Flight Investigation of Effects of Rotor-Blade Twist on Helicopter Performance in the High-Speed and Vertical-Autorotative-Descent Conditions

Author:	Gessow, Alfred
Year:	1948
Document Type:	N/A
Series:	NACA Technical Notes
Report Number:	NACA-TN-1666
Link:	https://digital.library.unt.edu/ark:/67531/metadc54698/