Effect of carriage mass upon the loads and motions of a prismatic body during hydrodynamic impact Page: 4 of 46
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NACA TN 3619 3
g acceleration due to gravity
G corrected approach parameter, +t J
J1 three-dimensional mass parameter
kl penetration parameter
2 wetted length along keel
mw two-dimensional water mass in transverse plane
M pitching moment, positive nose up
Ql yelocity parameter
s distance from foremost immersed station along keel to flow
t time after water contact
x distance parallel to undisturbed water surface, positive in
direction of float motion
k horizontal velocity of float
x horizontal acceleration of float
z immersion of keel at step normal to undisturbed water surface,
Vertical velocity of float
Z vertical acceleration of float
p angle of dead rise
f(p) dead-rise function
7 flight-path angle
Distance from keel to undisturbed water surface in any given
flow plane, normal to'keel, positive downward
--t- -- -C~
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Markey, Melvin F. Effect of carriage mass upon the loads and motions of a prismatic body during hydrodynamic impact, report, March 1, 1956; (digital.library.unt.edu/ark:/67531/metadc57872/m1/4/: accessed October 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.