AN-M100A2, AN-M101A2, AN-M102A2T75, T75E2
U.S.N.B.D. - UNITED STATES - BOMBS AND FUZES; PYROTECHNICS
SECTION III - BOMB FUZES

DATA:

  

U.S. ARMY FUZE

 

  

M160, M161, M162

BOMBS USED IN

  

M160

 AN-M30, 100 lb. G.P.
  AN-M57, 250 lb. G.P.
  AN-M88, 220 lb. Frag.

 
  M81, 260 lb. Frag.

MECHANICAL IMPACT

M161

 AN-M43, 500 lb. G.P.

AN-M100A2C
  AN-M64, 500 lb. G.P.

AN-M1001A2C
  AN-M58, 500 lb. S.A.P.  
  AN-M76, 500 lb. Incend.  
  AN-M78, 500 lb. Chem.  
  M32, 600 lb. G.P.  

M162

 AN-M44, 1000 lb. G.P.  
  AN-M65, 1000 lb. G.P.  
  AN-M59, 1000 lb. S.A.P.  
  AN-M79, 1000 lb. Chem.  
  M33, 1100 lb. G.P.  
  AN-M34, 2000 lb. G.P.  
  AN-M66, 2000 lb. G.P.  
  M103, 2000 lb. S.A.P.  
  AN-M56, 4000 lb. L.C.  

FUNCTIONING:

 M14 interchangable primer detonator with delays of .01, .025, .1 or .24 second or nondelay

ARMED CONDITION

 When gear carrier stop protrudes less than 1 inch below vane cup.

FUZES USED WITH

 M163, M164, M165 normally, AN-M103A1, AN-M103, M139, M139A1, AN-M139A1, M140, M140A1, AN-M140A1, Mk 243

ARMING DATA

      
  Vane Revolutions Air Travel (Ft.) Min. Vert. Drop @ 200 mph

M160

 720 1780-1950

650

M161

 720 1910-2230

805

M162

 720 1710-2680

1130

VANE SPAN

 5" (four vanes)

MAX. BODY DIAMETER

 1.5"

OVERALL LENGTH

 M160 9.6"; M161 12.6"; M162 16.6"

MATERIAL

Cadmium plated steel with brass striker body, primer detonator holder and other small parts.

GENERAL:

The M160, M161 and M162 mechanical impact tail fuzes are similar to the AN-M100A2, AN-M101A2, and AN-M102A2 respectively except for the arming stem which has finer threads (28 single threads to the inch against 20 double threads in the AN-M100 series) and a longer engagement with the firing plunger (.75 in. against .50 in.). The M160 series fuzes are distinguished externally from the AN-M100 group by a yellow band 3" long painted around the arming stem case.

The slower arming is desired in order to prevent the premature explosion of bombs within the range of releasing aircraft. This has been caused in the past by bombs bum-ping each other after being dropped in clusters or in salvo at high altitude by very heavy bombers. In addition, the bomb bays of the B-29's are subjected to considerable aur turbulence, distorting the fall of the bombs, thereby increasing the hazard descri-bed above, and dictating the need for slower.

OPERATION:

The operation is similar to the AN-M100 series fuzes except for the incorporation of a longer arming time in the M160 series; see page 151.

REMARKS:

These fuzes are not produced by the Navy.

When these fuzes are used in the M81 250 lb. Frag., the AN-M88 220 lb. Frag., AN-M76 500 lb. Incend., the AN-M78 500 lb. and AN-M79 1000 lb. Chem. and the AN-M56 4000 lb. L.C. bombs, the M14 primer detonator should have non-delay functioning.

The first of the slower arming tail fuzes produced have been designated as the AN-M100A2C series. A limited quantity of AN-M100A2C and AN-M101A2C are being issued. These have the same number of threads per inch as the M160 series, but have the shorter engagement of the AN-M100 series fuzes. The yellow band is painted on as in the M160 series fuzes.

AN-M100A2, AN-M101A2, AN-M102A2T75, T75E2