Handicraft for handy boys; : practical plans for work and play with many ideas for earning money, (1911)
Hall, A. Neely (Albert Neely), b. 1883, Hall, Norman P., ill · Boston, : Lothrop, Lee & Shepard · leaf 355
more elaborate monoplanes. A number of suc-cessful biplane models have been made, but so far nonehas been produced which can equal the records of themonoplane model. They are usually not as stable amachine, the greatest difficulty being that a very slightdisturbance in the air will upset them and… … 33 O A< .-JA a o MODEL AEROPLANES 303 in designing an aeroplane, in order to make it so it willride the air successfully. It is necessary to so plan thewings, ox planes, that the center of the upward pressureexerted upon them by the supporting air beneath willcome at the ce^iter of balance. The…
Woodwork · Toys · Amusements
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