Aasen mortar

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The Aasen mortar (Mortier Aasen) was a 3.5-inch (88.9-mm) gun-mortar (or bomb thrower under classification of the time). The Aasen was invented in France in 1915 by Nils Aasen, an arms designer of Norwegian descent. It was adopted by the Russian Empire in 1915-1916, and was used during the First World War.

Aazin.jpg

The barrel of the mortar was steel. Aasen mortar was a breech loading weapon so a shell was loaded separately and the bolt action discharging a blank rifle round connected to a barrel. This device was a modified form of the obsolete Gras rifle, which was transferred to Russia by France in substantial numbers. The hoisting mechanism was made of two slats, attached to the rear of the barrel, and rod folding rack. The weight of the mortar in firing mode was approximately 1.5 pood (54.2 lbs).

Comparison of Russian Front mortars (1915—1917)[citation needed]
Mortar weight Calibre in mm Total weight of shell Explosive shell Muzzle velocity in meters/second Rate of fire, rounds/minute Maximum range (meters)
G.R. 9 cm mortar 91 bomb 3,3 0,7 100 4-5 500
Aasen 75 grenade 1,2 0,4 400
20-мм 20 grenade 2,45 0,17 61
Lihonina mortar 20 bomb 3,0 0,34 16,8 500

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