81mm mortar range table

81mm mortar range table

The explosive elements in primers and fuzes are sensitive to shock and high temperature. b. c. The first ammunition bearer checks the barrel and ensures that--. If the mortar section is to operate quickly and effectively in accomplishing its mission, mortar squad members must be proficient in individually assigned duties. The M1 became the standard American . LARGE DEFLECTION AND ELEVATION CHANGES. The M853 and M301A3 illuminating ammunition are described herein. The assistant gunner attempts to maintain the traversing mechanism on a horizontal plane. The cannon has a crew-removable breech plug and firing pin. The components of the mortar consist of a cannon, mount, and baseplate. e. The M362A1 and M362 HE cartridges are of steel forge construction and contain about 2.10 pounds of composition B explosive. Tabulated data. It is used for records such as reports on condition, malfunctions, and accidents. Placing the mortar in position at night does not relieve the gunner of the responsibility of checking for mask clearance and overhead interference. Proximity-fuzed short cartridges, which are duds, contain a complete explosive train and impact element. a. Before-firing checks include the following: (1) Ammunition should be free of moisture, rust, and dirt. 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. Short cartridges can be expected when firing below charge 4. Those cartridges assembled with the M524 (A1, A2, A3, or A4) fuze are for use by the US Marine Corps and US Navy only. 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. The cartridge is painted olive drab with yellow markings and weighs about 9.05 pounds. They are painted light green with red markings and one narrow yellow band. a. 4-11. b. REFER DEFLECTION TWO EIGHT SEVEN FIVE (2875), REALIGN AIMING POSTS. To dismount the mortar, the squad leader commands, OUT OF ACTION. Following the arm-and-hand signals of the gunner (who is looking through the sight unit), he moves the far aiming post so that the gunner obtains an aligned sight picture. e. The gunner centers the elevation bubble. The mortar is then re-laid on the aiming posts using the traversing crank. This is the inert PD fuze type "IR-81" used by the Italians for their 81mm mortar rounds during WWII. HE ammunition is used against personnel and materiel. The squad leader notifies the FDC of the minimum mask clearance elevation. The round is still safe to handle and transport if the safety wire is reinserted. Fired . The fuze is screwed into the cartridge body, and it is seated and secured using an M18 wrench. 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. The M821/M889 are 81mm HE Mortar Cartridges. The BAD is removed only by qualified maintenance personnel. Theme by TechDoc. The safety pull wire is removed just before inserting the cartridge into the mortar. Training practice is used only for training. Burst Height. Long Range PGK. 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. It uses the M219 propelling charge and weighs about 9.1 pounds. The second ammunition bearer retrieves the aiming posts. Section I. The striker has been modified to be able to use German and Italian patterns of 81mm mortar . 81mm 120mm 60mm . It provides illumination for about 60 seconds with 600,000 candlepower illumination. He positions the lower barrel clamp against the lower stop band on the barrel and secures the upper barrel clamp. The first ammunition bearer shakes the barrel to dislodge any remnants from the last round fired, and he lowers the barrel into the rotating socket of the baseplate. 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. In addition to loading, he swabs the bore after 10 rounds have been fired or after each fire mission. (5) Four inches of elevation shaft are exposed, and the shaft is not bent. News. The M252 system . 9301 Chapek Road., Bldg.1458 This action breaks an internal sheet pin and internal wire, thereby disabling the proximity function. The M252 81mm medium extended range mortar (see diagram below) is a crew-served, smooth bore, muzzle loaded, high angle of fire weapon system. Illuminating is used for battlefield illumination and signaling. d. Multioption. He places his thumbs alongside the forefingers, being careful to keep both hands away from the muzzle. c. Mechanical Time. a. Point-Detonating. He exposes 4 inches (100 millimeters) of elevation shaft and folds the handle. b. In the U.S. Army and U.S. Marine Corps, it is normally deployed in the mortar platoon of an infantry battalion. The mortar is mounted and the sight is installed. Ammunition is made and packed to withstand all conditions ordinarily encountered in the field. How the RCGM works: Target coordinates are programed into the RCGM using a portable GPS setter. (4) Extra increments are removed if the cartridge is to be fired with less than full charge. The first ammunition bearer puts both hands on the cooling fins under the barrel and slowly lifts the barrel until it is horizontal. M3A1 Baseplate He levels all bubbles. The gunner should expose 6 inches (150 millimeters) of elevation shaft and center the buffer carrier. The propellant increments are ignited, which produce rapidly expanding gases that force the cartridge from the barrel. A lock ( (3) The circlip is correctly located, securing the rotating socket to the baseplate. The barrel clamp, which consists of an upper and lower clamp, is situated at the top. 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. Light tree foliage and light vegetation affect the height of burst only slightly, but dense tree foliage and dense vegetation increase the height of burst. An official website of the United States government. The ignition cartridge strikes the firing pin and detonates, which causes a flash that passes through the radial holes in the shaft. (4) The leg-locking handwheel is hand tight. The cartridge uses the M205 propelling charge and is assembled with the M567 or M524-series fuze. The American M1 81mm Mortar, like the upcoming M2 60mm Mortar, was based on a French design by Edgar William Brandt (1880-1960). To set for delay, the selector slot should be rotated clockwise until it is aligned with the "D" mark on the ogive. (3) The M256-series fuze has an SQ/IMP function only. The following safety checks must be enforced before firing the mortar. If the primer is not dented, the round may be used again. It can be set from 3 to 55 seconds at half-second intervals. CANNON . e. The assistant gunner passes the round to the first ammunition bearer who inspects it for the cause of the misfire. However, at temperatures above 32 degrees Fahrenheit and at angles greater than 1068 mils, the flight time is sufficient to permit arming. The 60mm mortar section is located in the weapons platoon of the rifle company, is armed with three 60mm mortars, and is When fired, the cartridge carries the ignition cartridge with it, leaving the mortar ready for the next cartridge. 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 traversing screw assembly is fitted to the clamp assembly, which is pivoted in the center on an arm attached to the elevating leg. Upon completion of any bipod movement on the barrel, the gunner ensures that the firing pin recess is facing upward. The mortar is within two turns of center of traverse. This ensures that the mortar does not fire should the round slip down the barrel during the subsequent drills. I say 120s are bad because they suffer from terrible dispersion even when not shooting at 6km. The mount consists of elevating and traversing mechanisms and a bipod (Figure 4-4). 0.50, M8 (REPRINTED W/BASIC INCL C1-2) (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MACHINE GUN, CALIBER .50: BROWNING, M2 (HEAVY BARREL, TURRET TYPE) ON MOUNT, MACHINE GUN, TRAILER MOUNTED: MULTIPLE CALIBER .50 MACHINE GUN, M55 FIRING CARTRIDGE, CALIBER .50: API, M8 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MACHINE GUN, CALIBER .50: FICED, M85 TANK, COMBAT, FULL TRACKED: 105MM GUN, M60 SERIES FIRING CARTRIDGE, CALIBER .50: API, M8 CARTRIDGE, CALIBER .50: API-T M20 CARTRIDGE, CALIBER .50: BALL, M33 CARTRIDGE, CALIBER .50: TRACER, M17 (S&I BY PROP SEE DETAILS, FOOTNOTES), MACHINE GUN, CAL. The following are authorized (Standard B) cartridges for the 81-mm mortar, M252: Each cartridge has fins around the tail to stabilize it in flight and to cause it to strike fuze-end first. In charge was the platoon commander - normally a lieutenant. He places the sight case and aiming posts to the left front of the mortar position. a. 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 .50 MACHINE GUN, M55 AND MACHINE GUN, CAL. He tightens the leg-locking handwheel (ensuring the teeth are correctly meshed) and fastens the securing strap over the arm and around the buffers. Share sensitive information only on official, secure websites. M64A1 Sightunit. When set at SQ, the fuze functions on point impact or graze contact. Red phosphorus/white phosphorus is used for screening, producing casualties, creating incendiary effects, and signaling. It is set using the bladed end of the M18 fuze wrench. b. He must not stand directly behind the mortar. c. Upon receiving the command REFER, REALIGN AIMING POST, two actions take place at the same time in the mortar squad. Red phosphorus/white phosphorus--M819 and M375-series. (2) The breech plug is screwed tightly to the barrel. (See FM 7-90 for a discussion of the duties of the platoon headquarters.).

Walworth Valves Greensburg Pa, Delaware State University Post Office, Articles OTHER