Directed Study 120mm Flashcards
M830A1 HEAT MP-T FZD M774 fuze modes and function
— of proj allows release mechanism in the M774 to release the — from the first — position. After proj exits bore, — allows rotor to move into the armed position, aligning explosive —. In bore setback causes — generators to charge up M774 firing — and M74 — fuze capacitor.
When tgt senses by —, firing signal sent to M774 fuze. Capacitor provides energy to initiate — detonator. M69 — initiate fuze lead cup, which initiates — cup, which initiates —. Cooper jet, with — and —, defeats the tgt.
PIBD and Frontal Impact Switch Assembly Ground (PD) or Air (Prox)
Acceleration of proj allows release mechanism in the M774 to release the rotor from the first safe position. After proj exits bore, deceleration allows rotor to move into the armed position, aligning explosive train. In bore setback causes voltage generators to charge up M774 firing capacitor and M74 prox fuze capacitor.
When tgt senses by M74, firing signal sent to M774 fuze. Capacitor provides energy to initiate M69 detonator. M69 det initiate fuze lead cup, which initiates booster cup, which initiates warhead. Cooper jet, with shrapnel and blast, defeats the tgt.
M830A1 capabilities
Defeat light armoured vehicles, helis, and soft targets such as bunkers
M1028 warhead components
7075 Aluminium two piece body (fwd has four v-notch axial slots)
nylon obturator band
7068 aluminium cap frangible
foam reinforced with four vertical PVC posts
1100 (9.5mm) tungsten 8.3gs
M865 TPCSDS-T range
8000m (reduced safety range traces)
KE-W A2 purpose
Defeat armoured targets
M865 TPCSDS-T purpose
Training round for KE-W A2
Common components across 120mm
Propulsion assembly:
Case Base and Seal Assembly (CBSA)
Spring disc
Retaining ring
CCC - painted and sealed NC mixed w/ wood pulp, polyurethan, N-Methyl-N, N diphenylurea
M125/M129 primer
JA-2/M14 Propellant
combustible disc
propellant containment bag
