Definitive test data for rotor flapping at low advance ratio obtained
Monday, January 31, 1972
This is a Significant Technology milestone.
Description:
It had proved very difficuly to predict lateral flapping using the analyses of the time. The data gathered by Harris enabled the development of more sophisticated analytical models that improved the ability to design control systems correctly.
Source: Johnson W., Milestones in Rotorcraft Aeromechanics, NASA/TP-2011-25971, May 2011, Page 27
