Post on 23-Mar-2020
transcript
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Fundamental Thoughts
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o ‘A Flowing Gas’
Fundamental Thoughts
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o Four Aerodynamic Quantities
Fundamental Thoughts
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o Pressure
Fundamental Thoughts
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o Density
Fundamental Thoughts
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o Temperature
Fundamental Thoughts
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o Flow Velocity
Fundamental Thoughts
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o Flow Field
Fundamental Thoughts
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o Aerodynamic Forces
Fundamental Thoughts
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o Aerodynamic Forces
Fundamental Thoughts
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o Perfect Gas
Fundamental Thoughts
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o Equation of State for Perfect Gas
Fundamental Thoughts
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o Problem
Fundamental Thoughts
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o Straight, horizontal, steady flight
Fundamental Thoughts
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o Forces
Lift: mainly generated by the wing (small contributions of e.g. tail surfaces)
Weight is composed of three main components: aircraft empty weight, fuel, payload (passengers + luggage,
freight)
Drag is caused by fuselage, wings, tail surfaces, etc.
Thrust is provided by the engines
Question: One of the main rules in aerospace design is to create LIGHTWEIGHT aircraft. WHY??
Fundamental Thoughts
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o Forces
Question: One of the main rules in aerospace design is to create LIGHTWEIGHT aircraft. WHY??
How aircrafts fly?
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o Lift
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o Why do we study an airfoil?
Airfoil is the term used to describe the characteristic shape of the cross-section of an aircraft wing, and whose
purpose is to generate lift
How aircrafts fly?
How aircrafts fly?
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o Lift - Parameters
How aircrafts fly?
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o Lift – Parameters
How aircrafts fly?
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o History of wing profiles