Helicopter Market Size, Trends and Forecast to 2029 | Airbus Helicopters SAS (France), Bell Helicopters (US), The Boeing Company (US), Leonardo S.p.A. (Italy), Sirkorsky-Lockheed Martin (US), Russian Helicopters (Russia), Kawasaki Heavy Industries (Japan), Bell Helicopter-Textron, Leonardo S.P.A and Lockheed Martin Corporation