Law of Similitude for the Surface Resistance of Lacquered Planes Moving in a Straight Line Through Water PDF Download
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Author: Friedrich Gebers Publisher: ISBN: Category : Airplanes Languages : en Pages : 756
Book Description
The proof of the validity of the Reynolds law of similitude for the surface resistance of planes has been developed with an accuracy hitherto unattained and for a large range of lengths and speeds. It has been shown that, in addition to the form resistance, the resistance of the longitudinal edges must be taken into account.
Author: Friedrich Gebers Publisher: ISBN: Category : Airplanes Languages : en Pages : 756
Book Description
The proof of the validity of the Reynolds law of similitude for the surface resistance of planes has been developed with an accuracy hitherto unattained and for a large range of lengths and speeds. It has been shown that, in addition to the form resistance, the resistance of the longitudinal edges must be taken into account.
Author: B. N. Yegorov Publisher: ISBN: Category : Aerofoils Languages : en Pages : 688
Book Description
A fundamental defect of existing methods for the determination of the polar of an airplane in flight is the impossibility of obtaining the thrust or the resistance of the propeller for any type airplane with any type engine. The new method is based on the premise that for zero propeller thrust the mean angle of attack of the blade is approximately the same for all propellers if this angle is reckoned from the aerodynamic chord of the profile section. This angle was determined from flight tests. Knowing the mean angle of the blade setting the angle of attack of the propeller blade at zero thrust can be found and the propeller speed in gliding obtained. The experimental check of the new method carried out on several airplanes gave positive results. The basic assumptions for the construction of the polars and the method of analyzing the flight data are given.
Author: Friedrich Gebers
Author: Friedrich Gebers
Author: United States. National Advisory Committee for Aeronautics
Author: United States. National Advisory Committee for Aeronautics
Author: 
Author: 
Author: United States. Work Projects Administration
Author: United States. National Advisory Committee for Aeronautics
Author: 
Author: B. N. Yegorov
Author: National Research Council (U.S.)