AEROLOGY

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00809A000600200490-7
• Release Decision: RIPPUB
• Original Classification: R
• Document Page Count: 2
• Document Creation Date: December 22, 2016
• Document Release Date: June 29, 2011
• Sequence Number: 490
• Publication Date: December 22, 1948
• Content Type: REPORT

Sanitized Copy Approved for Release 2011/06/29: CIA-RDP80-00809A000600200490-7
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CE'RAL IN' 0I ^ REPOR1
INFORMATION FROM
FOREIGN DOCUMENTS OR RADIO BROADCASTS CD NO.
COUNTRY ussft
SUBJECT Aerology
HOW
PUBLISHED Monthly periodical
WHERE
PUBLISHED Warsaw, Poland
DATE
PUBLISHED April 1948
LANGUAGE Polish
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DATE OF
INFORMATION 1948
'2187
DATE DIST. 12) December 1946
NO. OF PAGES 2
SUPPLEMENT TO
REPORT NO.
SOURCE. 3kr, rsdlata Polska. Vol IV, No 4 (35), 1943. (FM Per Abe ;01'67 --
Information specifically requested.)
.rX7
Lt Rudolf Urich
(Polish translation of a Russian article "The Falcone of Stalin" by Lt
Col. J. Maslen)
Increased speeds an-1 blind-flying equipment are freeing aviation from at-,
mospherio dangers., Hoverer, ice formation in flight still remains one of the
major problems,
Ice formation may occur vhnn the plane finds itself in a cloud, fog, rain,
or vet snow, i.e., -then water vapor is present is amounts of 85-100 percent.
The fact that modern planes are chiefly constructed of metal further increases
this danger since there is an electrical potential set up betvwen the metal
and the atmosphere which aide condensation of water vapor. At sufficiently
low temperatures this vapor forms an ice coating which at time can be j4
centimeters thish.
Calculations show that with a significant formation of ice, the weight
of the plane Increases by 10 percent and more. This in itself is not the
greatest dauber. The thick coating of ice on the wings has the effect of
changing the aerodynamic properties of the plane, and this is the greatest
danger.
Regulations state that to avoid icing no plane should enter a cloud with
a teaperaturc of 0 to -15 degrees Centigrade This regulation does not
specifically state the types of planes to which this refers but is geheral in
nature.
CL+SSIFICATION RhSTRICTED
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Sanitized Copy Approved for Release 2011/06/29: CIA-RDP80-00809A000600200490-7
 Sanitized Copy Approved for Release 2011/06/29: CIA-RDP80-00809A000600200490-7
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With an increase in plane speeds this problem is somewhat alleviated.
Due to air friction there is a body of hot air which continually surrounds
the plane. The tomperature of this body of air varies with the velocity
of the plane. In tests on V-2 rockets at speeds of 4,000 kilometers per
hour, the rocket was heated to a red heat due to friction. The table
below presents data on the increase in temperature at various air epdeds.
Speed Temperature Increase
100
200
300
400
500
700
800
1,000
L,500
.2,000
3,000
4,000
At present the heating of the cabin and crew of a plans is one of the
major problems. However, a new problem, that of cooling a plane flying at high
danger from ice formation can be avoided.
0.38
1.5.
3.4
6.0
9.4
18.6
24.0
38.0
85.0
,152.0
431.0
606.0
This table shows the speeds and resulting temperature by means of which
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STAT
Sanitized Copy Approved for Release 2011/06/29: CIA-RDP80-00809A000600200490-7