Tag Archive for 'k18'

10.5 cm l.F.H. 18: Gun—Howitzer

10.5 cm l.F.H. 18: Gun—Howitzer

This howitzer is a counterpart of the United States 105 mm howitzer, and is the standard divisional field artillery howitzer of the German Army. It is approximately 116 inches long with very heavy, simply designed breech mechanism. The recoil and recuperator system is of the hydropneumatic type. The top carriage is principally of welded design, made of sheet steel 0.3 cm thick. The trunnion caps are of the split bearing type. The completely inclosed elevating mechanism allows a total elevating arc of 47°. The traversing mechanism is of the screw and nut type, almost completely inclosed with a total traversing arc of 56° 16′.

The piece can be emplaced for firing with a minimum number of operations, as it is automatically placed in three-point suspension when the trails are opened. The bottom carriage is of more complicated design than the United States equipment. The wheels of the l.F.H. 18 are made of a light alloy and are of the fluted disk type with solid rubber tires. The shield is lightly constructed. Optical fire control equipment is very similar to that used on the American equipment.

Model l.F.H. 18M has been fitted with a muzzle brake and a somewhat different carriage, with wooden-spoked wheels. This gun is mounted on the German Pz. Kw. II tank chassis which takes the name of “Wasp” (Wespe). Ammunition Charge F is the long-range charge (Fernladung) which can only be used when the gun is fitted with a muzzle brake.

The most recent model of the German 10.5 cm howitzer is the l.F.H. 42. It differs from the l.F.H. 18 in that its chamber is bored out and has interchangeable sleeves, making the regular use of a 6-charge propellant possible. The l.F.H. 42 is also approximately 11 inches longer.

SPECIFICATIONS

Caliber         10.49 cm (4.13 ins.)
Length of tube 9 ft.
Weight (travelling position)
Weight (firing position) 4,312 lb.
Length (travelling position) 18 ft., 4 ins.
Length (firing position) 19 ft., 8 ins.
Height (travelling position) 6 ft., 2 ins.
Height (firing position) 6 ft., 2 ins.
Width (overall) 78.8 ins.
Width of trail spread 11 ft., 9 ins.
Length of bore 94.2 ins. (22.8 cals.)
No. of grooves 32
Width of grooves .223 in.
Depth of grooves .047 in.
Width of lands .174 in.
Muzzle velocity (H.E. shell) 1,542 f.s.
Max. range (horizontal) 11,674 yds.
Traverse 56°
Elevation 40°
Depression -7°
Length of recoil 43.3 ins.
Ammunition H.E.—A.P. tracer—A.P.C. tracer—hollow charge—smoke
Wt. of projectile (H.E.) 32.6 lb.; A.P. 31.25 lb.

German: p. 108

10 cm K. 18: Field Gun

10 cm K. 18: Field Gun

The 10 cm Field Gun K. 18 was at one time standard equipment for German Field Artillery. The barrel consists of a jacket, an exchangeable tube, and a screwed-on breech. The breech mechanism is a single-motion, crank-operated, horizontal sliding block type, fitted with a repeating trip-lock. All the usual safety devices are provided, and, in addition, the breech is secured when the buffer piston rod is disconnected from the gun.

The top carriage is arranged to traverse about a vertical pivot up to 30° right and left. The cradle is mounted on the top carriage by trunnions set far to the rear. Balance is maintained by a pair of equilibrators, one on each side of the weapon. The hydraulic buffer is housed in the cradle, whereas the hydropneumatic recuperator is situated above the gun.

The carriage, of split-trail construction, is so designed that the wheels and the two trail spades are able to adjust themselves to irregularities of the surface of the ground. The spring suspension may readily be put in action for traveling, and out of action for firing, by means of two handwheels. The piece may be transported by either motor vehicle or horses. For mechanical traction, rubber tires are fitted to the carriage.

A pointer or indicator system is used for sighting purposes. Ammunition used is a high-explosive shell with a TNT bursting charge.

SPECIFICATIONS

Caliber         105 mm (4.137 ins.)
Weight of gun 4,011.28 lb.
Length 17.9 ft.
Muzzle velocity (maximum) 2,660 f/s
Range 20,776 yds.
Elevation 45°
Depression
Traverse 60°

German: p. 107