THE HELICOPTER

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00039R000200040028-6
• Release Decision: RIPPUB
• Original Classification: R
• Document Page Count: 4
• Document Creation Date: December 22, 2016
• Document Release Date: April 20, 2012
• Sequence Number: 28
• Publication Date: June 5, 1952
• Content Type: REPORT

Declassified in Part - Sanitized Copy Approved for Release 2012/04/20 : CIA-RDP82-00039R000200040028-6
Declassified in Part - Sanitized Copy Approved for Release 2012/04/20 : CIA-RDP82-00039R000200040028-6
STAT
 Declassified in Part - Sanitized Copy Approved for Release 2012/04/20 : CIA-RDP82-00039R000200040028-6
RESTAICTE~
Chapter I
Luitrnai'ff
THEq!_:p? HELICOPTER
The idea of the helicopter dates back 200 years, when M. B.
Lomonosov announced on L. February 1751 to the Academy of Sciences
his invention of an aerodynamic machine for carrying meteorological
instruments to a desired height. It was a small, twin-propeller
helicopter. The propellers were co-axial, placed one over the
other, and set into motion by a powerful spring.
In the course of years, a number of inventors followed that
of Lomonosov.
Thus, in 1869, A. C. Lodygin proposed an t~eleetroplane" with
a special electric motor to rotate the propellers.
In 1870-71, N. A.'Rykachev carried out a study of propellers
with a view toward determining their power and draft capacities.
In 1881, the inventor, Grokhovskiy, drew up a plan for a
helicopter combining the characteristics of the airplane and
helicopter. It was to be equipped with two propellers -- one for
raising the machine and the other, for keeping it suspended. In
1896, a foreman of the Sestroretskiy Plant, named Konovalov, drew
up a plan for a twin-propeller, gasoline-operated helicopter,
Among those who contributed to the development of the helicopter,
were such names as v. I. l"Iendeleyev, N. Yep Zhukovskiy, and S. A.
Chaplygin,
In 1907, K. A. Antonov applied for a patent for his design of
a helicopter, which was subsequently built according to his plan.
It was a twin-propeller, co-axial machine with numerous aluminum
discs and blades. It had a small propeller for horizontal motion,
lIES TRIC.TED
Declassified in Part - Sanitized Copy Approved for Release 2012/04/20 : CIA-RDP82-00039R000200040028-6
 Declassified in Part - Sanitized Copy Approved for Release 2012/04/20 : CIA-RDP82-00039R000200040028-6
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and its motor had only 3! horsepower.
However, it was D. N. Yux 1 yev, who at the beginning of the
x was instrumental in launching the modern era of
20th eentuy,
helicopters In 1908 - 1910, he designed a number of single
helicopter, with a steering propeller. Subsequently, he designed
machines which were to have 70- or 50-'horsepower motors. Finally,
in 1912y he designed a helicopter, to be driven by a 2~Mhorsepower
Ansani motors. The machine' was tested, but the lack of funds
prevented the completion of its design.
Yur'yev also invented the automatic propeller-pitch regulator.
Uncler the direction of A. N. Izakson and A. M. Cheremukhin,
in 1930, the 1-EA helicopter was built, which made a record flight
rising to 6o~ meters and beating the record set in 1928 by the
Italian AscanLo helicopter (18 meters)and later, in 1936, the
record made by the Brege-Doran helicopter (180 meters),
In 1933, the Soviet 5-EA helicopter was built and, subsequently,
the ll-EA and 11-EAPD; the l1-EAP13 made regular flights, carrying
two persons.
In the air parades held in Tushino in 19)46-1947, appeared the
~1OmegaU helicopters, designed by Bratukhin. They rose and. landed
vertically without any preliminary runs,
In 1928, at Tushino two different types of helicopter were
demonstrated, One, a tiny machine, designed by N. I. Katnov, was
brought into the field on the platform of a truck, and rose into the
air directly from the truck. After circling the a irfield, it
stopped still in the air, then slowly landed again on the truck
platform. The second was a helicopter designed by i3ratukhin, a
twin-motor plane, winner of the Stalin prize.
Kamovts and Bratukhin' helicopters represent the new achievements
of Soviet science. Icamov1s ''Irkutyanint1 is the lightest machine
.ra ' -.
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Declassified in Part - Sanitized Copy Approved for Release 2012/04/20 : CIA-RDP82-00039R000200040028-6
 Declassified in Part - Sanitized Copy Approved for Release 2012/04/20 : CIA-RDP82-00039R000200040028-6
REST RIOTED:
known and carries ont person. Attempts abroad to coin a eimiar
machine have not been success?ul, l3ratukhifl' o helicopter is a
powerful mac1ine, capable oil carrying out various tacks in the
national economy and the Soviet armed forces.
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Declassified in Part - Sanitized Cop Approved for Release 2012/04/20 : CIA-RDP82-00039R000200040028-6