Weapons Delivery Principles And Procedures
your mil setting by causing a false sight picture. Excessive g will cause an early sight picture. So, if
you apply excessive g to obtain the proper sight picture and have all other parameters correct, your
hit will be short. Insufficient g will cause a long hit. In addition, incorrect g will have another undesir-
able effectchanging your dive angle. Proper g results in a straight flight path and a constant dive
angle. Too much g will shallow the dive angle, and insufficient g will steepen it.
Because of the depression of the sight line below the line of flight, any bank will cause a false sight
picture. This error is caused by the pendulum effect (Figure 26), so that if you roll to the right, your
pipper will appear to move to the left along the ground. Thus, if you release with the pipper on target
while you are in a right bank, your hit will be to the right and short.
PENDULUM EFFECT: With left
wing down, the sight picture
WINGS LEVEL: Flight path and
is to the right; the bomb will
sight line coincide.
follow the flight path and
strike to the left.
Figure 26: PENDULUM EFFECT
A skid or sideslip can also affect the trajectory of the weapon by causing a false sight picture. Unless
the ball is centered (balanced flight), the aircraft will not be moving in the direction the pipper is
looking. So, if the ball is out to the right (the aircraft yawing to the left) when you release a bomb with
the pipper on the target, your hit will be to the right of the target. In contrast to bombs, which depend
on the aircraft for their velocity, forward-firing ordnance tends to travel initially in the direction it was
fired, even in unbalanced flight. How this principle can be applied for correction with rockets will be
discussed later in this section.