Page:Aerial Flight - Volume 2 - Aerodonetics - Frederick Lanchester - 1908.djvu/391

 And by Equation 16, 28,

or

Curve No. 5. (Inflected type.)

Vide § 28.

Curve No. 6.

Lowest point on curve,

whence

Point of inflection

and

or

Curve No. 7. Special case. Semicircle.

Curve No. 8. (Tumbler.)

Lowest point on curve,

whence