The National Geographic Magazine, Volume 78National Geographic Society, 1940 - Geography Indexes kept up to date with supplements. |
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Page 167
... engine . With whines and growls of protest from gear train and motors , the entire engine was lifted high in the air , carried over the tops of half a dozen others , and set gently onto the wheels . Controlling these op- erations was a ...
... engine . With whines and growls of protest from gear train and motors , the entire engine was lifted high in the air , carried over the tops of half a dozen others , and set gently onto the wheels . Controlling these op- erations was a ...
Page 719
... engine is behind the pilot , and geared to the propeller by a drive shaft extending forward . This plane has a speed of approximately 400 miles per hour . Photograph courtesy Dr. Orville Wright When Airplane Flying Was Born - the ...
... engine is behind the pilot , and geared to the propeller by a drive shaft extending forward . This plane has a speed of approximately 400 miles per hour . Photograph courtesy Dr. Orville Wright When Airplane Flying Was Born - the ...
Page 726
... engine - driven rotor blades whirling above . The helicopter will fly forward , backward , or sideways when tilted in the desired direction by auxiliary rotors . Another plane that rises vertically , the autogiro , gets its lift from ...
... engine - driven rotor blades whirling above . The helicopter will fly forward , backward , or sideways when tilted in the desired direction by auxiliary rotors . Another plane that rises vertically , the autogiro , gets its lift from ...
Contents
Aviation in Commerce and Defense By F BARROWS COLTON 685 | 83 |
ill 62 | 133 |
A Canadian Canoe Threads Old English Waterways | 185 |
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