Time Histories of the Aerodynamic Loads on the Vertical and Horizontal Tail Surfaces of a Jet-Powered Bomber Airplane During Sideslip Maneuvers at Approximately 20,000 Feet Page: 3 of 29
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2 NACA RM L51A08
As the various phases of the flight-investigation are completed,
data are reported in time-history form. No analysis of the results will
be made until the flight program has been completed.
Time histories of the aerodynamic loads and deformations for the
B-45A airplane during level flight, aileron rolls, abrupt pull-ups,
and gradual turns have been presented in references 1 to 6. Presented
in this paper are time histories of the vertical- and horizontal-tail
loads. obtained during maneuvers which approximated steady sideslipping
conditions. The maneuvers were made at a pressure altitude of approxi-
mately 20,000 feet-and covered a Mach number range from 0.31 to 0.76.
The data were obtained with a modified configuration of the original
B-45A airplane. The modification consisted of installing reflex wing
flaps, rigging the ailerons up, and adding positive twist by warping the
tips of the horizontal-tail leading edge up. A comparison of the
horizontal-tail loads resulting from 1 g trim level flight for the present
configuration airplane and for the original configuration airplane is
also presented.
SYMBOLS
M Mach number
CNA airplane normal-force coefficient (nw/qS)
q dynamic pressure, pounds per square foot
n normal acceleration at airplane center of gravity, g units
W airplane weight, pounds
S wing area, square feet
LyL horizontal-tail load, left side, pounds
LHR horizontal-tail load, right side, pounds
LHL - LgR horizontal-tail-load dissymmetry, pounds
LV vertical-tail total load, poundsa
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Cooney, T. V. & McGowan, William A. Time Histories of the Aerodynamic Loads on the Vertical and Horizontal Tail Surfaces of a Jet-Powered Bomber Airplane During Sideslip Maneuvers at Approximately 20,000 Feet, report, March 14, 1951; (https://digital.library.unt.edu/ark:/67531/metadc58775/m1/3/: accessed April 18, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.