Wind-tunnel investigation of effects of spoiler location, spoiler size, and fuselage nose shape on directional characteristics of a model of a tandem-rotor helicopter fuselage

Author:	Williams, James L.
Year:	1958
Document Type:	N/A
Series:	NACA Technical Notes
Report Number:	NACA-TN-4305
Link:	https://digital.library.unt.edu/ark:/67531/metadc56961/