Military aeroplanes; an explanatory consideration of their characteristics, performances, construction, maintenance, and operation, for the use of aviators (1918) (14780404262)

Identifier: militaryaeroplan00loenrich (find matches)
Title: Military aeroplanes; an explanatory consideration of their characteristics, performances, construction, maintenance, and operation, for the use of aviators
Year: 1918 (1910s)
Authors: Loening, Grover Cleveland, 1888-
Subjects: Airplanes Aeronautics, Military
Publisher: (Boston : W. S. Best Printing Company
Contributing Library: University of California Libraries
Digitizing Sponsor: MSN



Text Appearing Before Image:
be stated then, that P = K S V=This is the fundamental formula of Aerodynamics. The units used will be S in square feet, V in miles per hour andP in pounds. Although P also depends on the density of the air, sea level and60° F., conditions are considered here and included in the value of K. In this chapter we are interested in the air resistance of variousobjects and parts made use of in flying machines -— and in addingto the air resistance of these parts the air force on the wings, that mustbe overcome to obtain the lift, we obtain the value of the total resist-ance to motion that is overcome by the propeller thrust. In view of the above formula, it becomes necessary, merely, toreview and average up the laboratory results, so as to obtain valuesof K for the various different objects. The most accurate determinations of the latest experiments aremade use of for this purpose and it is again emphasized that the valuesof K given, include both the impact and frictional resistances. 48
Text Appearing After Image:
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