The Fascinating History of Discussed And Argued The Question Sometimes

Welcome to another journey through aviation history! In this article, we explore some incredible early developments in aeronautics.

Key Takeaways

• discussed and argued the question, sometimes heatedly, until they concluded that an aeronautical propeller is
• essentially a wing rotating in the vertical plane. On that basis, they used data from

The Full Story

discussed and argued the question, sometimes heatedly, until they concluded that an aeronautical propeller is essentially a wing rotating in the vertical plane. On that basis, they used data from more wind tunnel tests to design their propellers. The finished blades were just over eight feet long, made of three laminations of glued spruce. The Wrights decided on twin "pusher" propellers (counter-rotating to cancel torque), which would act on a greater quantity of air than a single relatively slow propeller and not disturb airflow over the leading edge of the wings. Wilbur made a March 1903 entry in his notebook indicating the prototype propeller was 66% efficient. Modern wind tunnel tests on reproduction 1903 propellers show they were more than 75% efficient under the conditions of the first flights, "a remarkable feat", and actually had a peak efficiency of 82%. The Wrights wrote to several engine manufacturers, but none could meet their need for a sufficiently lightweight powerplant. They turned to their shop mechanic, Charlie Taylor, who built an engine in just six weeks in close consultation with the brothers. To keep the weight down the engine block was cast from aluminum, a rare practice at the time. The Wright/Taylor engine had a primitive version of a carburetor, and had no fuel pump. Gasoline was gravity-fed from the fuel tank mounted on a wing strut into a chamber next to the cylinders where it was mixed with air: The fuel-air mixture was then vaporized by heat from the crankcase, forcing it into the cylinders. The propeller drive chains, resembling those of bicycles, were supplied by a manufacturer of heavy-duty automobile chains. The Flyer cost less than a thousand dollars, in contrast to more than $50,000 in government funds given to Samuel Langley for his man-carrying Great Aerodrome just a few years earlier in 1898. The Wright Flyer had a wingspan of 40.3 ft (12.3 m), weighed 605 lb (274 kg), and had a 12 horsepower (8.9 kW), 180 lb (82 kg) engine. On June 24, 1903, Wilbur made a second presentation in Chicago to the Western Society of Engineers. He gave details about their 1902 experiments and glider flights, but avoided any mention of their plans for powered flight. === First powered flight === In camp at Kill Devil Hills, the Wrights endured weeks of delays caused by broken propeller shafts during engine tests. After the shafts were replaced (requiring two trips back to Dayton), Wilbur won a coin toss and made a three-second flight attempt on December 14, 1903, stalling after takeoff and causing minor damage to the Flyer. Because December 13, 1903, was a Sunday, the brothers did not make any attempts that day, even though the weather was good, so their first powered test flight happened on the 121st anniversary of the first hot air balloon test flight that the Montgolfier brothers had made on December 14, 1782. In a message to their family, Wilbur referred to the trial as having "only partial success", stating "the power

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This article was adapted from public domain historical archives to bring you accessible, plain English history.