The effects of extensible rocket racks on lift, drag, and stability of a 1/10-scale rocket-boosted model of the McDonnell XF3H-1 airplane for a Mach number range of 0.60 to 1.34 : TED No. NACA DE 31 Page: 4 of 43
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NACA RM SL55F15
* ** an W
,, , CN normal-force coefficient, - W
... at W
" Cy lateral-force coefficient, -
c wing mean aerodynamic chord, ft
g acceleration due to gravity, 32.2 ft/sec2
IX mass moment of inertia of model about longitudinal principal
ly mass moment of inertia of model about transverse axis, slug-ft2
IZ mass moment of inertia of model about axis perpendicular to
longitudinal principal axis and transverse axis, slug-ft2
Z vertical distance from center of gravity of model to centroid
of exposed frontal area of rocket rack of any rack exten-
M free-stream Mach number
P period of motion, sec
q dynamic pressure, O.7(atmospheric static pressure)M2, lb/ft2
1 de c
57.3 dt 2V
R Reynolds number based on wing mean aerodynamic chord
S area, sq ft
T time, sec
T1/2 time for amplitude of motion to damp to one-half initial
V free-stream velocity, ft/sec
W weight of model, lb
a angle of attack of wing chord plane, positive nose up, deg
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Crabill, Norman L. The effects of extensible rocket racks on lift, drag, and stability of a 1/10-scale rocket-boosted model of the McDonnell XF3H-1 airplane for a Mach number range of 0.60 to 1.34 : TED No. NACA DE 31, report, June 16, 1953; (digital.library.unt.edu/ark:/67531/metadc59639/m1/4/: accessed June 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.