The American Aircraft Penetrator was modified from a helicopter produced by what nation's military?
Bell UH-1 Iroquois The Bell UH-1 Iroquois (nicknamed "Huey") is a utility military helicopter powered by a single turboshaft engine, with two-blade main and tail rotors. The first member of the prolific Huey family, it was developed by Bell Helicopter to meet a United States Army's 1952 requirement for a medical evacuation and utility helicopter, and first flew in 1956. The UH-1 was the first turbine-powered helicopter to enter production in 1960 for the United States military, and more than 16,000 have been built since.
Mil Mi-22 The Mil Mi-22 was a Soviet single-engined helicopter project of the 1960s. It resembled the Mil Mi-2 in size and shape and had problems with planned engine configuration (first W-2 config.) Later schematics interested the Russian military with illustrations of a higher-capacity engine configuration, 10A GTD-940 kW to be precise, (next W-20 config.) and had an improved fuselage, unlike the earlier Mil Mi-2. It was also planned to have a four-bladed main rotor, a two-bladed tail rotor, a larger cabin than that in the Mil Mi-2, and a skid undercarriage. The Mi-22 lost out to the larger Mi-24, which had better assault/transport abilities.