[THE LARGEST TURBOPROP ENGINES IN HISTORY.] The Antonov An-22, nicknamed “Antei,” is a massive Soviet-designed turboprop transport aircraft developed by the Antonov design bureau during the 1960s. It was the world’s first wide-body transport aircraft and remains the largest turboprop-powered airplane ever built. Designed primarily for military heavy-lift missions, the An-22 can carry oversized cargo, troops, vehicles, and humanitarian supplies over long distances using its four enormous contra-r