Control Hinge-Moment and Effectiveness Characteristics of a 60 Degree Half-Delta Tip Control on a 60 Degree Delta Wing at Mach Numbers of 1.41 and 1.96 Page: 2 of 41
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NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS
CONTROL HINGE-MOMENT AND EFFECTIVENESS CHARACTERISTICS
OF A 600 HALF-DELTA TIP CONTROL ON A 600 DELTA WING
AT MACH NUMBERS OF 1.41 AND 1.96
By Lawrence D. Guy
An investigation of a half-delta wing-tip control on a semispan
600 delta-wing-fuselage combination was conducted in the Langley 9-
by 12-inch supersonic blowdown tunnel. The control spanned the outer
one-third of the exposed wing semispan and had the hinge line located
at the 45.5-percent station of the control mean aerodynamic chord.
Control-surface hinge moments and bending moments, as well as the char-
acteristics of the complete wing-fuselage combination, were obtained
over a large range of control deflection and angle of attack at Mach
numbers of 1.41 and 1.96 and Reynolds numbers of 2.4 x 106 and 2.0 x 106,
The control hinge moments were relatively small, for moderate angles
of attack, over the entire control-deflection range of 300. At large
angles of attack, however, large negative increases in hinge moment
occurred with increasing absolute magnitude of the deflection. The
values of the hinge-moment parameter, Chy, at moderate angles of attack
were considerably more positive at negative deflections than at positive
deflections. This characteristic apparently was typical of control
arrangements having tip-balance areas extending to the wing leading edge,
as was shown to exist for three tip horn-balanced control configurations.
Because of the nonlinear nature of the hinge-moment curves, linear
theory was of little value for predicting hinge moments except at small
angles of attack and control deflection.
The control was effective throughout the range of the investigation
which included angles of attack from Oo to 240 and angles of control
deflection from -300 to 300 at a Mach number of 1.96.
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Guy, Lawrence D. Control Hinge-Moment and Effectiveness Characteristics of a 60 Degree Half-Delta Tip Control on a 60 Degree Delta Wing at Mach Numbers of 1.41 and 1.96, report, October 14, 1952; (https://digital.library.unt.edu/ark:/67531/metadc59409/m1/2/: accessed April 24, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.