the present method, with values which are independent of physical units. 5) is called the (dimensionless) coefficient of the aerodynamic force F ad. 3, and the flow is termed incompressible. Thus, for an incompressible flow, the aerodynamic force coefficient is a function of Reynolds number only.

He is a fellow of many professional societies, including the Royal Aeronautical Society. Professor Rathakrishnan serves as editor-in-chief of the International Review of Aerospace Engineering (IREASE) Journal. He has authored nine other books: Gas Dynamics, 4th ed. (PHI Learning, New Delhi, 2012); Fundamentals of Engineering Thermodynamics, 2nd ed. (PHI Learning, New Delhi, 2005); Fluid Mechanics: An Introduction, 3rd ed. (PHI Learning, New Delhi, 2012); Gas Tables, 3rd ed. , Tokyo, Japan, 2008); Gas Dynamics Work Book (Praise Worthy Prize, Napoli, Italy, 2010); Applied Gas Dynamics (John Wiley, New Jersey, USA, 2010); and Elements of Heat Transfer, (CRC Press, Taylor & Francis Group, Boca Raton, USA, 2012).

In this definition of aerodynamic force, the aircraft is considered to be moving with constant velocity V in stagnant air. Instead, we may imagine that the aircraft is at rest with the air streaming past it. In this case, the air velocity over the aircraft will be −V. It is important to note that the aerodynamic force is theoretically the same in both cases; therefore we may adopt whichever point of view is convenient for us. In the measurement of forces on an aircraft using wind tunnels, this principle is adopted, that is, the aircraft model is fixed in the wind tunnel test-section and the air is made to flow over the model.

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Theoretical Aerodynamics is a undemanding textual content for a whole path on theoretical aerodynamics. the writer systematically introduces aerofoil idea, its layout good points and function features, starting with the fundamentals required, after which steadily continuing to raised point. the maths concerned is gifted in order that it may be very easily, even by means of people who find themselves no longer robust in arithmetic. The examples are designed to mend the idea studied in a good demeanour. in the course of the e-book, the physics in the back of the methods are in actual fact defined. each one bankruptcy starts with an advent and ends with a precis and exercises.

This publication is meant for graduate and complex undergraduate scholars of Aerospace Engineering, in addition to researchers and architects operating within the zone of aerofoil and blade design.

  • Provides an entire evaluation of the technical phrases, vortex thought, lifting line thought, and numerical methods
  • Presented in  an easy-to-read variety making complete use of figures and illustrations to augment knowing, and strikes good easier to extra complicated topics
  • Includes a whole part on fluid mechanics and thermodynamics, crucial historical past issues to the idea of aerodynamics
  • Blends the mathematical and actual thoughts of layout and function points of lifting surfaces, and introduces the reader to the skinny aerofoil thought, panel technique, and finite aerofoil theory
  • Includes a options guide for end-of-chapter workouts, and Lecture slides at the book’s spouse Website