
Despite very positive response from the Department of Polar Aviation, the project was buried because of extreme bureaucracy and rigidity of the Soviet economy.
By the late 1980's, when extensive development of Siberian oil and natural gas deposits started, the interest in such an aircraft rose again and Korchagin offered an updated project named "Yamal" (after a Siberian peninsula). It had the same layout as "Angara" and included a number of innovations.


This time some progress has been made. Several companies agreed to finance the project, a full size mock-up has been built and shown and even an agreement with Canadair regarding their engines was achieved. Unfortunately, after the Soviet Union collapsed the project was abandoned once again. Korchagin died, the mock-up of "Yamal" was burned during fire-fighter exercise.
The mock-up:

Corresponding article in the Flight International: http://www.flightglobal.com/pdfarchive/view/1990/1990%20-%203106.html