81mm mortar range table
This is the inert PD fuze type "IR-81" used by the Italians for their 81mm mortar rounds during WWII. Home; Swifty. The contents of ammunition containers are shown by markings. If required, the gunner/assistant gunner lowers the barrel so that the breech plug engages with the open end of the socket, and he uses the barrel as a lever to move the socket. e. The gunner centers the elevation bubble. The types of fuzes described in this paragraph are point detonating, proximity, mechanical time, multioption, and dummy. Safety before firing is provided by a safety wire, which must be removed just before firing. The wrench (P/N 9349539) sets M772 MT and M768 time fuzes. With the mortar mounted and the sight installed, the gunner lays the sight on the two aiming posts (placed out 50 and 100 meters from the mortar) on a referred deflection of 2800 mils and an elevation of 1100 mils. After the 30-minute waiting period, the dud is still dangerous but can be approached and removed carefully or destroyed in place by qualified disposal personnel. . This may preclude moving the bipod. He places the sight case and aiming posts to the left front of the mortar position. All rounds are colored according to their type. d. The first ammunition bearer stands to the right rear of the mortar. [1] [2] Many countries use or used an 81 mm mortar in their armed forces. He places his thumbs alongside the forefingers, being careful to keep both hands away from the muzzle. g. The barrel clamps can be moved along the barrel to counter large changes in elevation. Do not burn increments in piles but spread them in a train 1 to 2 inches deep, 4 to 6 inches wide, and as long as necessary. It contains white phosphorus that produces white smoke on contact with air. *FREE* shipping on qualifying offers. b. The enemy will use them. Correctly applying and performing these duties enables the mortar section to perform as an effective fighting team. The mortar is within two turns of center of traverse. a. The 81mm weapons platoon consisted of the headquarters platoon and four mortar squads. The barrel clamp, which consists of an upper and lower clamp, is situated at the top. Red phosphorus rounds can be fired from the M29/M29A1 at a reduced charge (maximum charge = charge 2). 60mm, 81mm, and 120mmMortar Increments. CANNON . The sight is laid on two aiming posts (placed out 50 and 100 meters from the mortar) on a referred deflection of 2800 mils and an elevation of 1100 mils. d. The gunner rough levels the cross-level bubble by making the bubble bounce from one side to the other. Types of rounds, classification, and characteristics for the 81-mm mortar, M29A1 (Standard B for the 81-mm mortar, M252). The cartridge weighs about 9.4 pounds. Cartridges assembled with the M532 fuze must be fired above charge 0. .50: BROWNING, M2 (HEAVY BARREL, FLEXIBLE) ON MOUNT, MACHINE GUN, TRIPOD MTD, CAL. If the fuze does not function as set, it automatically functions at the next lower setting. (1) The barrel is clean and free from grease and oil both inside and out. The M374 cartridge is fitted with the M90 propelling charge. 0.30, BROWNING, M1917A1; GUN, MACHINE: CAL. The 0-second boss is wider and differs in shape from the other body bosses; the safe setting position is indicated by the letter "S" on the fuze body. This ensures a maximum traversing and elevating capability after making the movement. The round has a burst height of 600 meters and provides illumination for about 60 seconds for an area of about 1,200 meters. Red phosphorus/white phosphorus--M819 and M375-series. 120mm IHE grenade DM91. The following safety checks must be enforced before firing the mortar. The equipment is placed out the same as for the gunner's examination (Chapter 9). No tools are needed to set the fuze, and the setting can be changed several times without damaging the fuze. Fort Belvoir, VA 22060 If the mortar section is to operate quickly and effectively in accomplishing its mission, mortar squad members must be proficient in individually assigned duties. These cartridges are used first in subsequent firing so that once-opened stocks can be kept to a minimum. The striker has been modified to be able to use German and Italian patterns of 81mm mortar . The fuze arms and functions normally when fired at any angle of elevation between 0800 and 1406 mils at charges 1 through 9. Training practice--M879, M880, M68, and sabot. The components of the mortar consist of a cannon, mount, and baseplate. He exposes 1 inch (25 millimeters) of cross-level shaft and folds the handle. Bear in mind that these are my personal opinions, experiences, and . c. The assistant gunner moves into position to the front of the bipod on his right knee and grasps the bipod legs (palms up), lifting until they clear the ground enough to permit lateral movement. b. One-quarter turn on the adjusting nut equals one turn of the traversing handwheel. After the barrel cools, the gunner removes the sight and firing pin. It has four function settings: PRX (proximity) causes the cartridge to explode between 3 and 13 feet above the ground; NSB (near-surface burst) causes the cartridge to explode up to 3 feet above the ground; IM (impact) causes the cartridge to explode on contact; and DLY (delay) incorporates a 0.05-second delay in the fuze train before exploding the cartridge. Figure 4-8. Excess increments should not accumulate near the mortar positions but are removed to a designated place of burning and destroyed. 0.50, BROWNING, M2; FIRING CARTRIDGE, ARMOR-PIERCING-INCENDIARY, CAL. During training, the gunner may use the driving stake from the aiming post case. News. The ignition cartridge strikes the firing pin and detonates, which causes a flash that passes through the radial holes in the shaft. The 81mm mortar is a portable, mobile, medium mortar at the infantry's disposal. It can be set from 3 to 55 seconds at half-second intervals. A securing strap is attached to the plain leg for securing the bipod in the folded position. a. The fuze consists of a brass head, body assembly, and expelling charge. A lock ( The cartridge uses the M218 propelling charge, which consists of four horseshoe-shaped increments fitted around the tail. If he is not within 20 mils, the gunner and assistant gunner must make another large shift before moving on. It uses the M219 propelling charge and weighs about 9.1 pounds. Maximum Range (meters): 7,240 (with standard fuze) . Target terrain, such as ice and dry sand, gives lowest burst heights, whereas water and wet ground give highest burst heights. 81MM M252A1. M252A1 81mm Mortar: Maximum Range (meters): 5,935; Ammunition: War reserve HE (M821A3), red phosphorus smoke (M819), visible light illumination (M853A1), infrared illumination (M816), war reserve and training HE (M889A4), and FRP . It is painted white with black markings. A .mil website belongs to an official government organization in the United States. This may cause the firing pin to ignite the charges if the cartridge is dropped on the fin end (. It uses the M772 mechanical time fuze and weighs about 10.6 pounds. SQUAD AND SECTION ORGANIZATION AND DUTIES, Each member of the infantry mortar squad has principle duties and responsibilities. Baseplate placed against baseplate stake. FIRING TABLE FOR CANNON, 155MM HOWITZER, M185 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A1; HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A1B; HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A2; HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3; AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3B; AND CANNON, 155MM HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A5 AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A6 AND CANNON, 155MM HOWITZER, M199 ON HOWITZER, MEDIUM, TOWED, 155MM, M198 FIRING PROJECTILE, GUIDED, M712 (COPPERHEAD) WITH SHAPED TRAJECTORIES (S&I BY PROP SEE DETAILS, FOOTNOTES), PROVISIONAL AIMING DATA FOR CANNON, 155MM, HOWITZER, M185 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, 109A1 HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, 109A1B HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A2 AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3 HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3B AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A4 AND CANNON, 155MM HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A5 AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A6 AND CANNON, 155MM HOWITZER, M199 ON HOWITZER, MEDIUM, TOWED, 155MM, M198 AND CANNON, 155MM HOWITZER, M776 ON HOWITZER, MEDIUM, TOWED, 155MM, M777A1 FIRING PROJECTILE, BASE-BURN, M864 AND M864A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), PRELIMINARY AIMING DATA FOR CANNON, 155MM HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A6 AND CANNON, 155MM HOWITZER, M776 ON HOWITZER, MEDIUM, TOWED, 155MM, M777A2 FIRING PROJECTILE, HE, XM982 (S&I BY PROP SEE DETAILS, FOOTNOTES), PROVISIONAL AIMING DATA FOR CANNON, 155MM HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A6 AND CANNON, 155MM HOWITZER, M776 ON HOWITZER, MEDIUM, TOWED, 155MM, M777A2 FIRING PROJECTILE, HE, XM982 (S&I BY PROP SEE DETAILS, FOOTNOTES), PROVISIONAL AIMING DATA FOR CANNON, 155MM HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A6 AND CANNON, 155MM HOWITZER, M776 ON HOWITZER, MEDIUM, TOWED, 155MM, M777A2 FIRING PROJECTILE, HE, M982 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 165-MM GUN, M135 ON COMBAT ENGINEER VEHICLE, FULL TRACKED, M728; FIRING CARTRIDGE, 165-MM, HEP, M123A1 AND 165-MM, TP-T, XM623 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 175-MM GUN, M113 AND M113A1 ON GUN, FIELD ARTILLERY, SELF-PROPELLED: 175-MM, M107; FIRING PROJECTILE, HE, M437A2 AND M437A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), RAPID FIRE TABLES FOR CALCULATION OF THE EXECUTIVE OFFICERS (XOS) MINIMUM QUADRANT ELEVATION WITH CANNON, 105MM HOWITZER, M20A1 ON HOWITZER, LIGHT, TOWED, 105MM, M119A1; HOWITZER, LIGHT, TOWED, 105MM, M119A2; HOWITZER, LIGHT, TOWED, 105MM, M119A3 FIRING WITH PROPELLING CHARGES, M67 AND M200 (S&I BY PROP SEE DETAILS, FOOTNOTES), RAPID FIRE TABLES FOR CALCULATION OF THE EXECUTIVE OFFICER S (XO S) MINIMUM QUADRANT ELEVATION WITH CANNON, 155MM HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A5/A6 AND CANNON, 155MM HOWITZER, M199 ON HOWITZER, MEDIUM, TOWED, 155MM, M198 AND CANNON, 155MM HOWITZER, M776 ON HOWITZER, MEDIUM, TOWED, 155MM, M777A1/A2 FIRING WITH PROPELLING CHARGES, M231, M232, AND M232A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), RAPID FIRE TABLES FOR CALCULATION OF THE EXECUTIVE OFFICERS (XOS) MINIMUM QUADRANT ELEVATION WITH CANNON, 155MM HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A5; HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A6; AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A7, AND CANNON, 155MM HOWITZER, M776 ON HOWITZER, MEDIUM, TOWED, 155MM, M777A1 AND HOWITZER, MEDIUM, TOWED, 155MM, M777A2 FIRING WITH PROPELLING CHARGES, M231, M232, AND M232A1 (S&I BY PROPONENT, SEE DETAILS, FOOTNOTES), ADDENDUM TO FTR LANCE-B-1 FOR WARHEAD SECTION, GUIDED MISSILE, HE: M251 (U) (S&I BY PROP SEE DETAILS, FOOTNOTES), Search Army publications and forms by Number, Title, or Record Detail. (4) The leg-locking handwheel is hand tight. The cartridge is painted light green with black markings and one narrow brown band. The cartridge is painted light green and has red markings and one narrow yellow band. e. The assistant gunner passes the round to the first ammunition bearer who inspects it for the cause of the misfire. This round must be stored in a vertical position. They should not be approached for 5 minutes or disturbed for at least 30 minutes after firing. He knocks down the near aiming post and proceeds to the far aiming post. He levels all bubbles. At the same time, the first ammunition bearer moves out on the double to realign the aiming posts. f. The open end of the socket must continue to point in the direction of fire. If the round does not fire, the gunner tests the barrel for heat. The fuze is not intended to function at charge 0. The BAD is removed only by qualified maintenance personnel. It uses the M205 propelling charge, consisting of four horseshoe-shaped increments fitted around the tail. Red phosphorus cartridges (M252 only) are stored the same as HE cartridges. To convert the fuze from PROX to SQ/IMP, the top of the fuze must be rotated 120 degrees (one-third turn) in either direction. The floating firing pin located within the primer has approximately 1/16 of an inch to move around.
