Annex B Ammunition Capabilities/Ballistics Flashcards
The M791 APDS-T has a __ __ __ penetrator.
Solid Tungsten Alloy
The discarding SABOT leaves the barrel at _____ on both sides of the gun-target line for ______>
60 degrees 100 meters
list the muzzle velocities for each of the rounds used for the 25mm.
M791, 1345 +/+20 mps (meter per second), M792 1,100 +/-20 mps. M793 TPT 1,100 (+/-20)mps. M910 1,525 +/- 20mps. MALA 1,385 +/-20 mps
what is the tracer burn time for the M791 APDS-T?
1.7 seconds
Name the 6 types of the 25mm ammo by name and nomenclature
M791 Armor-Piercing sabot with tracer (APS-T)
M919 Armor-Piercing fin-stabilized Discarding Sabot with tracer (APFSDS-T)
M792 high explosive incendiary with tracer (HEI-T)
M910 target practice discarding sabot with tracer (TPDS-T)
M793 target practice with tracer (TP-T)
define grazing impact
the projectile may detonate if impact is sufficient enough during a direct _______???
List the maximum effective range for each of the 25mm rounds.
M791 2000 meters
M919 2500 meters
M910 2000 meters
M793 1600 meters
the M792 HEI-T round has ____ grams of _____.
32 HEI-MIX
what causes the sabot to discard
set back, centrifugal force, & air pressure.
list the 3 ways the M792 HEI-T round detonates.
Direct impact, grazing impact, self destruct.
what is the bursting radius for the M792 HEI-T
SM 16 - 200 meters
what stabilizes the m919 APFSDS-T while in flight
screw on fms
List the tracer burn range for each of the 25mm ammunition
M791 2000m M792 2000m M793 2000m M910 2000m M919 2500m
what round is ballistically matched to the M792 round?
M793 TP-T
How is the M791 stabilized while in flight
spin- stabilized
what is the nomenclature of the fuse in the M792 round
M758 fuse
what is the M919 penetrator made of ?
depleted uranium
M919 penetrates solely by _____ _____ _____
kinetic energy
Define ballistics
Science of the motion of projectiles.
Define line of sight
straight line between the gun sight and the target.
Define line of elevation
prolongation of the line running through the axis of the gun bore.
Define line of departure
prolongation of line running through the axis of the gun bore as the projective leaves the muzzle.
Define vehicle gun jump
angle measure in mils, between the line of departure of the projectile and the line of elevation.
Define trajectory
path of the projectile from the muzzle of the weapon to the first point of impact.
Define range
weapon to target distance.
Define superelevation
angle measure in the mils, between the line of sight and the line of elevation.
Define DR/DSE
change in range for a’mil change in super elevation.
Define DH/DR
change in height for a 100 meter change in range.
Define drift
number of mils the projectile moves to the right of the gun- target line because of the spin caused by the firing.
Define time of flight
amount of time it takes a projectile to reach a target at a selected range.
Define 10 km/h cross wind deflection
effect of wind defection assumes 10 km/h cross wind the correction is applied into wind. When wind speed is different from 10 km/h the point of aim must be calculated.
Define Maximum ordinate
maximum height the projectile travels above the line of sight at a given range.
Define range to maximum ordinate
range at when the maximum ordinate is reached. out to this range the projectile is ascending. the range to max ordinate always occur shortly beyond half the target range.
Define angle of fall
number of mils between the projectile is trajectory at impact and the line of sight
Define remaining velocity
speed of the projectile in meters per second at a selected range.
State the formula to convert Mils to degrees
mils x 0.05625 = degrees
___________ is the path of the projectile from the muzzle of the weapon to the first point of impact.
.
APDS-T maintains its accuracy out to _______ metes
2200
what is the max effective range of the M793 round?
1600m
what are the characteristics of the 7.62mm armor piercing round
tip painted black.
list the 5 ammunition types associated with the M240 series Machinegun
M62 tracer, tracer (M62 over head fires) Bull (M80) Armor piercing M61 Dummy M63
what is the purpose of the tracer cartridge used with the M240 series machinegun.
for observation of fire incendiary effect signal and marking target.
what is the max effective range for the M240>
900 meters coax (sight and tracer limited)
what is the max range of the M240
HW2Q1
900 meters (?)
what is the muzzle velocity for the M240
2750 feet per second.
List in writing the 6 ammunition classifications used with the m240 series machinegun
.
State the description (purpose) of the Ball Cartridge used with the m240 series machinegun
for observation of fire incendiary effect signal and marking target
State the physical characteristic of the Ball (M80) Cartridge used with the M240 MG
.?
State the physical characteristic of the Tracer (M62) Cartridge used with the m24 series machinegun
.
list the 5 parts of the TP-T round
.
at wgat range does m793 lose its effectiveness
1600 m (?).
what round shares the same ballistics as M791
.
Explain how armor piercing ammunition penetrates the target
.
