Yaw Characteristics and Sidewash Angles of a 42 Degree Sweptback Circular-Arc Wing With a Fuselage and With Leading-Edge and Split Flaps at a Reynolds Number of 5,300,000 Page: 4 of 40
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CD drag coefficient (D/qS)
Cx longitudinal-force coefficient (X/qS)
Cy lateral-force coefficient (Y/qS)
CZ rblling-moment coefficient (L/qSb)
Cm pitching-moment coefficient (M/qSE)
Cn yawing-moment coefficient (N/QSb)
CZ rate of change of rollin -moment coefficient with angle of
yaw, per degree (C1 )
C rate of change of yawing-moment coefficient with angle of
* yaw, per degree (Cn/'*)
Cv rate of change of lateral-force coefficient with angle of
yaw, per degree (c/iy)
Lift = -Z
D drag, -X at zero yaw
I longitudinal force
Y lateral force
Z vertical force
L rolling moment
M pitching moment
N yawing moment
a. angle of attack of chord line measured in plane of symmetry
* angle of yaw, positive when right wing is back
a sidewash angle, angle between direction of air flow and tunnel
center line measured in XY-plane, positive when angle of
attack at vertical tail is decreased
av average sidewash angle (r 2 dh
S wing area
St tail areaNACA PM No. LTI30
3
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Salmi, Reino J. & Fitzpatrick, James E. Yaw Characteristics and Sidewash Angles of a 42 Degree Sweptback Circular-Arc Wing With a Fuselage and With Leading-Edge and Split Flaps at a Reynolds Number of 5,300,000, report, December 10, 1947; (https://digital.library.unt.edu/ark:/67531/metadc58162/m1/4/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.