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Lecture 6-Aircraft Mechanics and Thrust Required for SSL

# Lecture 6-Aircraft Mechanics and Thrust Required for SSL -...

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Click to edit Master subtitle style AOE 2104--Aerospace and Ocean Engineering Fall 2010 Virginia Tech 28 September 2010 Lecture 6 AOE 2104 Introduction to Aerospace Engineering Lecture 6 Aircraft Flight Mechanics Thrust Required for SSSL Flight

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Click to edit Master subtitle style Virginia Tech How fast can it fly? How slowly can it fly? How rapidly can it climb? How high can it fly? How far can it go on a tank of fuel? How long can it stay in the air on a tank of fuel? How far can it glide when the engines quit? How tight a circle can it turn? How much runway is needed for takeoff? How much runway is needed for landing? What Does Aircraft Performance Consist of ???? AOE 2104--Aerospace and Ocean Engineering Fall 2008 Fall 2010 28 September 2010 Lecture 6
Click to edit Master subtitle style Virginia Tech AOE 2104--Aerospace and Ocean Engineering Fall 2010 28 September 2010 Lecture 6

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Click to edit Master subtitle style Virginia Tech Thrust Drag Lift Weight AOE 2104--Aerospace and Ocean Engineering Fall 2010 28 September 2010 Lecture 6
Click to edit Master subtitle style Virginia Tech Aircraft Performance – Drag Review For a wing (low-speed subsonic), CD = Cd + Cd,i Cd is the profile drag coeff., includes skin friction and pressure drag. CD,i is the induced drag coeff., e is the span efficiency factor. For a wing (transonic and supersonic), Cd is the profile drag coefficient that also includes wave drag. AOE 2104--Aerospace and Ocean Engineering Fall 2010 28 September 2010 Lecture 6

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Click to edit Master subtitle style Virginia Tech α Ανγ λε οφ Ατ τ αχκ (ΑΟΑ29 αΤ Τηρυστ ΑΟΑ θ Ανγ λε οφ Φλιγ ητ (ϖ .ρ.τ . λοχαλ ηοριζοντ αλ29 AOE 2104--Aerospace and Ocean Engineering Fall 2010 28 September 2010 Lecture 6
Click to edit Master subtitle style Virginia Tech AOE 2104--Aerospace and Ocean Engineering Fall 2010 28 September 2010 Lecture 6

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Click to edit Master subtitle style Virginia Tech AOE 2104--Aerospace and Ocean Engineering Fall 2010 28 September 2010 Lecture 6
Click to edit Master subtitle style Virginia Tech AOE 2104--Aerospace and Ocean Engineering Fall 2010 28 September 2010 Lecture 6

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Click to edit Master subtitle style Virginia Tech Aircraft Performance – SSSL Flight Drag Remember the Drag Polar Thus, AR e C C C L D D π 2 0 , + = + = AR e C C S V D L D ρ 2 0 , 2 2 1 AR e C S V SC V D L D 2 2 0 , 2 2 1 2 1 + = L SC V W L 2 2 1 = = D SC V T D 2 2 1 = = AOE 2104--Aerospace and Ocean Engineering Fall 2010 28 September 2010 Lecture 6
Click to edit Master subtitle style Virginia Tech Aircraft Performance – SSSL Flight Lift-to-Drag Ratio Lift-to-Drag ratio L/D is a measure of aerodynamic efficiency. Required Thrust

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Lecture 6-Aircraft Mechanics and Thrust Required for SSL -...

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