The Mil V-7 was an unusual experimental four-seat helicopter with AI-7 ramjets at the tips of the two rotor blades. It had an egg-shaped fuselage, skid undercarriage, and a two-bladed tail rotor on a short tubular tail boom. Four aircraft were built in the late 1950s, but only one is known to have flown, with only the pilot aboard. Specifications See also list of experimental aircraft References 1950s Soviet experimental aircraft Abandoned military aircraft projects of the Soviet Union V-7 1950s Soviet helicopters Tipjet-powered helicopters Ramjet-powered aircraft aircraft first flown in 1959