Multiengine airplane spin characteristics as indicated by model tests in the free-spinning wind tunnel

Author:	Seidman, Oscar
Year:	1942
Document Type:	N/A
Series:	NACA Wartime Reports
Report Number:	NACA-WR-L-721, NACA-ARR
Link:	https://digital.library.unt.edu/ark:/67531/metadc62666/