The Banu Musa Built a Fresh-Air System for Dangerous Wells 1,100 Years Ago.

✈️ The Antonov AN-2 was designed by Oleg Antonov as a simple, rugged utility aircraft for agricultural and transport work across the USSR. Amazingly it can fly at speeds as low as 25 MPH, making easy to fly, easy to land and impossible to stall in the conventional sense/ In the right conditions it can even fly backwards... Produced in enormous numbers across the Soviet Union, Poland and China, the An-2 served in military and civilian roles across dozens of nations and remains in active service i