Degtyaryov's machine gun PD (Degtyaryov Pehotnyj)
Within Great Domestic war by the basic sample of the automatic weapon fair
Supports of infantry in взводном a part in Red Army the manual machine gun
was in 7,62-mm
Degtyaryov PD (Degtyaryov, infantry), created in 1927г. Its automatics worked by a principle
Feedbacks of powder gases from the channel of a trunk, lock-out was carried out by cultivation in the parties
Fighting. The shock mechanism - type, the trigger mechanism is calculated only
On continuous fire. The safety lock of automatic type located for trigger
скобой, served simultaneously as its emphasis. Rationally solved scheme of automatics,
Considerably the smaller sizes boxes in comparison with other machine guns of that
Time (that was reached by use of a sliding shutter and direct submission of cartridges from
Shop), Thought over enough Configuration of mobile system have allowed to reduce
Lump of the weapon. Disk shop on 47 cartridges (all over again them was 49, but this number
It was necessary to reduce to raise reliability of work of shop), having the big dead weight
(1,64 kg), inconvenient forms and dimensions, created the certain difficulties at operation
The weapon. Thus, all the reached advantages on weight of the machine gun have been lost
Because of excessive weight of shop. PD in fighting position weighed 11,3 kg, that for manual
Machine gun it is superfluous. To positive features of the weapon concerned simplicity of the device,
On what the original design of locking and with great dispatch-trigger mechanisms has affected.
The gas regulator in system of automatics gave considerable advantages at work in conditions
Pollution, extreme temperatures. Aim shooting was conducted from a machine gun
On distance up to 800 m. Fighting application within war has revealed numerous
Constructive and industrial lacks ДП. So, because of absence of the handle of management,
At firing the fighter could not keep strongly enough a machine gun on a line of an aiming.
The automatic safety lock was inconvenient for using at long shooting;
The fighting spring located by a number with a trunk, heated up from it, that
Negatively affected its properties; weak fastening led them
утере in marching conditions. In 1943 — 1944 the design of machine gun PD was essentially
upgrade: For increase of survivability the fighting spring is transferred in back
Part boxes; details of a shutter are strengthened; the trigger mechanism —
is advanced
The automatic safety lock is replaced on; for increase of stability of the weapon
During shooting the pistol handle is entered and the form of a butt, and also
is changed
It is mounted fixed сошка, that has allowed to level more conveniently the weapon on district.
The modernized variant of a machine gun of Degtyaryov in August, 1944 has acted on arms
Infantry under designation PDM. Owing to simplicity of the device, reliability of action, accuracy
Shooting and a high maneuverability, PD/PDM with honour has passed severe front tests.
In total for four years of war the Soviet gunmakers have transferred front to the little more than 700 000
Manual machine guns PD/PDM.
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