The body is made of aluminum and brass. I have included my order history, detailed photos, as well as my personal opinion on International Military Antiques, IMA -USA www.ima-usa.com 81mm Display Mortar that they have for sale. They are fuzed with the M524-series, M256-series, or M532.
M821/M889 81mm HE Mortar Cartridges - GlobalSecurity.org They are assembled with either an M524-series, M526-series, or M567 fuze. The Mark 4 and 5 barrels were introduced during World War 2 and have a much increased range. Safety before firing is provided by a safety wire, which must be removed just before firing. a. The assistant gunner exposes 8 inches (200 millimeters) of elevation shaft, leaving the elevation handwheel unfolded. A securing strap is attached to the plain leg for securing the bipod in the folded position. The wrench (P/N 9349539) sets M772 MT and M768 time fuzes. (2) The M524-series fuze has two function settings: superquick/impact (SQ/IMP) and delay. The M1 became the standard American .
81mm ML 3-inch | Weaponsystems.net Mount, M177, in folded position. b. 120MM Mortar System. (3) The M256-series fuze has an SQ/IMP function only. The fuze setter, M25, sets M84-series time fuzes. (2) The ribs and braces have no breaks, cracks, or dents. Figure 4-7. The 81mm mortar is a portable, mobile, medium mortar at the infantry's disposal. Both legs are fitted with a disk-shaped foot with a spike beneath to prevent the mount from slipping. 4-10. The M301A3 cartridge has a cylindrical body that contains an illuminating candle and parachute assembly. 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. Then he relocks the barrel clamp. He ensures that the firing pin recess is facing upwards. When set at delay, the fuze train causes a 0.05-second delay before functioning. This may preclude moving the bipod. Additionally, they carry the 81mm M252 mortar that can only be used in a dismounted capacity. f. Ammunition should be stored under cover. b. The cartridge is painted light green with black markings and one narrow brown band. The M252 81mm medium extended range mortar (see diagram below) is a crew-served, smooth bore, muzzle loaded, high angle of fire weapon system. The M29 would become the standard American mortar in the upcoming Vietnam War. Target terrain, such as ice and dry sand, gives lowest burst heights, whereas water and wet ground give highest burst heights. 81 mm HE mortar projectiles generally contain anywhere between 400 g and 680 g of HE and have a maximum range of approximately 6,500 m. 82 mm HE mortar projectiles generally contain anywhere between 392 g and 680 g of HE and have maximum ranges of between 3,000 - 5,500 m. f. If the above procedure fails to remove the misfire, the barrel must be kept horizontal. The company level vehicles also carry a vehicle-mounted 120mm mortar, which is augmented by the 60mm M224 mortar for dismounted use. (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. This section implements STANAG 2321 and QSTAG 900 (Edition 1). Identification. c. Crest Clearance. It is fitted with a standard pull wire and safety pin that are removed immediately before firing. WP cartridges are stored with the fuze end up. He positions the lower barrel clamp against the lower stop band on the barrel and secures the upper barrel clamp. There must not be a visible gap between the fuze and cartridge body. It is a smooth-bore, muzzle-loading, high-angle-of-fire weapon used for long-range indirect fire support to light infantry, air assault, and airborne units across the entire front of a battalion zone of influence. After the mortar is mounted, the gunner makes a thorough check. Maximum Range (meters): 7,240 (with standard fuze) . 81-mm MORTAR, M252 The 81-mm mortar, M252, delivers timely, accurate fires to meet the . He uses the chain of command to assist him in effecting his command and supervising duties. The gunner places the outer edge of the baseplate against the baseplate stake so that the left edge of the cutaway portion of the baseplate is aligned with the right edge of the stake (Figure 4-7).
Mortar, 81mm M1 - Military Factory Close approach to crests, trees, towers, large buildings, parked aircraft, mechanized equipment, and similar irregularities causes functioning at heights greater than average level. LHMBC. The round is still safe to handle and transport if the safety wire is reinserted. (3) From this train, extend a starting train that will burn against the wind of single increments laid end to end. High explosive--M821, M889, M374-series, and M362. The gunner can depress the barrel, if necessary, to provide easier access to the firing pin.
81mm L16 | Weaponsystems.net In any case, the gunner must ensure that the cartridge does not strike an obstacle. Overhead interference can be branches of trees or roofs of buildings. A spring-loaded locating catch is behind the elevating gear housing, which locates the plain leg in its supporting position for level ground. Trenches are dug to prevent water from flowing under the pile. Those cartridges assembled with the M524 (A1, A2, A3, or A4) fuze are for use by the US Marine Corps and US Navy only. 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. Complete cartridges are always handled with care. The M252 is highly accurate up to ranges of 4500m to 5700m depending on the Bear in mind that these are my personal opinions, experiences, and . The cartridges are painted olive drab with yellow markings. FT 81-AI-3 Firing Tables Mortar, 81mm: M28A1 and M29 Mortar 81mm Self propelled M125A1 and M125 Carrier, 81mm Mortar Tracked XM755 It has a time setting of up to 50 seconds. Figure 4-8. The barrel clamps are then closed.
PDF Introduction to Crew Served Weapons B3m4078 Student Handout a. 9301 Chapek Road., Bldg.1458
b. The contents of ammunition containers are shown by markings. The M375A3 cartridge is ballistically similar to the M374A3 (HE) cartridge. (5) Four inches of elevation shaft are exposed, and the shaft is not bent. Developed by Hirtenberger Defence Systems (HDS), the rugged and reliable M8 comprises an 81 mm long-range weapon available in different barrel lengths, an entire range of ammunition, auxiliary field equipment, sighting systems and a fully digital fire-control system containing all ballistic data. He has the duty of preparing the ammunition and passing it to the assistant gunner. News. 4-12. To make the shift, the gunner places the fingers of his right hand in the muzzle and his left hand on the left leg. He lays for deflection, taking the proper sight picture. The cartridge weighs about 9.12 pounds. Standard A ammunition for the M29A1 mortar is Standard B for the M252 mortar (, Light green Yellow band with red markings.
(e) If the mask is not regular throughout the sector of fire, the gunner determines the minimum mask clearance as described above. Notches in the setter engage ribs in the setting ring of the fuze. There is a selector on the lower shaft for non-delay or delay impact action. Types of rounds, classification, and characteristics for the 81-mm mortar, M252. The terms cannon and barrel are used interchangeably in this chapter. 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. The second page includes a chart with range and deflection (presumably for the same kind of shells), as well as notes which give additional instructions. The vertical cross line of the sight is on the left edge of the aiming point.
Army Publishing Directorate - Firing Tables Figure 4-4. (3) The circlip is correctly located, securing the rotating socket to the baseplate. (3) Markings on rounds.
M1129 Mortar Carrier - Wikipedia ), FIRING TABLES 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 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, HE, M483A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR, CANNON, 155MM, HOWITZER, M185 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, 109A1 HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, 109A1B HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A2 HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3 HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3B AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, 109A4 AND CANNON, 155MM, HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, 109A5 AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, 109A6 AND CANNON, 155MM, HOWITZER, M199 ON HOWITZER, MEDIUM, TOWED, 155MM, M198 AND CANNON, 155MM HOWITZER, M776 ON HOWITZER, MEDIUM, TOWED, 155MM, M777A1 FIRING PROJECTILE, HERA, M549 PROJECTILE, HERA, M549A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES 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; 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, HERA, M549 AND PROJECTILE, HERA, M549A1 (S&I BY PROPONENT, SEE DEAILS, FOOTNOTES. Both the 60mm and 120mm mortar rounds use White Phosphorus. He exposes 1 inch (25 millimeters) of cross-level shaft and folds the handle. After the rounds have been removed, they should always be handled with two hands to prevent accidental dropping. It is fitted with a safety wire and pin that are removed immediately before firing. c. Upon receiving the command REFER, REALIGN AIMING POST, two actions take place at the same time in the mortar squad.
50mm? 60mm? 80mm? A guide on picking the right mortar for you b. 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. He releases the securing strap, loosens the leg-locking handwheel, and lowers the plain leg until the locating catch engages in the recess. 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.
The Marines' Trusty Mortar Is Getting a Major Upgrade - Popular Mechanics
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) . This action breaks an internal sheet pin and internal wire, thereby disabling the proximity function. Fired . The section leader, acting as FDC, has one deflection instead of two or more. Powered by Hugo. e. Dummy. mortar, 81-mm: m29a1 and m29; firing cartridge, he, m374a2 and m374; cartridge, wp, m375a2 and m375 (s&i by prop see details, footnotes) ardec: ft 81-al-4(abr) active: 12/24/1970: firing tables for mortar, 81mm, m29 and m1 firing cartridge, illuminating, m301a3 with fuze, time, m84a1, height of burst, 600 meters (s&i by prop see details . The cartridge must not be fired below charge 3. At the command, MARCH ORDER, the squad places the mortar, equipment, and ammunition in the squad vehicle and trailer. Short cartridges can be expected when firing below charge 4. The pile is covered with a double thickness of tarpaulin. Cartridges assembled with the M532 fuze must be fired above charge 0. [1] [2] Many countries use or used an 81 mm mortar in their armed forces. The mortar is mounted and the sight is installed. Proximity-fuzed short cartridges, which are duds, contain a complete explosive train and impact element. 107 Army Pentagon
Red phosphorus/white phosphorus--M819 and M375-series. The fuze threads and fuze well threads are inspected for damage. The cartridge is painted olive drab with yellow markings and weighs about 9.05 pounds. They should not be approached for 5 minutes or disturbed for at least 30 minutes after firing. The assistant gunner places his right hand palm up (1 inch from the muzzle end) under the BAD and his left hand palm down (1 inch from the muzzle end) on top. Table 4-2. It has two types: type 1 resembles the M734 fuze, and type 2 resembles the M935 fuze. The equipment is placed out the same as for the gunner's examination (Chapter 9). The ignition cartridge strikes the firing pin and detonates, which causes a flash that passes through the radial holes in the shaft. (2) The barrel is locked to the baseplate, and the open end of the socket points in the direction of fire. a. The mortar is within two turns of center of traverse. Army Publishing Directorate
The tabulated data of the 81-mm mortar, M252, are shown in Table 4-1. The settings are obtained from the range tables and are applied using a wrench (number 9239539) or a 1 3/4-turn open-end wrench. 0.30, BROWNING, M1917A1; GUN, MACHINE: CAL. (1) Marking on container. High explosive is used for both fragmentation and blast effect against personnel and light-skinned vehicles. Remaining increments are repositioned towards the rear of the tail fin assembly when firing the cartridge with horseshoe-shaped increments at less than full charge. The M532 fuze is a radio doppler fuze that has a proximity (PROX) or SQ/IMP function. It weighs about 9.05 pounds. . It is constructed from ductile cast iron and contains about 1.5 pounds of cyclonite (RDX)/trinitrotoluene (TNT) composition explosive. The propelling charge consists of an ignition cartridge and removable propellant increments. The M853 cartridge (M252 only) has a cylindrical body that contains an illuminating candle and parachute assembly. Other armies count on 81mm mortar families. a. Cartridges are shipped with a complete propelling charge, an ignition cartridge, and primer.
Fuze, PD, for 81mm mortar rounds, Italy, WWII, inert The squad leader points to the exact spot where the mortar is to be mounted.
81MM SYSTEM | Hirtenberger Defense Systems 81 mm mortar - Wikipedia The fuze has a safety wire that must be removed before firing. It is used for records such as reports on condition, malfunctions, and accidents. d. The first ammunition bearer stands to the right rear of the mortar. MFCS Dismounted. A .mil website belongs to an official government organization in the United States. (2) The fin and fuze assembly must be checked for tightness and damage. The squad leader picks up the sight case and the two aiming posts, and moves to the exact position where the mortar is to be mounted. *FREE* shipping on qualifying offers. He levels all bubbles. c. The first ammunition bearer ensures that each cartridge is clean, the safety pin is present, and the ignition cartridge is in good condition. This ensures a maximum traversing and elevating capability after making the movement. (4) Extra increments are removed if the cartridge is to be fired with less than full charge.
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