Performance and Stresses Obtained on an Isolated VTOL-type Propeller Operating in Hovering, Transitional and Axial Flight PDF Download
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Author: Andrew R. Trenka
Publisher:
ISBN:
Category : Propellers
Languages : en
Pages : 206
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Book Description
Experimental performance and blade stresses measured on a three-bladed VTOL-type propeller tested in free air are presented. The isolated propeller was tested over ranges of prop speed, forward velocity, blade angle setting, and thrust axis to free-stream angle. Correlation with a theoretical method of predicting propeller performance and blade stresses was made. It was found that when the propeller was operating in a flight condition for which the theory was developed, correlation between theory and experiment was good. When the propeller was operating in a flight condition where very small positive or negative effective angles of attack were encountered, correlation between theory and experiment was poor. (Author).
Author: Andrew R. Trenka
Publisher:
ISBN:
Category : Propellers
Languages : en
Pages : 206
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Book Description
Experimental performance and blade stresses measured on a three-bladed VTOL-type propeller tested in free air are presented. The isolated propeller was tested over ranges of prop speed, forward velocity, blade angle setting, and thrust axis to free-stream angle. Correlation with a theoretical method of predicting propeller performance and blade stresses was made. It was found that when the propeller was operating in a flight condition for which the theory was developed, correlation between theory and experiment was good. When the propeller was operating in a flight condition where very small positive or negative effective angles of attack were encountered, correlation between theory and experiment was poor. (Author).
Author: Andrew Richard Trenka
Publisher:
ISBN:
Category : Rotors (Helicopters)
Languages : en
Pages : 134
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Book Description
The report presents a theoretical method which allows the prediction of performance and stress characteristics of a single VTOL-type of propeller-wing-nacelle combination operating in various flight conditions from hovering through transition and into axial flight. The method includes (1) the effects of a distorted wake, i. e., the effects of contraction and radial and axial velocity variations; (2) the effects of hovering close to the ground; (3) the interference effects from a nacelle and wing buried in the propeller slipstream. Also presented are experimental thrust and torque data. However, because of the insufficient accuracy of the experimental data collected, no definite evaluation of the model is made. (Author).
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1012
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 256
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Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1504
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Author: Irving Carl Statler
Publisher:
ISBN:
Category : Short take-off and landing aircraft
Languages : en
Pages : 466
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Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 660
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 672
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 670
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Author:
Publisher:
ISBN:
Category : American literature
Languages : en
Pages : 812
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