Effect Of Some Present Day Airplane Design Trends On Requirements For Lateral Stability
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Effect Of Some Present Day Airplane Design Trends On Requirements For Lateral Stability
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Author : Millard J. Bamber
language : en
Publisher:
Release Date : 1941
Effect Of Some Present Day Airplane Design Trends On Requirements For Lateral Stability written by Millard J. Bamber and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1941 with Airplanes categories.
The results of the computations are presented in the form of diagrams of variations of fin area with dihedral angle from neutral stability. The results indicate that ncreasing the values of wing loading and moments of inertia makes the attainment of lateral stability increasingly difficult and even doubtful in some cases for airplanes with flaps deflected. The fin area required for lateral stability is more dependent on fuselage size than on wing area.
The Theoretical Lateral Motions Of An Automatically Controlled Airplane Subjected To A Yawing Moment Disturbance
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Author : Frederick H. Imlay
language : en
Publisher:
Release Date : 1941
The Theoretical Lateral Motions Of An Automatically Controlled Airplane Subjected To A Yawing Moment Disturbance written by Frederick H. Imlay and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1941 with Airplanes categories.
The lateral motion resulting from a disturbance of the type produced by asymmetric loss of thrust has been determined for a hypothetical average airplane equipped with an automatic pilot. Plots of the resultant motion and the various modes that constitute the motion are presented for controls fixed and for various amounts of automatic control. The automatic control is assumed to be of a type that produces aileron deflections proportional to the angle of bank and rudder deflections proportional to the angle of azimuth. The use of an automatic control may introduce either of two modes. The first mode is primarily a rolling oscillation; the second is a poorly damped long-period oscillation in azimuth and bank . The motion following any change in trim causes the airplane to reach a state of equilibrium on a different flight heading from that existing before the disturbance and the airplane assumes a new flight attitude.
Experimental Determination Of The Effect Of Negative Dihedral On Lateral Stability And Control Characteristics At High Lift Coefficients
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Author : Marion O. McKinney
language : en
Publisher:
Release Date : 1946
Experimental Determination Of The Effect Of Negative Dihedral On Lateral Stability And Control Characteristics At High Lift Coefficients written by Marion O. McKinney and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1946 with Aerodynamics categories.
Summary: The effects of negative dihedral on lateral stability and control characteristics at high lift coefficients have been determined by flight tests of a model in the Langley free-flight tunnel. The geometric dihedral angle of the model wing was varied from 0° to -20° and the vertical-tail area, from 0 to 35 percent of the wing area. The model was flown with various combinations of dihedral angle and vertical-tail area at lift coefficients of 1.0, 1.4, and 1.8. As the effective dihedral was decreased from 0° to -15°, the model became increasingly difficult to fly. With an effective dihedral of -15° the flying characteristics were considered to be dangerous because, when there was only a slight lag in the application of corrective control following a disturbance, the unstable moments resulting from spiral instability became sufficiently large to overpower the moments of the controls so that return to straight flight was impossible. Inasmuch as full-scale airplanes because of their greater size will diverge at a slower rate than free-flight models, the amount of negative effective dihedral that would constitute a dangerous condition is expected to be greater for full-scale airplanes.
Technical Note National Advisory Committee For Aeronautics
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Author : United States. National Advisory Committee for Aeronautics
language : en
Publisher:
Release Date : 1955
Technical Note National Advisory Committee For Aeronautics written by United States. National Advisory Committee for Aeronautics and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1955 with Aeronautics categories.
Index Of Naca Technical Publications
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Author : United States. National Advisory Committee for Aeronautics
language : en
Publisher:
Release Date : 1955
Index Of Naca Technical Publications written by United States. National Advisory Committee for Aeronautics and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1955 with Aeronautics categories.
A Selected Listing Of Nasa Scientific And Technical Reports For
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Author :
language : en
Publisher:
Release Date : 1949
A Selected Listing Of Nasa Scientific And Technical Reports For written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1949 with Aeronautics categories.
Report
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Author : United States. National Advisory Committee for Aeronautics
language : en
Publisher:
Release Date : 1952
Report written by United States. National Advisory Committee for Aeronautics and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1952 with Aeronautics categories.
Report
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Author :
language : en
Publisher:
Release Date : 1954
Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1954 with Aeronautics categories.
Annual Report Of The National Advisory Committee For Aeronautics
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Author : United States. National Advisory Committee for Aeronautics
language : en
Publisher:
Release Date : 1954
Annual Report Of The National Advisory Committee For Aeronautics written by United States. National Advisory Committee for Aeronautics and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1954 with Aeronautics categories.
Includes the Committee's Technical reports no. 1-1058, reprinted in v. 1-37.
Effect Of Exhaust Pressure On The Performance Of A 12 Cylinder Liquid Cooled Engine
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Author : Leland G. Desmon
language : en
Publisher:
Release Date : 1947
Effect Of Exhaust Pressure On The Performance Of A 12 Cylinder Liquid Cooled Engine written by Leland G. Desmon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1947 with Internal combustion engines categories.
A dynamometer-stand investigation was conducted to determine the effect of exhaust pressure on the performance of a 12-cylinder liquid-cooled aircraft engine equipped with a conventional exhaust collector. The investigation covered a range of exhaust pressures from about 7 to approximately 62 inches of mercury absolute, engine speeds from 1600 to 3000 rpm, inlet-manifold pressures from 30 to 50 inches of mercury absolute and fuel-air ratios of 0.063, 0.069, 0.085, and 0.100.