Page:Aerial Flight - Volume 1 - Aerodynamics - Frederick Lanchester - 1906.djvu/281

Rh a position to obtain numerical values for the best values of the angle $$\beta$$ for aerofoils of different aspect value. Table IV. illustrates the process of calculation in the case of the pterygoid aerofoil $$\xi$$ being taken as = .03.

Table V. gives the results for values of $$\xi$$ equal .025, .020, .015 and .010 in the respective