Detailed study Tank and 25mm

Question 1

What is the common propellant type of 25mm?

Answer 1

WC 890 (Double base)

Question 2

What primer is used in 25mm cart cases?

Answer 2

M115, Percussion type

Question 3

What is the common booster in 25mm?

Answer 3

IB-52 Booster

Question 4

What are the majority of 25mm cart cases constructed of?

Answer 4

Steel cart case painted olive drab/dark green

Question 5

What is the M28 link made of?

Answer 5

Phosphated steel

Question 6

What is the maximum effective range of the M791?

Answer 6

2000m

Question 7

What does the projectile of the M791 consist of?

Answer 7

Nose cap - Polyethylene
Sabot - Nylon
Penetrator - tungsten alloy
Windshield & base - Alluminium alloy

Question 8

What is the minimum burn time of the tracer in the M791?

Answer 8

1.4sec

Question 9

What is the propellant of the M791?

Answer 9

WC886 - double base

Question 10

What is the fuze used in the M792?

Answer 10

M758 (HMX/PBXN-5 booster) Mechanical Point detonating

Question 11

What is the main fill of the M792?

Answer 11

H761 HEI

Question 12

What is the safe arming distance of the M792?

Answer 12

10m

Question 13

What is the minimum self destruct time of the M792?

Answer 13

6.2 Sec

Question 14

What is the length of the delay element on impact of the MP-T SD MK2?

Answer 14

0.3 m/s

Question 15

What is the tracer burn time of the MP-t SD mk2?

Answer 15

5.3 secs

Question 16

What happens when the MP-T SD MK2 impacts target?

Answer 16

On striking the target the aluminium nose cap is crushed and if sufficient velocity is generated by the rate of deformation, the incendiary composition will ignite. The heat and pressure generated by the incendiary composition detonates the HE which causes fragmentation of the steel body. The delay of 0.3 secs allows the projectile to penetrate the target before detonating/

Question 17

What markings are located on the base of the 120mm CC?

Answer 17

•Lot details of base
•Round type
•Round name
•Identification markings
•Country of manufacturer
Heat treatment number

Question 18

What is common of all 120mm Live Rounds?

Answer 18

Propellant – JA2 (double base)

Primer – M125 (exception KE-W A2 has M129)

Question 19

What are the two modes available to the M830A1 fuze?

Answer 19

• Ground – Point Detonating

* Air – Proximity

Question 20

What is the purpose of the 6 equally spaced slots in the cone of the TPCSDS-T M856?

Answer 20

Impart spin to reduce ballistic stability

Question 21

What is the max range of the TPCSDS-T M856?

Answer 21

8000m

Question 22

What is the NEQ of the Abrams reactive armour tile?

Answer 22

3.180kg

Question 23

How many tiles are placed on the side of an M1A1?

Answer 23

31

Question 24

What is the M831A1 TP-T designed to simulate?

Answer 24

The firing of the obsolete M830 HEAT-MP-T round

Question 25

What does the 120mm propulsion system consist of?

Answer 25

CCC
CB&SA
Combustible disk
Main charge propellant
Spring disc
electric primer
retaining ring
propellant containment bag

Question 26

What is the CCC made up of?

Answer 26

Painted and sealed nitrocellulose mix

steel case base with silicon rubber seal assembly

Question 27

What is common of all 120mm TP Rounds?

Answer 27

Propellant - M14

Primer - M125