'Aerodynamics of the Helicopter' is published

Description

One of the early and most notable text books on rotary wing Aeromechanics (by Alfred Gessow and Garry Myers) is first published. The reference is provided below,

Gessow, A., and Myers, G. C., Jr.: Aerodynamics of the Helicopter. New York: The Macmillan Company, 1952.

Source: Johnson W., Milestones in Rotorcraft Aeromechanics, NASA/TP-2011-25971, May 2011, Page 13

 (Note: Only the year is exact for the milestone date)