1) Russian invention 2) Soviet invention
Found on
https://www.crosswordclues.com/clue/aerosani
An aerosani (aэросани, aerosani, literally `aerosled`) is a type of propeller-driven snowmobile, running on skis, used for communications, mail deliveries, medical aid, emergency recovery and border patrolling in northern Russia, as well as for recreation. Aerosanis were used by the Soviet Red Army during the Winter War and World War II. .....
Found on
http://en.wikipedia.org/wiki/Aerosani
No exact match found.
