Target Stands,free targets

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Target Stands by TuffsteelTM

target shooting, handgun training

Abbreviations

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A
Bullet cross section area; A = pd2/4
a
Velocity of sound in air, a = a(p,T,h)
B
Symbolic variable, indicating bullet geometry
d
Bullet diameter
ec
Unit vector into the direction of the bullet' s longitudinal axis
et
Unit vector into the direction of the tangent to the trajectory
g
Acceleration of gravity; g = g(j ,y)
h
Relative humidity of air
Ix
Axial (or polar) moment of inertia of the bullet
Iy
Transverse (or equatorial) moment of inertia of the bullet
l
Bullet length
m
Bullet mass
Ma
Mach number
p
Air pressure
Re
Reynolds number
rE
Mean radius of the earth; rE = 6 356 766 m
T
Absolute air temperature
vw
Bullet velocity with respect to wind system
y
Altitude of bullet above sea level
a
Azimuth angle
d
Yaw angle
Q
Angle of inclination of the trajectory
r
Air density r = r (p,T,h)
m
Absolute viscosity of air; m = m(T)
j
Degree of latitude
w
Spin rate of bullet (angular velocity)
wE
Angular velocity of the earth´s rotation; wE = 7.29.10-5 rad/s
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