The New Book of Knowledge, Volum 1Grolier Incorporated, 1989 - 21 sider An illustrated encyclopedia containing over 9000 articles on history, literature, art and music, geography, myths and legends, mathematics, science, hobbies, holidays and festivals, games, sports, crafts, medicine, law, government, industry, politics, and other topics. |
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Side 111
... Wings Airplane wings are designed to be very strong . Beneath the skin , or surface material , of the wing is a framework consisting of one or more spars , and ribs , stringers , and for- mers . The spars run from the wing root ( the ...
... Wings Airplane wings are designed to be very strong . Beneath the skin , or surface material , of the wing is a framework consisting of one or more spars , and ribs , stringers , and for- mers . The spars run from the wing root ( the ...
Side 112
... wings that extend straight out from the fuse- lage , with a very visible curve on the top sur- face . This provides lift at slow speeds . Faster airplanes have thinner wings . Because the air flows faster over these wings , less curve ...
... wings that extend straight out from the fuse- lage , with a very visible curve on the top sur- face . This provides lift at slow speeds . Faster airplanes have thinner wings . Because the air flows faster over these wings , less curve ...
Side 296
... wings . Larger front wings are used for flying , small back wings ( halteres ) for controlling flight . The wings of bats are different from those of birds . A bat is a hairy mammal . Its wing is a sheet of skin stretched out between ...
... wings . Larger front wings are used for flying , small back wings ( halteres ) for controlling flight . The wings of bats are different from those of birds . A bat is a hairy mammal . Its wing is a sheet of skin stretched out between ...
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