10.5 cm leFH 18M

Infobox Weapon
name=10.5 cm leFH 18M


caption=leFH 18M in the Hämeenlinna Artillery Museum
origin=Germany
type=howitzer
is_ranged=
is_bladed=
is_explosive=
is_artillery=yes
is_vehicle=
is_UK=
service=1941-1945
used_by=flag|Nazi Germany
flag|Finland
wars=World War II
designer=
design_date=1940-41
manufacturer=Rheinmetall
production_date=1941-1945
number=
variants=
weight=1,985 kg (4,377 lbs)
length=3.308 m (11 ft)
part_length=2.612 m (8.5 ft)
width=
height=
crew=
cartridge=cased separate-loading (6 charges)
caliber=105 mm (4.13 in)
action=
rate=4-6 rpm
velocity=540 m/s (1,772 ft/s)
range=12,325 m (13,479 yds)
max_range=
feed=
sights=
breech=horizontal sliding block
recoil=hydropneumatic
carriage=split trail
elevation=-6° 30' to +40° 30'
traverse=56°
blade_type=
hilt_type=
sheath_type=
head_type=
haft_type=
diameter=
filling=
filling_weight=
detonation=
yield=
armour=
primary_armament=
secondary_armament=
engine=
engine_power=
pw_ratio=
suspension=
vehicle_range=
speed=

The 10.5 cm leFH 18M (German: "leichte Feldhaubitze" "light field howitzer") was a German light howitzer used in the Second World War. The gun, less the carriage and shield, was also used as the armament of the SdKfz 124 Wespe self-propelled artillery vehicle.

History

The 10.5 cm leFH 18M superseded the 10.5 cm leFH 18 as the standard German divisional field howitzer used during the Second World War. It was designed and developed by Rheinmetall in after the war broke out in an effort to get more range from the basic leFH 18 design. A muzzle brake was fitted and the recoil system adjusted to allow the use of a more powerful charge and new long-range shell.
Generally it did not equip independent artillery battalions until after the Battle of Stalingrad in 1943. 53 units were also exported to Finland, where they were known as 105 H 33.

Description

It has a heavy, simple breech mechanism with a hydro-pneumatic recoil system. The leFH 18M was mounted on a towed chassis, with large metal or wooden wheels rimmed with rubber. Initially, it was fitted with a single-baffle muzzle brake of relatively low efficiency. This was later improved by welding two protruding ears to the rear of the port. However this style of muzzle brake proved troublesome with the early designs of fin-stabilized and discarding-sabot shells and a new cage-type muzzle brake was designed and fitted.
The new FH Gr Fern long-range shell was about 25 mm longer than the normal 105mm shells used by the leFH 18 guns, but had a shorter streamlined section behind the driving band to accommodate the larger powder charge required. This fit in the standard cartridge case, but protruded about 50mm past its mouth.
Ballistically, the 10.5 cm leFH 18M and the leFH 18/40 are identical.

References

* Englemann, Joachim and Scheibert, Horst. "Deutsche Artillerie 1934-1945: Eine Dokumentation in Text, Skizzen und Bildern: Ausrüstung, Gliderung, Ausbildung, Führung, Einsatz". Limburg/Lahn, Germany: C. A. Starke, 1974
* Gander, Terry and Chamberlain, Peter. "Weapons of the Third Reich: An Encyclopedic Survey of All Small Arms, Artillery and Special Weapons of the German Land Forces 1939-1945". New York: Doubleday, 1979 ISBN 0-385-15090-3

* Hogg, Ian V. "German Artillery of World War Two". 2nd corrected edition. Mechanicsville, PA: Stackpole Books, 1997 ISBN 1-85367-480-X

External links

*http://www.wlhoward.com/id1074.htm Ordnance Technical Intelligence Museum Webpage
*http://www.germanwarmachine.com/weapons/artillery/lefh18.htm

ee also