Effect of Horizontal-Tail Chord on the Calculated Subsonic Span Loads and Stability Derivatives of Isolated Unswept Tail Assemblies in Sideslip and Steady RollReportar como inadecuado




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Subsonic span loads and the resulting stability derivatives have been calculated using the discrete-horseshoe-vortex method for a systematic series of horizontal tails in combination with a vertical tail of aspect ratio 1.0 in order to provide information on the effect of varying the chord of the horizontal tail for isolated tail assemblies perform

Autor: Booth, Katherine W

Fuente: https://archive.org/


Introducción



NASA MEMO ao i ! NASA MEMORANDUM EFFECT OF SUBSONIC OF HORIZONTAL-TAIL SPAN LOADS ISOLATED CHORD AND UNSWEPT SIDESLIP By W. Research Langley Field, THE CALCULATED DERIVATIVES ASSEMBLIES STEADY Katherine Langley STABILITY TAIL AND ON IN ROLL Booth Center Va. NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHI March NGTON 1959 4-1-59L NATIONALAERONAUTICS AND MEMORANDUM EFFECT OF HORIZONTAL-TAIL SUBSONIC OF SPAN ISOLATED LOADS UNSWEPT SIDESLIP By AND AND SPACE ADMINISTRATION 4-I-59L CHORD ON THE STABILITY TAIL STEADY Katherine W. CALCULATED DERIVATIVES ASSEMBLIES IN ROLL Booth SUMMARY been atic Subsonic span loads and the resulting stability calculated using the discrete-horseshoe-vortex series of horizontal tails in combination with derivatives have method for a systema vertical tail of aspect ratio 1.0 in order to provide information on the effect of varying the chord of the horizontal tail for isolated tail assemblies performing sideslip and steady-roll motions. In addition, the effects of horizontaltail dihedral angle for the sideslip case were obtained. Each tail surface considered had a taper ratio of 0.5 and an unswept quarter-chord line. The investigation covered variations in horizontal-tail chord, horizontal-tail span_ and vertical location of the horizontal tail. The span loads and the resulting total stability derivatives as well as the verticaland horizontal-tail contributions to these tail-assembly derivatives are presented in the figures for the purpose of showing the influence of the geometric variables. The results of this investigation showed trends that were in agreement with the results of previous investigations for variations in horizontal-tail span and vertical location of the horizontal tail. Variations in horizontal-tail chord expressed herein in terms of the rootchord ratio, that is, the ratio of horizontal-tail root chord to verticaltail root chord, were found to have a pronounce...






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