ARMAMENT PROVING GROUNDS AT ZIELONKA; GERMAN ANTI-AIRCRAFT GUN

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00457R014300120008-6
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 3
• Document Creation Date: December 20, 2016
• Document Release Date: March 15, 2006
• Sequence Number: 8
• Publication Date: October 16, 1952
• Content Type: REPORT

Approved For Release 2006/04/18 : CIA-RDP82-00457RO14300120008-6
CENTRAL. INTELLIGENCE AGENCY
SECRET/CONTROL U.S. OFFICIALS ONLY
SECURITY INFORMATION
INFORMATION REPORT REPORT
CD NO.
COUNTRY Poland
DATE DISTR. 16 October 1952
SUBJECT Armament Proving Grounds at Zielonka German NO. OF PAGES 3
Anti-Aircraft Gun
DATE OF
INFO.
PLACE
ACQUIRED
THIS DOCUMENT CONTAINS INFORMATION AFFECTING THE NATI.ONAL DEFENSE'
OF THE UNITED STATES, WITHIN THE MEANING OF TITLE 18, SECTIONS 793
AND 794, OF THE U.S. CODE, AS AMENDED, ITS TRANSMISSION OR REVE-
LATION OF ITS.CONTENTS TO OR RECEIPT BY AN UNAUTHORIZED PERSON 15
PROHIBITED BY LAW. THE REPRODUCTION OF,: THIS FORM IS PROHIBITED.
25X1
NO. OF ENCLS.
(LISTED BELOW)
SUPPLEMENT TO
25X1 REPORT NO.
THIS IS UNEVALUATED INFORMATION
The experimental polygon of the Institute for Prect'sion Mechanics (Instytut
Mechaniki Pracyzyjnej IMP) is located at Zielonka, 18 km. east of Warsaw.
The IMP is located at ulica Duchnicka 3. Warsaw; it is ultimately responsible
to the Polish General Staff and is directly subordinate to the Technical
Military Institute.. (Wo jskgwy--iltStytut-Teo.bnicyn WIT) , situated at ulica
Rakowieckay- I.'rsaw, next to the Commercial School. The general director of
the IMP is Dr. Waclaw Stetkiewicz, a non-Communist Pole and an excellent
specialist. The director of the polygon is engineer Henryk Paszkow.ski, who is
assistant 'to the chair for ballistics at the Warsaw Polytechnic; also a plbyed
at the polygon are two Poles, Colonel Aleksander Korsak and engineer (fnu) Kastro,
both of whom were known before the war as specialists in small caliber arms.
At the po],gonythere : arec lkrge stocks of various kinds of unknown or little known
German arms, inventions, or special items which were captured during the war
and which are carefully guarded at the polygon. these
inventions are, of course, all known to the Mussisnq,since they took possession
of everything that they discovered in Poland or in Germany; there are, however,
some I tions at the polygon that were discovered several years after the war
by the' Poles.TbE.Hussianbs could not,_ therefore, take them to the Soviet Union.
Since 1949, all experiments at the polygon were directed and observed by Soviet
:bTficers and specialists, who constitute a majority of the polygon personnel.
The IMP,has the following materiel at the Zielonka polygon-
a. German artillery guns of all calibers, which were used by the Germans.
b. German-anti-tank guns and rifles, e.g., Panzerfaust~;, Panzerschreck.
c. Eng]t sh anti-tank guns, piat.
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STATE X NAVY
ARMY X
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-2-
d.
Light machine guns, and infantry anti-tank and anti-aircraft guns of Germany
Italian, French, English, American and Soviet Origin; the polygon has had
guns of Soviet origin only recently.
e.
Grenades and mortars (miotacze min), all of American origin.
f.
Aviation bombs and..mines, of various origin.
g. Explosives, of various origin.
h. Directors, (aparat centralny), most of which are Zeiss models for anti-aircraft
batteries.
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#. The most important item in the IMP's possession at the polygon is an unknown or
littlte known German anti-aircraft gun which is guarded with the utmost secrecy.
Its bar'ref is about eight meters long, and it has a caliber of 150 millimeters.
The base of the gun is a very large tripod; when the barrel is level, the total
height of the gun is.about three meters. The gun is entirely mechanized and is
equipped with five electric motors, attached to the gun, which are utilized to
move the gun from one location to another and to operate its firing mechanism.
All firing :data is transmitted to the gun from a director through a remote
indicator (dalekwskazywacz).
5. In loading the gun, the shell is transported into the gun by means of a carriage
(3nechaniim donoszenia.) that is fastened to the gun and that turns with the gun.
From the carriage, the shell is transferred onto rubber rollers, located on the
left side of the gun's breech block (komora zamkowa) which transmit the shell
to the-fuse setting mechanism (nastawnica zapalnika5; this latter mechanism
is operated by a special electric motor. When the fuse has been set, the shell
is withdrawn and is grasped by three extractors (chwyty podajnika) of a
mechanism (podajnik) that transfers the shell from one place to another, and
then shifts the shell from its extractors onto a second set of rubber rollers that
are located in front of the barrel and on a level with the axis of the barrels
these rollers in turn transport the shell into the chamber (komora nabojowa).
When the shell has entered the chamber, all mechanisms of the gun, including the
gun lock, (zamek dziala) which closes the gun barrel, are automatically locked;
as soon as this locking process is completed, the gun fires automatically.
6. Close to the fuse setting mechanism, there is a platform for a member of the
gun crew; this man checks on any malfunctions which may take place in the carriages.
On the right side of the gun are two seats for two men whose function it is to
check the azimuth setting and the elevation of the gun. On the left side of the
gun are two similar seats for two other men; these men check and man the fuse
setting mechanism.
7. The gun is connected by means of two cables to the director and to the blectric
aggregate (agregatu elekt). The gun can also employ electric current from the
municipal power system.
8. The shells are all of one piece, i.e., the projectile and the (ghel case are
fixed together. The fuses that are employed for these shells are all of German
origin, and are marked with various letters, numbers, and colors; informant
could not provide any details of the fuse marking system. The propellant charge for
one shell consists of a bag containing about fourteen kilograms of powder in
the shape of tubes or pipes (proch w rurkach) and of about 1.5 kilograms of powder
in the form of sticks (proch w ksztalcie laseczek); the powder in tubes is
relatively black in color, while the stick powder is the col-or of light steel.
This gun's projectile can attain a height (pulap wysokosci donoszenia pocisku)
of 18 to 20 kilometers. All missiles emroloved at Zielonka are of German origins
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9. An anti-aircraft gun, or possibly several, similar to the one described above,
was captured. by the Russians in Berlin and was shipped to the Soviet Union.
The gun in the possession of the IMP at Zielonka, however, was discovered by
the Poles in the beginning of 19+8 somewhere in Eilesii; when found, it was
25X1 in new condition and had never been used, t is certain
that the Zielonka gun is the only one of its kind in Polish hands in Poland,
25X1 There are, however, indications that similar guns, and ammunition for them, are
produced in the Soviet tjnion and are guarded as the highest Soviet military
secret; it is very unlikely that the Russians will show these
guns to the satellite states before the outbreak of war.
10. Because it was determined to prevent the Russians during and after the war from
taking the so-called German properties, the Polish population of Poznan province
gathered and hid a large number of unknown or little known arms and inventions
of German and other origin.. During the years following the war,msiy'.items,
such as armament parts and instrument panels, have appeared and are still appearing
in entirely new condition and still in their factory packing.
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