03 Sept 1 - Introduction to Aerodynamics

03 Sept 1 - Introduction to Aerodynamics - AOE...

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Click to edit Master subtitle style AOE 2104--Aerospace and Ocean Engineering Fall 2009 Virginia Tech 1 September 2009 Lecture 2 AOE 2104 Introduction to Aerospace Engineering Lecture 3 Basic Aerodynamics
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Click to edit Master subtitle style Virginia Tech Reminder: The first homework assignment is due AT THE BEGINNING OF NEXT CLASS!! Also I would appreciate any feedback on the class that you have. You are welcome to see me after class, tell me during class, or send me an email. AOE 2104--Aerospace and Ocean Engineering Fall 2009 1 September 2009 Lecture 2
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Click to edit Master subtitle style Virginia Tech 3 steps to determine p, ρ , and T at any altitude ? 2 equations used to construct the standard atmosphere model ? Name and define the different types of altitudes. 2 types of regions found in the temperature variations with altitude and their characteristics ? Any questions ? Standard Atmosphere AOE 2104--Aerospace and Ocean Engineering Fall 2009 1 September 2009 Lecture 2
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Click to edit Master subtitle style Virginia Tech Basic Aerodynamics AOE 2104--Aerospace and Ocean Engineering Fall 2009 1 September 2009 Lecture 2
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Click to edit Master subtitle style Virginia Tech Basic Aero – Why? How? What do we have so far? Why are we looking into aerodynamics? To determine the forces acting on a vehicle in flight Remember aerodynamic forces arise from two natural phenomena How are we going to proceed ? l Using Laws of Physics to quantify the interaction between the vehicle and the environment it is evolving in. What do we have so far ? AOE 2104--Aerospace and Ocean Engineering Fall 2009 1 September 2009 Lecture 2
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Click to edit Master subtitle style Virginia Tech Our Aerodynamic Tool Box Four aerodynamic quantities that define a flow field Steady vs unsteady flow Streamlines Sources of aerodynamic forces Equation of state for perfect gases Hydrostatic Equation Standard Atmosphere Model 6 different altitudes AOE 2104--Aerospace and Ocean Engineering Fall 2009 1 September 2009 Lecture 2
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Click to edit Master subtitle style Virginia Tech Aerodynamic Tools Needed: Governing Laws We are going to need the 3 following physical principles to describe the interaction between the vehicle and its associated flow field: Conservation of Mass Continuity Equation (§§ 4.1-4.2) Newton’s 2nd Law (and Conservation of Momentum) Euler’s and Bernoulli’s Equations (§§ 4.3-4.4) Conservation of Energy Energy Equation (§§ 4.5-4.7) AOE 2104--Aerospace and Ocean Engineering Fall 2009 1 September 2009 Lecture 2
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Virginia Tech Conservation of Mass – The Continuity Equation Physical Principle: Mass can neither be created nor destroyed (in other words, input = output). O
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This note was uploaded on 04/04/2010 for the course ESM 2214 taught by Professor Lesko during the Spring '10 term at Virginia Tech.

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03 Sept 1 - Introduction to Aerodynamics - AOE...

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