Instrument-flight results obtained with a combined-signal flight indicator modified for helicopter use

Author:	Crim, Almer D
Additional Authors:	Reeder, John P
Year:	1952
Document Type:	N/A
Series:	NACA Technical Notes
Report Number:	NACA-TN-2761
Link:	https://digital.library.unt.edu/ark:/67531/metadc56453/