Quantum Physics & Cosmology on Instagram: "John W. Pitts’ Sky Car was an experimental vertical flight machine developed in the early 1920s that aimed to achieve helicopter-like lift using a large circular rotor fitted with dozens of hinged blades. Powered by a Curtiss OX 5 engine producing about 90 horsepower, the design attempted to generate lift by changing the blade angles as they rotated, pushing air downward while minimizing drag on the return. In practice, the aircraft suffered from excess

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