Test Flashcards
What is the max combat load for the AC-130U?
3000 x 25mm 256 x 40mm 100 x 105mm
What are the cooling restrictions for the 25mm?
450 rounds unrestricted Wait 35 minutes for another 450 rounds unrestricted ROT 1 sec for each round to be fired 15 round burst wait 15 sec 350 round burst, wait 11 min
What are the cooling restrictions for the 40mm?
Firing rate is 100 rounds per minute, burst length is 60 rounds until cooling
What are the cooling restrictions for the 105mm
3 to 10 rounds per minute for 30 rounds. 3 rounds a minute after Load the next round immediately prior to firing If a round is chambered for 5 minutes after firing at the sustained or maximum burst rate, the round must be removed
What are the tactical limitations and considerations for PGU-25/U
High dud rate when shooting soft target material (wet sand and water) at slant ranges greater than 10k/ft Problem with low velocity impacts. Velocity decay causes insufficient force upon impact to shear firing pin shoulders
What is the PGU-13/B fuze and what is the action time?
M505A3 fuze and fuze action time is less than 50 microseconds
What is the difference between PGU-13/B and PGU-46/B?
PGU-46/B HEI is a modified PGU-13/B which uses the FMU-151/B fuze and has a plugged tracer well
What is the difference between PGU-9/B and PGU-9B/B?
PGU9/B Misch metal and reached all arm condition as it leaves muzzle. Do not fire 40mm during detectable rainfall PGU-9B/B uses zirconium metal, produces some spark quality, increases fire starting capability. Adequate framentation for use against personnel.
What is the explosive fill of PGU-44 and why is it used?
Comp B, used because it is a very stable explosive filler
What are the 105mm penetration capabilities?
Penetrate 10 inches of 5000 PSI, reinforced concrete. Not sensitive to light impact, requires at least 2 inches of wood to initiate detonation
Label this picture of the FMU-153/B
What is the difference between the PGU-45 FMU-160/B Prox Fuze and the old M732 Fuze
FMU-160/B HOB 14.2 ft, automatic point detonation backup mode. Provides a better frag pattern than the M732.
What are the 5 explosion effects and what are the 2 primary?
Primary: Fragmentation, Blast/Shock
Other Effects: Cratering, Penetration, Incediary
How many rounds are in the 30mm AHS?
270 rounds in each bin/flex chute
List the SDB guidance hierarchy
Impact Velocity
Impact Angle
Impact Point
What is the penetration capability of the GBU-39/B versus the GBU-39A/B?
GBU-39/B: 1m dirt, 1m 5000 PSI concrete, 1% rebar
GBU-39A/B: Perforate 6 inches of reinforced concrete
What are the delay and fuze settings for the GBU-39/B and 39A/B
AB- No delay: HOB 7’ HOB 14’
AB + Delay
Contact
Contact + Delay (0, 5, 15, 25, 35, 45, 60)
What are the AGM-176 Flight Profiles? What are their impact angles and CEP50?
Direct Attack- achieves impact angle between 30-45 degrees, CEP50 2 meters.
High Impact Angle- Achieves impact angles between 50-70 degrees. CEP50 of 3 meters.
What is the AGM-176 HOB line cut-line?
‘Line cut-in’ function altitude: 4 ft (+3 ft, -2 ft)
What senses when its safe to arm the AGM-176 warhead
Electronic Safe, Arm, Fire (ESAF)
Electronic Arm Fire Device (EAFD) provides arming logic and high voltage necessary to start the ignition of the rocket, which is one of the requirements for the ESAF.
What is the advantage of the PGU-45 over the PGU-44?
Fragmentation
HE M1 (MOD) produces inconsistent fragmentation Produces approximately 3500 fragments ranging in size from a few grains to in excess of 400 grains
Effects in fragmentation fan are not uniform
HF HE M1 (MOD) solves this problem
Made of brittle high-fragmentation steel
Produces 14 000+ 0.22 cal bullet size fragments
Results in uniform distribution of fragmentation
