Investigation Of The Aerodynamic Characteristics Of A Model Wing Propeller Combination And Of The Wing And Propeller Separately At Angles Of Attack U P To 90 PDF Download

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Investigation of the Aerodynamic Characteristics of a Model Wing-propeller Combination and of the Wing and Propeller Separately at Angles of Attack Up to 90°

Investigation of the Aerodynamic Characteristics of a Model Wing-propeller Combination and of the Wing and Propeller Separately at Angles of Attack Up to 90°
Author: John W. Draper
Publisher:
Total Pages: 82
Release: 1954
Genre: Aerodynamics
ISBN:

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This report presents the results of an investigation conducted in the Langley 300 mph 7- 10-foot wind tunnel for the purpose of determining the aerodynamic characteristics of a model wing-propeller combination, and of the wing and propeller separately at angles of attack up to 90 degrees. The tests covered thrust coefficients corresponding to free-stream velocities from zero forward speed to the normal range of cruising speeds. The results indicate that increasing the thrust coefficient increases the angle of attack for maximum lift and greatly diminishes the usual reduction in lift above the angle of attack for maximum lift.


Charts for Estimating Rotor-blade Flapping Motion of High-performance Helicopters

Charts for Estimating Rotor-blade Flapping Motion of High-performance Helicopters
Author: Robert J. Tapscott
Publisher:
Total Pages: 692
Release: 1956
Genre: Charts, diagrams, etc
ISBN:

Download Charts for Estimating Rotor-blade Flapping Motion of High-performance Helicopters Book in PDF, ePub and Kindle

Theoretically derived charts showing steady-state and first- and second-harmonic flapping coefficients are presented for helicopter rotors having hinged rectangular blades with a linear twist of 0, -8, and -16 degrees. The charts, showing the rotor flapping coefficients for combinations of inflow ratio and blade pitch angle, are presented for tip-speed ratios ranging from 0.05 to 0.50.


Technical Note

Technical Note
Author:
Publisher:
Total Pages: 460
Release: 1955
Genre: Aeronautics
ISBN:

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Index of NACA Technical Publications

Index of NACA Technical Publications
Author: United States. National Advisory Committee for Aeronautics
Publisher:
Total Pages: 306
Release: 1956
Genre: Aeronautics
ISBN:

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