02-05-2013, 02:51 PM
Aerodynamics Lecture
Aerodynamics Lecture.pdf (Size: 3.14 MB / Downloads: 193)
What is Aerodynamics?
q “A branch of dynamics that deals with the
motion of air and other gaseous fluids, and
with the forces acting on bodies in motion
relative to such fluids” – Webster’s
Dictionary
Lift and Balloons
Buoyancy is easiest way of generating lift
Archimedes principle
• Difference in pressure on surface of a body =
volume displaced
• Weight of fluid displaced = buoyant force
Net force
• Fnet = rgV
Static equilibrium
• mpayload = (r – rint)V
What is drag?
q Aerodynamic force that opposes an
aircraft’s motion through the air, caused by
interaction and contact of a solid body with
a fluid
Aerodynamic friction
Aerodynamic resistance to motion
Depends on wing shape, angle of attack,
effects of air viscosity and compressibility
Class exercise
You and your partner are Senior Aerodynamics
Consultants at BlueSky Enterprises. Your
clients have challenged you to apply your
extensive aerodynamics expertise to design an
innovation for an existing product or service of
your choosing.
They want your answer in 10 minutes.
Prepare a 1-minute pitch on your product
innovation to present to the clients.
Caveat: You can’t pick any of the aerodynamics
application areas we discussed earlier! Be
creative.