64 gunnery Flashcards
Neutralization knocks a target out of action temporarily. Neutralization of a target occurs when it suffers ___ or more casualties or damage
10%
________________ is caused by the motion of the helicopter as the projectile leaves the weapon
Angular rate error
What are the four types of ballistics?
Interior, exterior, aerial and terminal
Rockets are most accurate when fired IGE or OGE?
OGE
Angular rate error is an example of what type of ballistic?
Aerial
Maximum effective range is defined as?
The longest range at which a weapon has a 50% probability of hitting a target
Is the hellfire missle affected by angular rate error?
No, guided weapons are not affected by angular rate error
what are the two types of fire?
Direct and indirect
what are the three modes of fire?
Hover, running and diving
what are the four “T”s associated with aircraft control(fire techniques) during rocket engagements?
Target, torque, trim, target
Trajectory shift and projectile drift combine to create what?
Port-starboard effect
Rockets will accelerate as they leave the launcher. The crosswind force acting upon the fins which causes the nose of the rocket to turn into the wind is known as what?
Relative wind effect
Gravity, Yaw and wind drift are what type of ballistics?
Exterior
What are the three factors that effect dispersion?
Vibrations, sights, boresights.
Angle of impact is a characteristic of what type of ballistic?
Terminal
what is the cause of the greatest error for free flight rockets (besides poor pilot technique) and what is done to minimize that error?
Thrust misalignment, rocket spin
Firing rockets at maximum ranges increases/decreases dispersion and increases/decreases accuracy
Decreases and increases
yaw is the angle between the centerline of a projectile and its trajectory, which results in a changing trajectory and an increase in what?
Drag?
Where would a projectile have its maximum yaw?
Near the muzzle
What two factors determine the amount of wind drift of a projectile?
Time of flight and wind speed acting on the cross-sectional area of a projectile
The exterior ballistic which causes a clickwise spinning projectile to move to the right is called what?
Projectile drift
Fragmentation effects can be expected from the M789 HEDP 30mm round within a ___ radius
4 meter
What is the approximate muzzle velocity of the 30mm round?
2640fps
What are the visual markings of the M789 30mm HEDP round?
Black projectile with yellow band and yellow markings