|The Vertical Flight Society|
US receives free attack helicopter technology from Russia - discover24.ru:
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AUTHOR Vadim Botnaryuk
The American publication The Aviationist published an article in which it mentioned the collaboration between AVX and the Russian design bureau Kamov.
It is reported that at that time, namely, in the 90s of the last century, the Americans received technologies from the Kamov employees free of charge, thanks to which the CCH project was developed. The materials say that the Russians built helicopters on a coaxial scheme and flew on them for many years, while they were very open in their technologies.
At various meetings, they provided a number of documents, including those related to screw spacing. Thanks to the decisions that were used in the design of the Ka-50 and Ka-52 helicopters, AVX was able to reduce the distance between the main lower and upper rotors, and reduce the total weight of the helicopter.
Pi notes that the statement of cooperation was made at the annual conference of the U.S. Army, which was held back in October 2019.
Kamov Ka-50 Hokum: Details
Ka-52 Alligator: Details
AVX/L3Harris compound, coaxial helicopter: Details