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Master Gunners 1-19 > Annex B Ammunition Capabilities/Ballistics > Flashcards

Annex B Ammunition Capabilities/Ballistics Flashcards

1
Q

The M791 APDS-T has a __ __ __ penetrator.

A

Solid Tungsten Alloy

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2
Q

The discarding SABOT leaves the barrel at _____ on both sides of the gun-target line for ______>

A

60 degrees 100 meters

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3
Q

list the muzzle velocities for each of the rounds used for the 25mm.

A

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

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4
Q

what is the tracer burn time for the M791 APDS-T?

A

1.7 seconds

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5
Q

Name the 6 types of the 25mm ammo by name and nomenclature

A

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)

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6
Q

define grazing impact

A

the projectile may detonate if impact is sufficient enough during a direct _______???

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7
Q

List the maximum effective range for each of the 25mm rounds.

A

M791 2000 meters
M919 2500 meters
M910 2000 meters
M793 1600 meters

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8
Q

the M792 HEI-T round has ____ grams of _____.

A

32 HEI-MIX

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9
Q

what causes the sabot to discard

A

set back, centrifugal force, & air pressure.

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10
Q

list the 3 ways the M792 HEI-T round detonates.

A

Direct impact, grazing impact, self destruct.

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11
Q

what is the bursting radius for the M792 HEI-T

A

SM 16 - 200 meters

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12
Q

what stabilizes the m919 APFSDS-T while in flight

A

screw on fms

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13
Q

List the tracer burn range for each of the 25mm ammunition

A 
M791 2000m 
M792 2000m 
M793 2000m 
M910 2000m
M919 2500m
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14
Q

what round is ballistically matched to the M792 round?

A

M793 TP-T

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15
Q

How is the M791 stabilized while in flight

A

spin- stabilized

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16
Q

what is the nomenclature of the fuse in the M792 round

A

M758 fuse

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17
Q

what is the M919 penetrator made of ?

A

depleted uranium

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18
Q

M919 penetrates solely by _____ _____ _____

A

kinetic energy

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19
Q

Define ballistics

A

Science of the motion of projectiles.

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20
Q

Define line of sight

A

straight line between the gun sight and the target.

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21
Q

Define line of elevation

A

prolongation of the line running through the axis of the gun bore.

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22
Q

Define line of departure

A

prolongation of line running through the axis of the gun bore as the projective leaves the muzzle.

23
Q

Define vehicle gun jump

A

angle measure in mils, between the line of departure of the projectile and the line of elevation.

24
Q

Define trajectory

A

path of the projectile from the muzzle of the weapon to the first point of impact.

25
Q

Define range

A

weapon to target distance.

26
Q

Define superelevation

A

angle measure in the mils, between the line of sight and the line of elevation.

27
Q

Define DR/DSE

A

change in range for a’mil change in super elevation.

28
Q

Define DH/DR

A

change in height for a 100 meter change in range.

29
Q

Define drift

A

number of mils the projectile moves to the right of the gun- target line because of the spin caused by the firing.

30
Q

Define time of flight

A

amount of time it takes a projectile to reach a target at a selected range.

31
Q

Define 10 km/h cross wind deflection

A

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.

32
Q

Define Maximum ordinate

A

maximum height the projectile travels above the line of sight at a given range.

33
Q

Define range to maximum ordinate

A

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.

34
Q

Define angle of fall

A

number of mils between the projectile is trajectory at impact and the line of sight

35
Q

Define remaining velocity

A

speed of the projectile in meters per second at a selected range.

36
Q

State the formula to convert Mils to degrees

A

mils x 0.05625 = degrees

37
Q

___________ is the path of the projectile from the muzzle of the weapon to the first point of impact.

A

.

38
Q

APDS-T maintains its accuracy out to _______ metes

A

2200

39
Q

what is the max effective range of the M793 round?

A

1600m

40
Q

what are the characteristics of the 7.62mm armor piercing round

A

tip painted black.

41
Q

list the 5 ammunition types associated with the M240 series Machinegun

A

M62 tracer, tracer (M62 over head fires) Bull (M80) Armor piercing M61 Dummy M63

42
Q

what is the purpose of the tracer cartridge used with the M240 series machinegun.

A

for observation of fire incendiary effect signal and marking target.

43
Q

what is the max effective range for the M240>

A

900 meters coax (sight and tracer limited)

44
Q

what is the max range of the M240

HW2Q1

A

900 meters (?)

45
Q

what is the muzzle velocity for the M240

A

2750 feet per second.

46
Q

List in writing the 6 ammunition classifications used with the m240 series machinegun

A

.

47
Q

State the description (purpose) of the Ball Cartridge used with the m240 series machinegun

A

for observation of fire incendiary effect signal and marking target

48
Q

State the physical characteristic of the Ball (M80) Cartridge used with the M240 MG

A

.?

49
Q

State the physical characteristic of the Tracer (M62) Cartridge used with the m24 series machinegun

A

.

50
Q

list the 5 parts of the TP-T round

A

.

51
Q

at wgat range does m793 lose its effectiveness

A

1600 m (?).

52
Q

what round shares the same ballistics as M791

A

.

53
Q

Explain how armor piercing ammunition penetrates the target

A

.

Master Gunners 1-19 (15 decks)

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