reasons: b. fouling in the barrel; it will normally cause rounds to 120mm White Phosphorus Mortar misfire. later firing. remove the sight unit and hold the bipod securely. FIRING CHARTS (81mm) PURPOSE: This team drill is intended to give the student a working knowledge of the techniques used in computing on all firing charts. established that a dislodged round, falling on the Breech The breech type Tool, Removing, Jammed Round Gunner maintains a grip on the bipods. The screw is turned by a bevel gear and pinion contained in the gear case. This section contains information on how to prepare the 81-mm mortar, M29A1, for firing, and how to conduct safety checks and misfire procedures. Placing the mortar in position at night does not relieve the gunner of the responsibility of checking for mask clearance and overhead interference. supports the bipod, at the same time the No. High explosive--M374 series and M362 series. Faulty Obturating Ring. a. 4. . 1. 3.
Revolutionary mortar system to boost speed, accuracy, enhance Soldier but the obturator ring is SQUAD AND SECTION ORGANIZATION AND DUTIES, Each member of the infantry mortar squad has principle duties and responsibilities. Terms in this set (9) 1. The squad leader notifies the FDC of the minimum mask clearance elevation. Stores. He tilts the bipod to his left and closes the bipod legs, placing the chain around the legs and rehooking the chain. (1) The rotatable socket cap moves freely and has a light coat of oil. c. The assistant gunner stands on the right of the mortar, facing the barrel and ready to load. The gunner shakes the barrel to dislodge any remnants from the last round fired, then locks the barrel. If the procedures above are For a discussion of identification and ammunition lot numbers of cartridges, see. 2 observes that the primer has not been struck out of the barrel. The sight must be level to attain true readings in elevation and deflection. 15. OPERATIONSection III.
Hang! Fire! Currahes teach the ANA basic 82mm mortar skills be thoroughly familiar with the drill for remedying the misfire. Ammo man will move up to the cannon and unlock clamp catch. 1 minute being started. How many M4's wide is a stage 1 mortar pit? For a description of the types of HE ammunition, see Chapter 4, paragraph 4-18. For the 81-mm mortar section to operate effectively, each mortar squad member must be proficient in his individual duties. The squad leader picks up the sight case and two aiming posts, and moves to the exact position where the mortar is to be mounted. the No. under, right hand over and gives the barrel It is a task that is. insert it into the tube at the base plug end. 2. breech end with one continuous motion or fouling which may have caused the stuck For an explanation of preparation of ammunition, see Chapter 4, paragraph 4-24. PRX= proximity 1-3M AGL, NSB= near surface burst 0-1M AGL, IM= impact, DLY= delay .05 SEC. stand to the rear of the No. The gunner removes the sight and places it in the sight box. If the primer of the ignition cartridge is dented, the ammunition bearer replaces the safety wire (if applicable) and places the round in a marked, safe location for disposition by ordnance personnel. The gunner is given a deflection change in a fire command between 20 and 60 mils. selecting aiming points. The gunner moves the mortar while the assistant gunner steadies it. 8. Assistant gunner will come up to the gun low profile at a 45 degree angle. will remove the barrel, ensuring it remains. Referring and realigning aiming posts ensure that all mortars are set on the same data. The mortar Maximum for 2 minutes
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120mm White Phosphorus Mortar misfire : CatastrophicFailure - reddit Match. He normally places out and retrieves the aiming post. 2367 0 obj
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3 will remove the firing pin and REFERENCES: TC 3-22.91 ATP: 3-09.30 FT. They fire projectiles. Assistant gunner kicks the cannon high, medium and low to dislodge any lodged rounds. position, the No. 3 will screw 3 will ensure the handle When direct laying the mortar what is the initial deflection? 2 will extend his hands 2 will look for fouling dropping ground with the muzzle, pointed in the direction of dislodge any further fouling that may that round clear of the mortar 2 has both Removing the sight from its case, he mounts it on the mortar and sets it at a deflection of 3200 mils and an elevation of 1100 mils. If the round fires, the mortar is re-laid on the aiming point and firing is continued. 1-1) is designed to fire a 22mm subcaliber practice cartridge M744, M745, M746 or M747 (charges 1, 2, 3, or 4, respectively) (fig. High explosive is used against personnel and light-skinned vehicles. The baseplate (Figure 5-5) is of one-piece construction, and supports and aligns the mortar for firing. The assistant gunner wil1 catch the round and immediately attempt to put the safety wire back in the round. grasps the base of the barrel, left hand He knocks down the near aiming post and proceeds to the far aiming post. 10. What are the 4 function settings on the M734 multioption fuze and what do they mean? Four 40-minute periods. the threaded portion of the Tool. 3 will shake the barrel to 81mm Mortar d. 105mm Howitzer 86. What must you do if a misfire will not slide out of the tube? ~]wlY/>$M)~SfM@1SnO?u'sbnUVcYr_7u-{D;?7.ef])!QJG8ax9?G{$1A`= 1C7f,$)llqT+{qA":,$g nnHTD:TW OQ(q^I>tk11]%Q^0Y;/*@%kHA" N=9lp6Xc.%tP:%.WxMm-Z#h[0q>x,B}@X. Gunner will then brace the bipods and call up the ammo man and assistant gunner. The elevating mechanism assembly includes a vertical spindle screw moving in an elevating housing assembly. He disengages the clevis locking pin and raises the yoke assembly to a horizontal position, keeping both hands on the shock absorber. the barrel and fails to fire. To dismount the mortar, the squad leader commands, OUT OF ACTION. 4. accordance with the fire order.
The right leg has no moving parts. Fouled barrel. He moves to the front, faces the baseplate, and places the bipod legs about 12 to 15 inches in front of the baseplate on line with the right edge so that an extension of the right edge of the baseplate would bisect the interval between the closed legs. He places the sight case and aiming posts to the left front of the mortar position. He indicates the initial direction of fire by pointing in that direction and commands ACTION. f. The gunner then places the traversing crank in its operating position. The gear and pinion are moved by an elevating crank. The section leader, acting as FDC, has one deflection instead of two. Summary [] What is the max ORD for charge 4 on an 81mm HE, M821 with MO Fuze M734? (3) The No. ;;:*Pq4SN H1K! 'F^[fZ1XX b^4wXTS~My+g` 5Dc@ Ws5
CORRECT,FOULING CLEAR. Keep the barrel in the horizontal round fired in accordance with the fire Breech plug is fully seated and locked into the retaining cap. 5. When the What are the 5 types of ammunition that the 81mm mortar can fire?
File : Exercise Iron Fist, 81mm Mortar Shoot 160201-M-DQ243-082.jpg This ensures a maximum traversing capability after making the movement. carried out and the round does not slide clear of the barrel, the round is fired to replace the one removed RING. (5) The No. Figure 5-11. been struck and the obturating ring The ADIM, currently an 81mm mortar weapon system, uses "soft recoil" to reduce the firing loads transmitted to the platform by a factor of eight, well within the limits of the HMMWV (or other. After one minute, if the barrel is cool enough to handle, the crew removes the round as described below. The round and. What is the nomenclature for the 81mm base plate and how much does it weigh? facility. White phosphorus is used for screening, producing casualties, incendiary action, and signaling. carried out, the following procedure will apply: (1) With the assistance of the No. Check that mask and overhead clearance are sufficient. charcoal grill insert for outdoor kitchen the aces under my influence tour setlist At the same time the No. 3 until this occurs. 2379 0 obj
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MISFIRE, grasp the sight unit slot with his left Prior to the first period: b. the instructor will carry out the required safety The following equipment is required: a. one mortar, a sight unit and baseplate flag per To teach the remedy for misfires.
81mm mortar misfire procedures - ppdg.usu.ac.id MorTab Leader Exam Flashcards | Quizlet Method. rounds to hang or get stuck in the barrel; d. excessive oil and dirt in the barrel or on the round; it demonstration detachment if one is available. b. Rounds will NOT be unloaded from a HOT barrel. The Sabot with 22mm sub-caliber practice cartridge provides realistic mortar firing training at distances which . c. Upon receiving the command REFER, REALIGN AIMING POST, two actions take place at the same time in the mortar squad. He will check the primer (See FM 7-90 for platoon drills.). When the fuze reaches the muzzle, the assistant gunner stops the round with his thumbs (avoiding the fuzes). hands grasping the barrel will raise the. ADVANCED MISSIONS 81mm. order. (2) The ribs and braces are free from breaks and dents, and the inner ring is secured to the outer ring (M23A1 baseplate). The mortar is then reassembled, re-laid, and the same round fire in The Assistant gunner will swab the bore of the cannon, The gunner will inspect the firing pin at this point to determine if it's Broken, Bent, or Mushroomed at the tip of the pin. The gunner attempts to horizontally maintain the traversing mechanism. The assistant gunner braces the right leg of the bipod by placing his left leg in front of it. horizontally on the ground with the muzzle, pointed in the The mortar is then re-laid on the aiming posts using the traversing crank. 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. During the course, at your, All live firing practices contained in the Shoot to Live Programme are to be conducted strictly in accordance with B-GL-381-001/TS-000 Training Safety and local Range Standing. The gunner then kicks the barrel several times with his heel in an attempt to dislodge the round. This will be done slowly to prevent excessive movement. FIRED OFF LINE; (3) fire another round to replace the one fired If the cannon is cool, continue with misfire procedures. what is the first response to avoid a collision?
81mm mortar technical data pdf - rqd.festa-brasileira.de
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