From the early days of the Platt-LePage XR-1 and the ambitious twin-rotor McDonnell Whirlaway, this documentary traces the engineering challenges and strategic shifts that defined the post-war rotary wing era. Discover how experimental designs like the massive Hughes XH-17 Sky Crane and the tip-jet powered Hiller Hornet pushed the boundaries of physics, often resulting in persistent technical failures that paved the way for the successful platforms of today. We take a deep dive into the high-stakes competitions of the Cold War and the modern era, featuring the legendary Lockheed AH-56A Cheyenne and the stealthy RAH-66 Comanche. Learn about the unconventional tail-sitters like the Convair Pogo and the evolution of tiltrotor technology from the XV-15 to the V-22 Osprey. From the compound speed of the Sikorsky S-97 Raider to the next-generation contests of the FARA and FLRAA programs, this

Source: Every Failed US Helicopter Ever Built & Why They Failed