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 104
... AIRPLANE MODELS No one knows who built the first model airplane . Models of birds , carved from wood and able to fly like gliders , have been found in ancient Egyptian tombs . Early inventors such as Leonardo Da Vinci ( 1452-1519 ) ...
... AIRPLANE MODELS No one knows who built the first model airplane . Models of birds , carved from wood and able to fly like gliders , have been found in ancient Egyptian tombs . Early inventors such as Leonardo Da Vinci ( 1452-1519 ) ...
Side 117
... airplane through their bodies , so they said they " flew by the seat of their pants . " But instruments have become more and more important in aviation . Generally , the larger the airplane , the greater the number of instruments . Even ...
... airplane through their bodies , so they said they " flew by the seat of their pants . " But instruments have become more and more important in aviation . Generally , the larger the airplane , the greater the number of instruments . Even ...
Side 120
... airplane deviates ( strays ) from straight and level flight , the gyroscopes detect the change . By means of electrical servo- motors ( much like those used on radio - con- trolled model airplanes ) , they move the con- trols slightly ...
... airplane deviates ( strays ) from straight and level flight , the gyroscopes detect the change . By means of electrical servo- motors ( much like those used on radio - con- trolled model airplanes ) , they move the con- trols slightly ...
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