Experimental Verification of the Rudder-free Stability Theory for an Airplane Model Equipped with Rudders Having Negative Floating Tendency and Negligible Friction

Experimental Verification of the Rudder-free Stability Theory for an Airplane Model Equipped with Rudders Having Negative Floating Tendency and Negligible Friction PDF Author: Marion O. McKinney
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ISBN:
Category : Aerodynamics
Languages : en
Pages : 70

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When this assumption is made that the rolling motions alone or the lateral and rolling motions may be neglected in the calculations of rudder-free stability, it is possible to predict satisfactorily the characteristics of the long-period (Dutch roll type) rudder-free oscillation for airplanes only when the effective-dihedral angle is small. With these simplifying assumptions, however, satisfactory prediction of the short-period oscillation may be obtained for any dihedral. Further simplification of the theory based on the assumption that the rudder moment of inertia might be disregarded was found to be invalid because this assumption made it impossible to calculate the characteristics of the short-period oscillations.

Experimental Verification of the Rudder-free Stability Theory for an Airplane Model Equipped with Rudders Having Negative Floating Tendency and Negligible Friction

Experimental Verification of the Rudder-free Stability Theory for an Airplane Model Equipped with Rudders Having Negative Floating Tendency and Negligible Friction PDF Author: Marion O. McKinney
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 70

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Book Description
When this assumption is made that the rolling motions alone or the lateral and rolling motions may be neglected in the calculations of rudder-free stability, it is possible to predict satisfactorily the characteristics of the long-period (Dutch roll type) rudder-free oscillation for airplanes only when the effective-dihedral angle is small. With these simplifying assumptions, however, satisfactory prediction of the short-period oscillation may be obtained for any dihedral. Further simplification of the theory based on the assumption that the rudder moment of inertia might be disregarded was found to be invalid because this assumption made it impossible to calculate the characteristics of the short-period oscillations.

Wartime Report

Wartime Report PDF Author: United States. National Advisory Committee for Aeronautics
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ISBN:
Category : Aeronautics
Languages : en
Pages : 298

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Wartime Report

Wartime Report PDF Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 762

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Reproductions of reports, some declassified, of research done at Langley Memorial Aeronautical Laboratory during World War II. The order of reports does not represent when they were chronologically issued. Reference to the original version of each report is included.

NACA Wartime Report

NACA Wartime Report PDF Author: United States. National Advisory Committee for Aeronautics
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ISBN:
Category : Aeronautics
Languages : en
Pages : 692

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Index of NACA Reports Having Application to Personal Aircraft

Index of NACA Reports Having Application to Personal Aircraft PDF Author: United States. National Advisory Committee for Aeronautics
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ISBN:
Category : Aeronautics
Languages : en
Pages : 32

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Index of NACA Technical Publications

Index of NACA Technical Publications PDF Author: United States. National Advisory Committee for Aeronautics
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ISBN:
Category : Aeronautics
Languages : en
Pages : 1370

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Experimental Determination of the Effect of Horizontal-tail Size, Tail Length, and Vertical Location on Low-speed Static Longitudinal Stability and Damping in Pitch of a Model Having 45 ̊sweptback Wing and Tail Surfaces

Experimental Determination of the Effect of Horizontal-tail Size, Tail Length, and Vertical Location on Low-speed Static Longitudinal Stability and Damping in Pitch of a Model Having 45 ̊sweptback Wing and Tail Surfaces PDF Author: Arthur Earl Bryson
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ISBN:
Category : Aeronautics
Languages : en
Pages : 340

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A Selected Listing of NASA Scientific and Technical Reports for ...

A Selected Listing of NASA Scientific and Technical Reports for ... PDF Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 664

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Technical Note - National Advisory Committee for Aeronautics

Technical Note - National Advisory Committee for Aeronautics PDF Author: United States. National Advisory Committee for Aeronautics
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ISBN:
Category : Aeronautics
Languages : en
Pages : 1172

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Propeller-loudness Charts for Light Airplanes

Propeller-loudness Charts for Light Airplanes PDF Author: Harvey H. Hubbard
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ISBN:
Category : Charts, diagrams, etc
Languages : en
Pages : 592

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Book Description
Calculations of the rotational-noise and vortex noise loudness levels at distances of 300 and 1000 feet have been made for a large number of propellers in forward flight of 50 to 200 miles per hour and for engine ratings of 100 to 300 horsepower. Propellers of two, four, six, and eight blades, diameters of 6, 8, and 10 feet, and rotational speeds of 1000 to 2000 rpm are considered. Calculated results are presented in chart form for convenience of designers of propellers for applications in which loudness is an important consideration.