Amvik eBook Solutions

This is an illustrated history of Frank N. Piasecki and his, at the time, advanced, unique and innovating tandem-rotor H-21 helicopter.

During the early stages of helicopter development, when helicopters were able to lift just slightly more than their own weight, the military services were eager

First envisioned by Leonardo da Vinci and first deployed in World War II, the helicopter is now a universal icon of modern warfare, a key component of combat pl

The helicopter came on the scene too late to play other than a minor role in the Second World War but by the Korean conflict the Bell H-13 Sioux, OH-23 Raven, a