Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
26 Cards in this Set
- Front
- Back
|
Line of Sight |
imaginary line drawn from the firer's eye through the sights to the point of aim |
|
|
Line of Fire
|
the direction of the target from the gun |
|
|
Burst of Fire |
number of successive rounds fired with the same elevation and point of aim when the trigger is held to the rear |
|
|
Trajectory
|
the curved path a round takes during its flight; affected by air resistance and gravity |
|
|
Maximum ordinate |
highest point above the line of sight to which a projectile rises during its flight; occurs approximately 2/3 of the way along the trajectory. As range increases, so does height of the maximum ordinate |
|
|
Cone of Fire |
group of trajectories resulting from a burst of fire is termed the cone of fire. As the burst of fire strikes a vertical target, the rounds form a pattern, oval in shape with the density of shots decreasing towards the edges |
|
|
Beaten Zone |
pattern formed when the cone of fire strikes the ground, oval or cigar shaped. Dispersion makes only part of the beaten zone where 85% of the rounds fall the effective beaten zone |
|
|
Dangerous Space |
occurs between the muzzle of the machine gun and point of the first graze, depends on range, height of weapon above target and target itself, shape of ground, flatness of trajectory |
|
|
Dangerous Zone |
area covered by dangerous space and beaten zone. Target must be included in the dangerous zone to have effective fire |
|
|
surface danger zone |
includes possible impact areas on both sides of trajectory and any ricochet areas |
|
|
dead space |
any fold or depression in the ground that prevents a target from being engaged from a fixed position |
|
|
sustained fire |
after enemy has been suppressed, normal rate of fire for gunner, 7 bursts without barrel melting |
|
|
rapid fire |
high volume of fire on enemy to suppress rapidly, can't maintain without barrel melting |
|
|
cyclic |
only engage aircraft or protect perimeter, hold down trigger, not realistic, barrel will melt |
|
|
Grazing Fire |
maximum ordinate is not bigger than 1m, max effective range 600m on flat ground |
|
|
Plunging Fire |
Maximum ordinate is greater than 1m, dangerous zone not from muzzle to beaten zone, used high to low ground, allows for maneuver units beneath fire. |
|
|
Enfilade Fire
|
when long axis of beaten zone coincides with the long axis of the target. Frontal fire on enemy column, flanking fire on enemy line. Uses beaten zone to an advantage |
|
|
Frontal Fire |
Long axis of beaten zone is at a right angle to front or back of target. "You can see their little cat butts or their little cat faces through the sights" |
|
|
Flanking Fire |
delivered directly against flank of the target |
|
|
Oblique Fire |
Long axis of beaten zone is at an angle other than 90 degrees to front of target |
|
|
Fixed Fire |
Against a stationary point target when beaten zone will cover target without manipulation |
|
|
Traversing Fire |
Changes direction NOT elevation of aim; horizontal movement |
|
|
Searching Fire |
changes range by changing elevation; vertical movement |
|
|
Traverse and Searching Fire |
combination of direction and elevation changes |
|
|
Swinging Traverse |
on targets that require major changes in direction but no change in elevation |
|
|
Free Gun |
moving targets, change both direction and elevation |
