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The Alpine Swift
Transcript of The Alpine Swift
An Airplane and the Alpine Swift
Thanks for Watching!
Thanks to Bernoulli as well for inventing your Principle! :)
Lift, Thrust, Drag, and Gravity
-lift would get the bird up in the air
-gravity pulls it down
-gravity would still pull the bird down, but the wings would counter gravity -pointed wing shapes gives enough lift without producing too much drag
-method of propulsion (the wings) would produce thrust
-Earth’s gravitational force (gravity) and the wind (drag) trouble the Alpine Swift during flight.
About the Alpine Swift
The Alpine Swift is a bird that belongs in the Apodidae family. Recent studies show that it could stay aloft for more than six months! But how is this possible?
The Alpine Swift's Talent
-rations its energy and doesn't use it all up in one day
-has slender, curved wings
-has long, narrow wings
-has pointed wings
-gets it diet from air plankton and catches their prey during flight. -also possible that the Swift gets its hours of sleep while gliding in the air.
The Alpine Swift
The Flight of the Swift
-The Alpine Swift alternates fast wing beats with short glides to preserve it's energy for the long distance flight.
-The wide, flat wing and tail feathers push and cut through the air to help the Swift fly.
-Since the Alpine Swift has hollow bones, it is very light weight so it can lift up into the air easier.
-Their large wingspan enables swifts to glide
instead of landing to rest.
-Schaefer, Lola. What is a Bird? Mankato, Minnesota: Pebble Books, 2001.
-Challoner, Jack. Flight Princeton, New Jersey: Two-can, 2001
-Burnie, Avid. Bird New York, NY: Dorling Kindersley, 2000
-Berger, Melvin and Berger, Gilda. Birds New York, NY: Scholastic Inc., 2010
-Britannica Illustrated Science Library Birds Encyclopaedia Britannica, Inc., 2009
-Mintz, Zoe. ‘Alpine Swift Fly Nonstop For 200 Days, Migrating Birds ‘Did Not Rest’ ON Trees or Cliffs’ International Business Times. October 9th 2013
-‘Bird Bones May be Hollow but they are also Heavy.’ Science Daily March 23rd, 2010 http://www.sciencedaily.com/releases/2010/03/100322112103.htm
-Engineers and Technicians of NASA. ‘Atmospheric Flight the Work of Wings’ NASA http://quest.nasa.gov/aero/planetary/atmospheric/aerodynamiclift.html
Google Search (search engine)
-The Alpine Swift compares to airplanes because they both use the same aerodynamics to be able to fly.
-The wing shapes-called airfoils- of the Swift and an airplane have a curve at the top.
-The airfoil shape creates lift when air flows around it. This will help lift the Swift up when flying just like an airplane.
The difference in air pressure creates lift.
Alpine Swifts and Other Swifts
You can separate Alpine Swifts from other swifts by it's white throat and chest. They are twice the size of other species of swifts. Other swifts are capable of flying long distances, but haven't been proved to fly as long as the Alpine Swift.