by Fred J. Calfior and Douglas W. Miller
You notice a heavy black flow of oil is gushing from your oil cap on the nose. The engine is heating up and you are in big trouble!
“Paul Cornu's helicopter was the first to make a free flight carrying a pilot on November 13, 1907. It was powered by an Antoinette engine. On its first flight, it rose about 1 foot, and then climbed to 5 feet with both Cornu and his brother on board! Unfortunately, he lacked the money to continue with his experiments. Back to the drawing board!”