Hovering flight tests of a four-engine-transport vertical take-off airplane model utilizing a large flap and extensible vanes for redirecting the propeller slipstream

Author:	Tosti, Louis P.
Year:	1955
Document Type:	N/A
Series:	NACA Technical Notes
Report Number:	NACA-TN-3440
Link:	https://digital.library.unt.edu/ark:/67531/metadc57857/