The HERC JOV-3 was a two-seat tandem helicopter originally designed by

Drago Jovanovich Dragoljub Kosta Jovanovich (January 24, 1916 – November 12, 1983), also known under his pen name D. K. or "Gish" Jovanovich, was a Serbian-American helicopter designer, inventor, and pioneer in autogyro technology. Born in the Kingdom of Yugoslav ...

at the Helicopter Engineering Research Corporation (HERC). The helicopter first flew in 1948.McCulloch YH-30 MC-4C, Harold A. Skaarup, Alabama Warbird Survivors 2003: A Handbook on Where to Find Them, Writers Club Press, 2002, , pages 98-100 When

McCulloch Aircraft Corporation __NOTOC__ The McCulloch Aircraft Corporation was the aircraft division of the McCulloch Motors Corporation. McCulloch acquired Helicopter Engineering Research Corp in 1951. It manufactured two innovative helicopter designs – the tandem-rotor ...

purchased HERC they improved the design for prospective military use and it became the

McCulloch MC-4 The McCulloch Model MC-4 was an American tandem-rotor helicopter and was the first helicopter developed by McCulloch Aircraft Corporation, a division of McCulloch Motors Corporation.Harding, Stephen ''U.S. Army Aircraft Since 1947'', Airlife Pub ...

References

External links

'' "Cutting 'Copter Costs" '', March 1948, Popular Science
{{McCulloch aircraft Tandem rotor helicopters 1940s United States helicopters Single-engined piston helicopters Aircraft first flown in 1948