The Yakovlev Yak-44 was a proposed twin turboprop Airborne Early Warning (AEW) aircraft, resembling the United States Navy's E-2 Hawkeye, and intended for use with the Soviet Navy's Ulyanovsk class supercarriers. Along with the aircraft carrier it would have flown from, the Yak-44 was cancelled after the demise of the Soviet Union. A full-scale mock-up with foldable wings was built.
Read more about Yakovlev Yak-44: Design and Development, Specifications (Yak-44E)