Low-speed static-stability and rolling characteristics of low-aspect-ratio wings of triangular and modified triangular plan forms Page: 4 of 45
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NACA RM No. L'829 3
Cn yawing-moment coefficient (N/qb)
L lift, pounds
X longitudinal force, pounds
Y lateral force, pounds
L' rolling moment about X-axls, foot-pounds
M pitching moment about Y-axis, foot-pounds
N yawing moment about Z-axis, foot-pounds
A aspect ratio )
b span, feet
S area, square feet
o local chord measured parallel to plane of symmetry, feet
mean aerodynamic chord., feet y / c2 dy
cr root chord, feet
X taper ratio
x longitudinal distance from apex of triangle to quarter-chord.
point of any chordwise section, .feet
S.longitudinal distance from apex of triangle to quarter-chord point
of mean aerodynamic chords, feet (2eb/2 -x dy
R Reynolds number
p density of air, slugs per cubic foot
V free-stream velocity, feet per second
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Jaquet, Byron M. & Brewer, Jack D. Low-speed static-stability and rolling characteristics of low-aspect-ratio wings of triangular and modified triangular plan forms, report, March 29, 1949; (https://digital.library.unt.edu/ark:/67531/metadc57959/m1/4/: accessed April 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.