|
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 |
