Principles of Flight 5-9 DEC 2016.

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Presentation transcript:

Principles of Flight 5-9 DEC 2016

Do Now 7 DEC 16 Take out notebook Pick up blank worksheet Pick up blank paper - fold a new cylindrical airfoil

Mini-Lesson 1: Four Forces of Flight (HTA)

Mini-Lesson 1: Four Forces of Flight (HTA) Vocabulary Force – a push or pull on an object Lift – the upward force created by a difference in air pressure Thrust – The forward force created by a propeller, a jet, or other kinetic action Drag – the resistance (pull) caused by the shape of the object moving through air Weight – the pull of gravity on the mass of the object towards the center of the earth

Flight Test 1.0 Cylindrical airfoil (CAF) On your blue engineering worksheet, describe the where (or how) the Four Forces of Flight apply: Where does the thrust come from? How is lift generated? How do drag & gravity apply? Choose ONE force - What can you do to affect (change) how it applies (influences) the CAF flight. Discuss with your group Flight Test 1.0

Clean-up All models and flight test materials put away Floor and desktops free of debris Chairs pushed-in

Principles of Flight 5-9 DEC 2016

Do Now 8 DEC 16 Take out notebook Open to Flight Test 1.0 (FT 1.0) Take out current cylindrical airfoil (CAF) Pick up piece of scrap paper for demonstration

Mini-Lesson 2: Generating Lift – Bernoulli Principle As the speed of a fluid (like air) goes up, it’s pressure goes down. The pressure in a fast moving stream of fluid (like air) is less than the pressure in a slower stream. THEREFORE, if air moves FASTER over one side of a wing (airfoil) and SLOWER over the other side, the pressure of the air on the slower side will LIFT the wing. This is what your CAF is doing: It’s shape increases the velocity of the air passing through it. Q: Why does it glide on a level path?

Flight Test 1.1 Cylindrical airfoil (CAF) From yesterday: Describe the where (or how) the Four Forces of Flight apply Choose ONE force, consider how it applies to the CAF flight Discuss with your group - record results TODAY: Check your work – Have you DRAFTED first five sections? What are your Criteria for Success? Choose ONE measurable way to document improved flight performance. Flight Test 1.1 Day Two

Clean-up All models and flight test materials put away Floor and desktops free of debris Chairs pushed-in