Flight Investigation at Subsonic, Transonic, and Supersonic Velocities of the Hinge-moment Characteristics, Lateral-control Effectiveness, and Wing Damping in Roll of a 60 Degrees Sweptback Delta Wing with Half-delta Tip Ailerons PDF Download
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Author: C. William Martz
Publisher:
ISBN:
Category :
Languages : en
Pages : 32
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Book Description
Author: C. William Martz
Publisher:
ISBN:
Category :
Languages : en
Pages : 32
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Book Description
Author: Harold L. Crane
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 58
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Book Description
A flight investigation at subsonic speeds of a method to improve the damping of lateral oscillations by means of a viscous damping cylinder used in the rudder system in conjunction with adjusted hinge-moment parameters has been conducted. The damping device has been applied to a modern fighter-type jet-powered airplane. The rudder was made to float with the relative wind by the addition of trailing-edge strips. In order to amplify the floating tendency (by reducing the restoring moment), a highly geared balancing tab was incorporated. Lag of the motion of the free rudder with respect to the yawing of the airplane was introduced by means of a small viscous damping cylinder linked to the rudder.
Author: Charles T. D'Aiutolo
Publisher:
ISBN:
Category : Stability of airplanes, Longitudinal
Languages : en
Pages : 36
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Book Description
Author: Carl A. Sandahl
Publisher:
ISBN:
Category :
Languages : en
Pages : 13
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Book Description
Author: Edward C. Polhamus
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 90
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Book Description
A summary and analysis has been made of results obtained in a systematic research program concerned with the effects of wing sweep, aspect ratio, taper ratio, and dihedral on the rolling moment due to sideslip characteristics of wing-fuselage configurations up to Mach numbers of about 0.95. Other test results are presented to show trends of rolling moment due to sideslip with Mach number for a few wings in the transonic and supersonic speed range.
Author: William N. Gardner
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
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Book Description
Author: Robert C. Nelson
Publisher: WCB/McGraw-Hill
ISBN: 9780071158381
Category : Aerodynamique / Aeronautique / Aerospatial / Automatique / Avion / Commande / Conception / Controle / Navigation / Stabilite
Languages : en
Pages : 441
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Book Description
The second edition of Flight Stability and Automatic Control presents an organized introduction to the useful and relevant topics necessary for a flight stability and controls course. Not only is this text presented at the appropriate mathematical level, it also features standard terminology and nomenclature, along with expanded coverage of classical control theory, autopilot designs, and modern control theory. Through the use of extensive examples, problems, and historical notes, author Robert Nelson develops a concise and vital text for aircraft flight stability and control or flight dynamics courses.
Author: Herbert S. Ribner
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 50
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Book Description
The damping in roll of cruciform delta wings in supersonic flow has been evaluated by means of small-disturbance (linearized) wing theory; both subsonic and supersonic component stream velocities normal to the leading edges have been considered. In addition, some known two-dimensional results for rotating multibladed laminae have been applied to obtain the loading when the number of panels is changed from four to an arbitrary number, under the restriction of low aspect ratio; the damping in roll has been determined explicitly for three panels. Finally, the damping for an inifinite number of panels has been evaluated without restriction as to aspect ratio or Mach number.
Author: Alexander D. Hammond
Publisher:
ISBN:
Category :
Languages : en
Pages : 80
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Book Description
Author: John A. Moore
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 28
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Book Description
The damping-in-pitch derivative was determined experimentally at Mach numbers of 2.96 and 3.92 for two delta wings having aspect ratios of 2 and 3 and for one sweptback tapered wing having an aspect ratio of 3 by using a free-oscillation technique. The tests were made at Reynolds numbers based on mean aerodynamic chord from 4,000,000 to 12,000,000 for an angle-of-attack range of zero to 10 degrees. The reduced-frequency parameter ranged from 0.006 to 0.022.
