UHC Exam (2026/2027) | Actual Questions and Answers Latest
Updated 2026/2027 (Graded A+)
•
What are the 4 components of our 2.75" rockets?
- ✔✔Fuze, Warhead, Motor, Nozzle/Fin Assembly
•
What are the max ranges and max effective ranges of the GAU-21, GAU-17, and M240D? Tracer
Burnout for each?
- ✔✔GAU-21: 6500, 1850, 1100m; GAU-17: 3500, 1100, 900m; M240D: 3725, 1200, 900m
•
What are the differences between the two fuzes authorized for the M151?
- ✔✔M423: Distance to arm = 43-92m; M427 = 243-381 (used for higher speed aircraft)
•
Describe the M257 and M278.
- ✔✔M257 (overt illumination): 19deg pitch, 3500m/1800' HAL, 120s burn. M278 (IR
illumination): 26deg pitch, 3000m/2500' HAL, 180s burn, 0.7-1.1 micron (peak @ 0.8). Both =
9.5s to drogue chute, 13.5s to flare, 13-15fps fall.
•
Rule of thumb for correcting wind drift when shooting illum
- ✔✔10kt crosswind = 5deg hdg into wind (300m)
•
How far will a spent illum rocket motor travel?
- ✔✔700-1000m beyond the target.
•
What range of IR energy is produced by the M278 illumination rocket warhead?
- ✔✔0.7-1.1 micron (peak @ 0.8)
•
List the danger close numbers for the M151 2.75" rockets, and M229 2.75" rockets for 300, 800, and
1500m. List danger close numbers for Flechette rockets and APKWS.
- ✔✔M151/M229 = 110, 135, 170m. Flechette = 235m @1000m. APKWS = 105m @ all
distances.
•
List the danger close numbers for 20mm, HF, and JAGM
- ✔✔20mm = 45, 95, 155m @ 300, 800, 1500m. AGM-114 FA/K/L/M/N(4/6)/P(2A) = 115.
AGM-114R = 130. AGM-114R2 = 145.
, •
The Mk-66 series motor produces an average thrust of _____ lbs of thrust for a duration of ____
seconds and weighs approximately _____ lbs.
- ✔✔1415lbs / 1.1s / 13.65lbs
•
The M113A fuze is an acceleration-deceleration (BD) fuze permanently installed in the ______ and the
______ Flechette warheads. Fuze functioning at motor burnout provides Flechette expulsion. The fuze
requires ____ Gs in order to arm and fires when deceleration reaches approximately ____ Gs. Air travel
to arm is approximately ______ meters with the fuze being completely armed in about ____ seconds
- ✔✔WDU-4A/A. My 149 MOD 0. 17.5Gs. 11Gs. 400-600m. 1.2s
•
WDU-4A/A flechette contains ______ x ____ grain Flechettes whereas the Mk 149 MOD 0 dispenses
______ x ____ grain flechettes.
- ✔✔2205x20grain; 1179x60grain
•
What are the allowable PRF Codes for an APKWS?
- ✔✔1111 - 1488
•
What warhead/fuze combinations are allowed for use in APKWS?
- ✔✔M423 / M151; M423 / M282; M423 / M229; WTU-1B
•
What are the times of flight for HF?
- ✔✔40, 32, 25, 19, 15, 10, 7, 4 (8, 7, 6, 5, 4, 3, 2, 1km)
•
What are the TOF and mil settings for APKWS
- ✔✔18/230, 12/190, 8/150, 5/110, 4/90 (5, 4, 3, 2, 1.5km)
•
What are the ceiling considerations for an APKWS? What will an APKWS do if it does not receive
LASER energy after launch?
- ✔✔1000' cloud clearance above launch. Enter attitude hold and land long (up to 9km)
•
The photocathode in NVGs are responsive to what spectrum of energy?
- ✔✔400-950nm. Peak at 600- 900nm.
•
Name the BSBII FOV available in IR mode. Which ones are available in CCDTV?
- ✔✔WFOV, MFOV, NFOV, SNFOV, UNFOV (middle 3 = CCDTV)
Updated 2026/2027 (Graded A+)
•
What are the 4 components of our 2.75" rockets?
- ✔✔Fuze, Warhead, Motor, Nozzle/Fin Assembly
•
What are the max ranges and max effective ranges of the GAU-21, GAU-17, and M240D? Tracer
Burnout for each?
- ✔✔GAU-21: 6500, 1850, 1100m; GAU-17: 3500, 1100, 900m; M240D: 3725, 1200, 900m
•
What are the differences between the two fuzes authorized for the M151?
- ✔✔M423: Distance to arm = 43-92m; M427 = 243-381 (used for higher speed aircraft)
•
Describe the M257 and M278.
- ✔✔M257 (overt illumination): 19deg pitch, 3500m/1800' HAL, 120s burn. M278 (IR
illumination): 26deg pitch, 3000m/2500' HAL, 180s burn, 0.7-1.1 micron (peak @ 0.8). Both =
9.5s to drogue chute, 13.5s to flare, 13-15fps fall.
•
Rule of thumb for correcting wind drift when shooting illum
- ✔✔10kt crosswind = 5deg hdg into wind (300m)
•
How far will a spent illum rocket motor travel?
- ✔✔700-1000m beyond the target.
•
What range of IR energy is produced by the M278 illumination rocket warhead?
- ✔✔0.7-1.1 micron (peak @ 0.8)
•
List the danger close numbers for the M151 2.75" rockets, and M229 2.75" rockets for 300, 800, and
1500m. List danger close numbers for Flechette rockets and APKWS.
- ✔✔M151/M229 = 110, 135, 170m. Flechette = 235m @1000m. APKWS = 105m @ all
distances.
•
List the danger close numbers for 20mm, HF, and JAGM
- ✔✔20mm = 45, 95, 155m @ 300, 800, 1500m. AGM-114 FA/K/L/M/N(4/6)/P(2A) = 115.
AGM-114R = 130. AGM-114R2 = 145.
, •
The Mk-66 series motor produces an average thrust of _____ lbs of thrust for a duration of ____
seconds and weighs approximately _____ lbs.
- ✔✔1415lbs / 1.1s / 13.65lbs
•
The M113A fuze is an acceleration-deceleration (BD) fuze permanently installed in the ______ and the
______ Flechette warheads. Fuze functioning at motor burnout provides Flechette expulsion. The fuze
requires ____ Gs in order to arm and fires when deceleration reaches approximately ____ Gs. Air travel
to arm is approximately ______ meters with the fuze being completely armed in about ____ seconds
- ✔✔WDU-4A/A. My 149 MOD 0. 17.5Gs. 11Gs. 400-600m. 1.2s
•
WDU-4A/A flechette contains ______ x ____ grain Flechettes whereas the Mk 149 MOD 0 dispenses
______ x ____ grain flechettes.
- ✔✔2205x20grain; 1179x60grain
•
What are the allowable PRF Codes for an APKWS?
- ✔✔1111 - 1488
•
What warhead/fuze combinations are allowed for use in APKWS?
- ✔✔M423 / M151; M423 / M282; M423 / M229; WTU-1B
•
What are the times of flight for HF?
- ✔✔40, 32, 25, 19, 15, 10, 7, 4 (8, 7, 6, 5, 4, 3, 2, 1km)
•
What are the TOF and mil settings for APKWS
- ✔✔18/230, 12/190, 8/150, 5/110, 4/90 (5, 4, 3, 2, 1.5km)
•
What are the ceiling considerations for an APKWS? What will an APKWS do if it does not receive
LASER energy after launch?
- ✔✔1000' cloud clearance above launch. Enter attitude hold and land long (up to 9km)
•
The photocathode in NVGs are responsive to what spectrum of energy?
- ✔✔400-950nm. Peak at 600- 900nm.
•
Name the BSBII FOV available in IR mode. Which ones are available in CCDTV?
- ✔✔WFOV, MFOV, NFOV, SNFOV, UNFOV (middle 3 = CCDTV)
