12 Oct 13 - Aircraft Mechanics and Thrust Required for SSSL

# 12 Oct 13 - Aircraft Mechanics and Thrust Required for SSSL...

This preview shows pages 1–13. Sign up to view the full content.

Click to edit Master subtitle style AOE 2104--Aerospace and Ocean Engineering Fall 2009 Virginia Tech 13 October2009 Lecture 7 AOE 2104 Introduction to Aerospace Engineering Lecture 7 Aircraft Flight Mechanics Thrust Required for SSSL Flight

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
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 2009 13 October2009 Lecture 7
Click to edit Master subtitle style Virginia Tech AOE 2104--Aerospace and Ocean Engineering Fall 2009 13 October2009 Lecture 7

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Click to edit Master subtitle style Virginia Tech Thrust Drag Lift Weight AOE 2104--Aerospace and Ocean Engineering Fall 2009 13 October2009 Lecture 7
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., CL2/(° eAR). 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 2009 13 October2009 Lecture 7

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Click to edit Master subtitle style Virginia Tech α Ανγ λε οφ Ατ τ αχκ (ΑΟΑ 29 αΤ Τηρυστ ΑΟΑ θ Ανγ λε οφ Φλιγ ητ (ϖ .ρ.τ . λοχαλ ηοριζοντ αλ29 AOE 2104--Aerospace and Ocean Engineering Fall 2009 13 October2009 Lecture 7
Click to edit Master subtitle style Virginia Tech AOE 2104--Aerospace and Ocean Engineering Fall 2009 13 October2009 Lecture 7

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Click to edit Master subtitle style Virginia Tech AOE 2104--Aerospace and Ocean Engineering Fall 2009 13 October2009 Lecture 7
Click to edit Master subtitle style Virginia Tech AOE 2104--Aerospace and Ocean Engineering Fall 2009 13 October2009 Lecture 7

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
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 π ρ 2 0 , 2 2 1 AR e C S V SC V D L D π ρ ρ 2 2 0 , 2 2 1 2 1 + = L SC V W L 2 2 1 ρ = = D SC V T D 2 2 1 ρ = = AOE 2104--Aerospace and Ocean Engineering Fall 2009 13 October2009 Lecture 7
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 = minimum thrust required to balance drag ° obtained at (L/D)max . AOE 2104--Aerospace and Ocean Engineering Fall 2009 13 October2009 Lecture 7

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Click to edit Master subtitle style Virginia Tech Aircraft Performance – Examples of Lift-to-Drag Ratio Lift-to-drag ratio? 17 Do I really need to ask?
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern