1.

Technical Paper
Technical Paper
1. Investigation of Advanced Counterrotation Blade Configuration Concepts for High Speed Turboprop Systems
Crook, Andrew J. ; Delaney, Robert A.
Pub. info.: NASA Technical Reports.  pp.1-111,  1991.  National Aeronautics and Space Adminstration
2.

Technical Paper
Technical Paper
2. Investigation of Advances Counterrotation Blade Configuration Concepts for High Speed Turboprop Systems : Task IV - Advanced Fan Sction Aerodynamic Analysis Final Report
Crook, Andrew J. ; Delaney, Robert A.
Pub. info.: NASA Technical Reports.  (NASA-CR-187128),  pp.1-74,  1992.  National Aeronautics and Space Adminstration