SWD

Question 1

M151

Answer 1

Warhead: 2.3#, comp-B-4

Total Weight: 23.2

Burst Radius: 10m

Lethality Radius: 50m

Fuze: M423

Arming Gs: 20

Arming Distance: 140-300’

Arming Time:.63-.82 sec

Range: 300-7k

Question 2

GAU-21

Answer 2

0.50 cal machine gun

950-1100 rounds per minute

Overall Lenght: 66.5 in

Weight: 80 lbs

Maximun Range: 6,500M

Max Effective: 1,850M

Tracer Burnout 1,100M

300 round burst combat only 600 round burst prohibited

Ball,Blank, tracer, Dim Tracer, Armor piercing, Armor piercing tracer, Armor piercing Incendiary, Armor piercing incendiary tracer, and Armor piercing Explosive Incendiary.

Question 3

GAU-17

Answer 3

3,000 Rounds Per Minute

119 lbs empty

Maximum Range: 3,500M

Max Effective: 1,100M

Question 4

M240D

Answer 4

7. 62 650-950 RPM
8. 5 lbs

Max Range: 3,725m

Max Effective Range: 1,200m

tracer Burnout: 900m

Cyclic Fire: 1min

Rapid Fire: 2 min

Sustained Fire 10 min

Ball, tracer, Dim Tracer, armor Piercing

Question 5

Ball Cartridges

Question 6

Tracer Cartridges

Answer 6

Allow gunner to see the line of fire

Question 7

Armor Piercing Cartridges

Question 8

Armor Piercing Incendiary Cartridges

Question 9

Armor Piercing Explosive Incendiary Cartridge

Answer 9

the APEI Cartridge contains an explosive or incendiary component consisting of 9.2 grains of zirconium particles, 13.1 grains of I-36 incendiary mix and 15.4 grains of comp A-4

This Pyrotechnically Initiated Explosive 9PIE) projectile provides penetration, fragmentation and fire starting capabilities.

Question 10

Basic Rocket Components

Answer 10

Fuze

Warhead

Motor

Nozzle/Fin Assembly

Question 11

LAU- 61

Answer 11

all-metal reusable launcher with a capacity of 19 2.75 in rickets.

C/A can be loades with MK66 motors only

Ripple: fires all rockets within a 40-millisecond interval between departing rockets.

has a thermal protective coating on the exterior surface and requires the use of thermal barriers for thermal protection for all shipboard ops

Question 12

LAU-130

Answer 12

All-metal reusable launcher. Nearly identical to LAU-61 except lacks thermal protective coating.

Question 13

LAU-68 D/A

Answer 13

7-2.75 in rockets

Mk66 motors only

RIPPLE: 40-millisecond interval btwn rockets

Question 14

LAU-131/A

Answer 14

Identical to LAU68D/A except protective thermal coating

Question 15

LAU 68F/A

Answer 15

Extended length launcher 7-2.75in rockets.

Length required to accommodate APKWS II, can carry other rockets

Question 16

Rocket Motors 2.75in

Answer 16

Components: Igniter, Propellant grain with a stabilizing rod, nozzle, fin assembly, and firing contact disk/pad

ignited by 28vdc A/C power via intervalometer to tube firing contact.

Gas pressure resulting from the burning igniter charge ruptures either the igniter case (mod 2) or igniter vent hole seals (Mod 4) and ignites propellant grain

Propellant burns inside to outside to minimize CG shifts

Propelland gases rupture the nozzle seals and exert fwd pressure that overcomes the launcher tube locking detent

salt-coated stabilizing rod prevents unstable burning of the grain and reduces flash and afterburning that contribute to compressor stalls and flameout of jet engines.

Star perforation is to produce near constant thrust level

Question 17

Mod 2 Vs Mod 4

Answer 17

Mod2: contains tubular stabilizing rod that has a 5-wire hero, fliter, , strung internally through the rod. HERO filter prevents inadvertent ignition of the rocket motor from currents induced by exposure to electromagnetic fields, yet allows enough direct current to pass to the squib IOT fire the motor.

Mod4: improvements wich make it the only true HERO safe rocket motor.

1,415 lbs thrust 1.1 sec

Question 18

Rocket Warheads

Answer 18

1. HE-FRAG
2. HEI (High explosive incendiary)
3. Flechette
4. Smoke-RP
5. Illum (IR and VIS)
6. Practice

Question 19

M151 (HE-FRAG)