TM E9-369A German 88 mm Antiaircraft Gun Materiel

a. This manual is published for the information and guidance of the using arms and services. b. There is included as much technical information required for identification, use, and care of the German 88-mm antiaircraft gun as can be ascertained from printed matter and the materiel on hand. Corrections and additions to this manual will be published as the information becomes available. c. In all cases where the nature of the repair, modification, or adjustment is beyond the scope or facilities of the unit or beyond the scope of this manual, the responsible ordnance service should be informed so hat proper instructions may be issued. a. The mount is a circular pedestal antiaircraft type suspended from two bogies when in traveling position. The mount is equipped with a data transmission indicator for antiaircraft fire. There are also provisions for installing a direct laying sight for antitank fire and a dial sight for indirect fire. A hand driven fuze setter is fitted to the left side of the top carriage. The traversing and elevating mechanism data transmission indicators and direct laying sight are on the right side. h. Normally, the bottom carriage is in contact with the ground during firing and is stabilized by outriggers. There are four leveling jacks, one at each extremity of the outriggers for leveling the bottom carriage. The top carriage is leveled by two handwheels located 45 degrees from either side of the center line of the front outrigger on the bottom carriage. The leveling system has a range of 9 degrees. The front of the mount is protected by a flat shield of armor plate. Weight of removable components: Liner (muzzle section) Liner (center section) Liner (breech section) Retaining rings Over-all length of tube 185 in. (470 cm) Over-all length of gun and tube 194.1 in. (493.8 cm) Distance from center line of trunnions to breech face 6.5 in. Travel of projectile in bore 157.4 in. (400 cm) Volume of chamber 226 cu in. Rated maximufti powder pressure 33,000 lb per sq in. (approx.) Muzzle velocity „ 2,690 ft per sec Maximum effective ceiling Rifling: Number of grooves Depth of grooves Width of grooves Width of lands 25,000 ft (at 70-deg elevation) 157.4 in. (400 cm) Right-hand Increasing 1 turn in 45 calibers to 1 turn in 30 calibers Type of breech mechanism Semiautomatic horizon- Rate of fire 15 rounds per min (practical rate at a mechanized target) 20 rounds per min (practical rate at an aerial target) Type Independent liquid and hydropneumatic Weight of recuperator cylinder 285 lb Weight of recoil cylinder 239 lb Weight of recoiling parts in recoil mechanism 108.5 lb Total weight of recoiling parts (with gun and tube) 3,1591b Type of recoil Control rod type with secondary con- trol rod type regulating counterrecoil O-degree elevation 41.5 in. (105 cm) 25-degree elevation 33.46 in. (85 cm) Maximum elevation 27.75 in. (70 cm) Capacity of recoil cylinder 2.5 gal Capacity of recuperator cylinder 4. ,404 lb Maximum depression minus 3 deg Loading angles All angles Height of trunnion above ground (firing position) 5.2 ft Height of working platform (firing) 0.8 ft Height of trunnion above working platform.. 4.4 ft Leveling. Pivots located 45 deg from either side of center line of front outrigger (total of 9 deg each) Number of turns of handwheel to elevate from 0 to 85 degrees: Elevation for one turn of elevating handwheel: High gear 2 deg (35.4 mils) Low gear..

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