Morgan and Caster 



C, 



' TT 



Efficiency of ducted propeller system, -^ — 



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4. Kuchemann, D., and Weber, J., "Aerodynamics of Propulsion," McGraw- 

 Hill, New York, 1953. 



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6. Morgan, W.B., and Wrench, J.W., Jr., "Some Computational Aspects of 

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7. Dickmann, H.E., "Grundlagen zur Theorie Ringformigen Tragflugel (frei 

 umstrSmte Diisen)," Ingenieur-Archiv, Vol. H, 1940, pp. 36-52. 



8. Weissinger, J., "Einige Ergebnisse aus der Theorie des Ringflugels in In- 

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 gamon Press, New York, 1959, pp. 798-831. 



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