81mm mortar range table

Secure .mil websites use HTTPS Each cartridge weighs about 10 pounds and is provided with the M223 propelling charge, consisting of four horseshoe-shaped increments fitted around the tail. The vertical cross line of the sight is on the left edge of the aiming point. The powder increments, mainly, should not be exposed to direct sunlight. M252 81mm Mortars The M252 81mm medium extended range mortar (see diagram below) is a crew-served, smooth bore, muzzle loaded, high angle of fire weapon system. *FREE* shipping on qualifying offers. c. The assistant gunner stands to the right of the mortar, facing the barrel and ready to load. The assistant gunner checks the bipod and ensures that--. a. Point-Detonating. Proximity fuzes withstand normal handling without danger of detonation or damage when in their original packing containers or when assembled to projectiles in their packing containers. Short cartridges can be expected when firing below charge 4. They are painted light green with red markings and one narrow yellow band. It has a time setting of up to 50 seconds. a. Trenches are dug to prevent water from flowing under the pile. b. (6) The primer cartridge is checked for damage or dampness. The tabulated data of the 81-mm mortar, M252, are shown in Table 4-1. f. Ammunition should be stored under cover. The safety pull wire is removed just before inserting the cartridge into the mortar. Theme by TechDoc. The round has a burst height of 600 meters and provides illumination for about 60 seconds for an area of about 1,200 meters. Cartridges assembled with the M524 (A1, A2, A3, or A4) fuze are for use by the US Marine Corps and US Navy only. Mount, M177, in folded position. The barrel is then rotated a quarter turn to unlock it from the socket, and it is placed in an area designated by the squad leader. (c) The gunner determines mask and overhead clearance by sighting along the barrel with his eye near the breech plug. The cartridges are painted olive drab with yellow markings. The cartridges are returned to their original containers. This section discusses the characteristics and nomenclature of each component (Figure 4-2). The fuze is not intended to function at charge 0. REFERRING OF THE SIGHT AND REALIGNMENT OF AIMING POSTS USING M64 SIGHT. (2) The breech plug is screwed tightly to the barrel. The second ammunition bearer retrieves the aiming posts. Target terrain, such as ice and dry sand, gives lowest burst heights, whereas water and wet ground give highest burst heights. Proximity (VT). The gunner moves the mortar as the assistant gunner steadies it. Mortars are indirect-fire weapon systems. When the approximate alignment is completed, the gunner signals the assistant gunner to lower the bipod by pushing down on the mortar. The M1 was a derivative of the French mle 27/31 system (itself an improved form of the Stokes Trench Mortar of World War 1 fame) and slightly altered to suit American needs. The fuze contains a delayed arming feature that ensures the fuze remains unarmed and detonator safe for a minimum of 1.25 seconds of flight. The propellant increments are ignited, which produce rapidly expanding gases that force the cartridge from the barrel. Close approach to crests, trees, towers, large buildings, parked aircraft, mechanized equipment, and similar irregularities causes functioning at heights greater than average level. .50: AP, M2 AND CARTRIDGE, CAL. 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 HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3B HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A4 AND CANNON, 155MM HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A5, M109A6 AND M109A7 AND CANNON, 155MM HOWITZER, M284A2 CHROME ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A6 AND M109A7 AND CANNON, 155MM HOWITZER, M199 ON HOWITZER, MEDIUM, TOWED, 155MM, M198 AND CANNON, 155MM HOWITZER, M776 ON HOWITZER, MEDIUM, TOWED, 155MM, M777, M777A1 AND M777A2 AND CANNON, 155MM HOWITZER, M776 CHROME ON HOWITZER, MEDIUM, TOWED, 155MM, M777A2 FIRING PROJECTILE, HE, M795 PROJECTILE, HE, M795 IM PROJECTILE, HE, M1122 PROJECTILE, IR ILLUMINATING, M1123 PROJECTILE, ILLUMINATING, M1124 INCLUDES FIRING TABLES FOR PROPELLANTS: M119A2 (CHARGE 7R), M203A1 (CHARGE 8S), AND MODULAR ARTILLERY CHARGE SYSTEM (MACS) PROPELLANTS: M231 (CHARGES 1L AND 2L), M232 AND M232A1 (CHARGES 3H, 4H AND 5H) (S&I BY PROP SEE DETAILS, FOOTNOTES) . The barrel clamps are then closed. The gunner is given a deflection change between 5 and 25 mils, either increasing or decreasing from the last stated deflection, and the command to refer and realign aiming posts. It is light enough to be portable when broken down into. The propelling charges are assembled around the fin assembly shaft. Tabular Firing Tables TFT ORDER FORM 1.Select "Mortar" 2.Select which mortar caliber 3.Select mortar system nomenclature 4.Select which TFTs to order 5.Put in quantity and click "Add TFTs" 6.Click "Next" TFT JUSTIFICATION 1.Put in TFT Ordering Justification 2.Click "Next" SHIPPING INFORMATION 1.Fill out all required fields [1] [2] Many countries use or used an 81 mm mortar in their armed forces. The cartridge uses the M218 propelling charge, which consists of four horseshoe-shaped increments fitted around the tail. If the situation allows for a longer waiting period, the dud can be considered safe for handling after 40 hours. high-explosive bomb at a range of about three miles. The gunner is given a deflection and elevation change in a fire command causing the gunner to shift the mortar between 200 and 300 mils for deflection and between 100 and 200 for elevation. It is set using the bladed end of the M18 fuze wrench. He knocks down the near aiming post and proceeds to the far aiming post. Disposal Precautions. .50: BROWNING, M2 (HEAVY BARREL, TURRET TYPE) ON MOUNT, MACHINE GUN, TRAILER MTD: MULTIPLE CAL. a. (5) With the exception of a few unused increments (within the same ammunition lot number) as replacements for defective increments, excess powder should be removed from the mortar position. The gunner unlocks the barrel clamp and rotates the barrel, unlocking the breech plug from the rotating socket of the baseplate. (1) Mask clearance and overhead clearance are sufficient. It is painted white with black markings. d. Multioption. They should not be approached for 5 minutes or disturbed for at least 30 minutes after firing. The sight bracket is attached to the buffer carrier, which is fitted to the traversing screw assembly. . There is a selector on the lower shaft for non-delay or delay impact action. e. The M362A1 and M362 HE cartridges are of steel forge construction and contain about 2.10 pounds of composition B explosive. The types of fuzes described in this paragraph are point detonating, proximity, mechanical time, multioption, and dummy. a. a. (3) The M256-series fuze has an SQ/IMP function only. News. M120/M121 120 mm Mortar. It is especially useful if the baseplate sinks deep into the ground during prolonged firing. It uses the M205 propelling charge, consisting of four horseshoe-shaped increments fitted around the tail. The gunner can depress the barrel, if necessary, to provide easier access to the firing pin. e. The assistant gunner passes the round to the first ammunition bearer who inspects it for the cause of the misfire. The M375A3 cartridge is ballistically similar to the M374A3 (HE) cartridge. M224A1 60 MM LWCMS Mortar The 60mm mortar, M224A1 Lightweight Company Mortar System (LWCMS), is a smoothbore, muzzle loaded, high angle of fire weapon. Features: The M252 81mm Medium Extended Range Mortar is a crew-served, medium weight mortar which is highly accurate and provides for a greater range (4,500 meters to 5,650 meters) and lethality than the previous 81mm mortar. Correctly applying and performing these duties enables the mortar section to perform as an effective fighting team. a. He places firing data on the sight and lays the mortar for deflection and elevation. The BAD is removed only by qualified maintenance personnel. h. Where the ground is uneven and there is no level surface for the bipod, the gunner can adjust the plain leg. The mortar also offered the promised increase in range as well, allowing fire teams to engage the enemy at distance. The term "indirect fire" means firing at an enemy without having a. c. The gunner grasps both ends of the traverse screw assembly and supports the mortar during the subsequent drill. The M889 HE cartridge (M252 onlyXUS Marine Corps) is of the same construction as the M821 cartridge in every detail except the fuze, which is the M935. c. The M375A2, M375A1, and M375 cartridges may also be used. A proximity fuze is an electronic device that detonates a projectile by means of radio waves sent out from a small radio set in the nose of the projectile. Red phosphorus rounds can be fired from the M29/M29A1 at a reduced charge (maximum charge = charge 2). The gunner is given an administrative command to lay the mortar on a deflection of 2860 or 2740 mils. The table on the right describes the three most common setups. (3) The circlip is correctly located, securing the rotating socket to the baseplate. (The handle of the wrench is turned counterclockwise.) These are NDI items . (703) 614-3727, Office of the Chief Information Officer In charge was the platoon commander - normally a lieutenant. If the fuze does not function as set, it automatically functions at the next lower setting. Upon completion of any bipod movement on the barrel, the gunner ensures that the firing pin recess is facing upward. This may preclude moving the bipod. The 81-mm mortar, M252, is a smooth-bore, muzzle-loaded, high-angle-of-fire weapon. From introduction up to halfway World War 2 the ML 3-inch had a poor range of up to 1.45 km. b. This action breaks an internal sheet pin and internal wire, thereby disabling the proximity function. Agreed that mortars should generally be used close to the frontline. (2) The barrel is locked to the baseplate, and the open end of the socket points in the direction of fire. Swifty 3 from scratch; Swifty 3 split-repo setup; Swifty Troubleshooting; Mods. The upper clamp is fitted with a locking arrangement that consists of a curved handle and a spring-loaded locking rod, which is ball-shaped at its lower end. The first table is a chart that shows range and elevation for firing particular mortar shells. He is also the squad driver. It is fitted with a safety wire and pin that are removed immediately before firing. The cartridge can be fitted with the M524-series, M526-series, M567, or M532 fuzes. When the gunner is satisfied with his sight picture he announces, "Up.". Normally, it can be moved by hand, although this may be difficult to do if the mortar is moved through a large arc. He stands to the rear of the baseplate and supports the barrel until the bipod is fitted. Safety before firing is provided by a safety wire, which must be removed just before firing. The assistant gunner attempts to maintain the traversing mechanism on a horizontal plane. The cartridge is painted light green and has red markings and one narrow yellow band. It is used for records such as reports on condition, malfunctions, and accidents. The equipment is placed out the same as for the gunner's examination (Chapter 9). He levels all bubbles. a. Cartridges are shipped with a complete propelling charge, an ignition cartridge, and primer. c. The assistant gunner lifts the bipod and stands it on its elevating leg so that the elevating handwheel is to the rear and the plain leg is to the front. M3A1 Baseplate CANNON . It has a time setting of up to 25 seconds. This is the inert PD fuze type "IR-81" used by the Italians for their 81mm mortar rounds during WWII. a. MFCS Mounted. The principal factors affecting height of burst are the angle of approach to the target and the reflectivity of the target terrain. For those of you in the market for a Dummy/Display 81mm mortar, I hope this article can answer a few of your questions before you order. The squad leader indicates the direction of fire when mounting. 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. Ammunition is made and packed to withstand all conditions ordinarily encountered in the field. The components of the mortar consist of a canon, sight, mount, and baseplate. Fired . The fuze should already be fitted to the cartridge. During training, the gunner may use the driving stake from the aiming post case. d. The M374A2, M374A1, and M374 HE cartridges are painted olive drab with yellow markings and are constructed from pearlitic malleable cast iron. Baseplate placed against baseplate stake. Both legs are fitted with a disk-shaped foot with a spike beneath to prevent the mount from slipping. The mortar is then re-laid on the aiming posts using the traversing crank. An M18 fuze wrench is used to change settings. c. Authorized Cartridges. Range Minimum to maximum 83 to 5,608 meters Rate of Fire . The fuze consists of a brass head, body assembly, and expelling charge. Fuzes are not disassembled. c. After the gunner has announced, "Up," the squad leader should check the mortar to determine if the exercise was performed correctly. The cartridge must not be fired below charge 3. Figure 4-4. The mortar is mounted and the sight is installed. Cartridges assembled with the M524 (A1, A2, A3, or A4) fuze are for use by the U.S. Marine Corps and U.S. Navy only. Its range and explosive power is greater than the M224, yet it is still light enough to be man . He maintains the ammunition for firing and provides local security for the mortar position. It contains white phosphorus that produces white smoke on contact with air. 120MM Mortar System. General Dynamics Ordnance and Tactical Systems' 81mm Roll Controlled Guided Mortar (RCGM) provides an affordable, flexible solution to meet that need. The body is made of aluminum and brass. e. Care, Handling, and Preservation. It uses the M772 mechanical time fuze and weighs about 10.6 pounds. General Dynamics Ordnance and Tactical Systems is the leading manufacturer of propellants for 60mm, 81mm and 120mm Mortar Systems. The components of the mortar consist of a cannon, mount, and baseplate. The air burst over average types of soil ranges from 1 to 6 meters, depending on the angle of approach. The contents of ammunition containers are shown by markings. e. The squad leader picks up the aiming posts and sight. b. Ammunition Lot Number. At the command, MARCH ORDER, the squad places the mortar, equipment, and ammunition in the squad vehicle and trailer. 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. An ammunition lot number is assigned to each ammunition lot, which is marked on each cartridge and packing container. At extreme temperatures (below -40 degrees Fahrenheit and above 125 degrees Fahrenheit), it is not unusual to experience an increase in malfunctions proportionate to the severity of conditions. Both the M90 and M90A1 propellants are in nine wax-tested, cotton cloth, bag increments assembled to the tail unit. He uses the chain of command to assist him in effecting his command and supervising duties. . (4) Extra increments are removed if the cartridge is to be fired with less than full charge. (5) Four inches of elevation shaft are exposed, and the shaft is not bent. As soon as the sight data are announced, the gunner places it on the sight, lays the mortar for elevation, and traverses onto the aiming post by turning the traversing handwheel and adjusting nut in the same direction. Correct way to open an ammunition box. As a longstanding partner of armed forces around the globe, Rheinmetall supplies a wide array of mortar systems and ammunition. He positions the lower barrel clamp against the lower stop band on the barrel and secures the upper barrel clamp. c. Crest Clearance. As soon as the sight data are announced, the gunner places it on the sight. The adjustment ring has six raised ribs for use in conjunction with fuze setter, M25, and a setting indicator rib (marked SET) about half the height and width of the other six ribs. How the RCGM works: Target coordinates are programed into the RCGM using a portable GPS setter.

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