1949 SHELL OIL CO. EDUCATIONAL FILM “ HOW AN AIRPLANE FLIES PART 2: DRAG ” 42644
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This 1949 Shell Oil produced educational film is one of a series of six that presents basic information about “How An Airplane Flies“. This one is about drag, or the resistance of air on the forward movement of aircrafts. It depicts the parasite drag as well as skin friction and how to combat or minimize the effects of the drag. It opens with an airplane taking off from a runway and provides the information that as it takes off, the air moving under the wing creates lift which enables it to fly (:35). Drag is when air resists the movement of any flying object (:47), in this case a Curtiss-Wright AT-9 Jeep airplane. A demonstration of drag includes a happy, romantic couple walking together freely when sheltered by the wind (1:10) and how when winds are high it is more difficult to move forward aga
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