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The Night Orville Wright Had Too Many Cups Of Coffee

The Wright Brothers were the first to fly a controllable, self-propelled, heavier than air machine on December 17, 1903. Whenever Wilbur and Orville Wright's colleague, George Spratt, visited their Kitty Hawk glider test camp, lively discussions and arguments on flight persisted until late in the evening. On this particular night, October 2, 1902, Orville had one too many cups of coffee and could not sleep.

Although their 1902 glider's new fixed vertical tail had successfully corrected the machine's turning difficulties (at times the machine would turn in the wrong direction), now there was a new difficulty. Sometimes the glider would slide rapidly toward the ground in the direction of the lower wing. The wing tip would strike the ground and spin the machine around making a hole in the sand. The Wrights called this 'well-digging.' Today this airborne motion is called a tail-spin. Although 'well-digging' did not happen very often, it convinced the Wrights their flying machine's control system was incomplete. Well-digging had not occurred with their previous gliders, none of which had tails.

Orville, unable to sleep, worked out a technical explanation for well-digging and a method of overcoming it - the design of a new vertical tail - a real rudder. At breakfast the next day, he would discuss the design with his brothers, Wilbur and Lorin, and Spratt. This new rudder would perfect the Wrights' ability to control their glider. The brothers would later file a patent for this system. Today all modern winged aircraft use these same basic mechanisms for control. This was a major discovery in the history of aviation, due in part to too many cups of coffee.


About the Author

Jani Macari PallisJani Macari Pallis, PhD
Dr. Jani Macari Pallis is the founder of Cislunar Aerospace, Inc. She is also the creator of two excellent educational sites, The K-8 Aeronautics Internet Textbook, a multi-level interactive learning website, and Wright Again, a chronological history of the Wright Brothers.
Cislunar Aerospace Website

Further Reading
Wilbur and Orville: A Biography Of the Wright Brothers
by Fred Howard

Related Web Links
Wright Again
by Cislunar Aerospace, Inc.

Centennial of Flight
by U.S. Centennial Of Flight Commission

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