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BIOL 325 : 22-flight mechanics-student.pdf

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UBC
Department
Biology
Course
BIOL 325
Professor
All

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Document Summary

Identify and explain the significance of the major types of wing shape. Define a leading edge vortex and discuss its significance to lift and maneuverability in jets and birds. Discuss the approach and take-off procedures for birds, and relate this to body mass and wing type. Slide 3: wing shape, swifts and unsteady aerodynamics, take-off and landing procedures. Gliding: high aspect ratio, reduces lift at wingtip (pressure gradient, thus, reduces induced drag, maximize lift, minimize drag, good for flying at max cl:cd velocity (max. range) Soaring: slotted wingtips help to reduce induced drag to mitigate lower aspect ratio. Induced drag vortices push up on next winglet. Shorter wings helps to minimize force at the base. Terrestrial soaring birds avoid flying over water because of lack of thermals: certain regions of tropics have trade. Winds that blow east to west: creates convection under cumulus clouds to create thermal updrafts over water. Updrafts are slow, but frigate birds have very low wing-loading.

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