Florian Ion Petrescu Knihy

The book explores the remarkable achievements of Archytas, an Ancient Greek polymath who, around 400 BC, is credited with creating the first artificial flying device. Known as The Pigeon, this bird-shaped model was propelled by steam and is believed to have flown approximately 200 meters. The narrative delves into the historical context of Archytas's inventions, highlighting his contributions to philosophy, mathematics, and engineering, while examining the significance of this early innovation in the realm of flight.

The book introduces innovative methods for analyzing the efficiency and dynamics of cam mechanisms. It covers the formulation of dynamic and differential equations specific to rotating cams and followers, along with kinematic dynamics. Each chapter delves into different aspects, including Lagrange equations, dynamic analysis of various models, and the determination of dynamic parameters for classic and rotary camshaft systems. The comprehensive approach blends theoretical insights with practical applications, making it a valuable resource for understanding machine dynamics.

Focusing on its operational versatility, the Boeing Vertol CH-46 Sea Knight serves as a medium-lift tandem rotor transport helicopter for the US Marine Corps, facilitating various missions such as troop transport, supply delivery, and search and rescue. Its capabilities extend to combat support and tactical recovery operations. The helicopter has also been utilized by Canada and several other countries, with a commercial variant known as the BV 107-II. The Sea Knight's all-weather functionality enhances its effectiveness in diverse military scenarios.

The book explores the development and cancellation of significant STOVL (Short Takeoff and Vertical Landing) aircraft designs, focusing on the Armstrong Whitworth AW.681 cargo aircraft, which was in progress before its 1965 cancellation, and the Dornier Do 31, which advanced to three experimental models before being halted in 1970. It delves into the technical challenges and historical context surrounding these innovative projects in aviation history.

Focusing on military aviation technology, this book covers a range of iconic aircraft, including the F/A-18 Hornet, a versatile multirole fighter, and the AC-130 gunship, known for its heavy armament. It details the capabilities of the Bell AH-1 SuperCobra and the Boeing AH-64 Apache attack helicopters, as well as the supersonic T-38 Talon trainer. The AV-8B Harrier II is highlighted for its V/STOL capabilities, while the B-1 Lancer and B-2 Spirit represent advancements in strategic bombing and stealth technology, respectively.