One More Chapter on the Wrights Invented What?
"After having for twenty years capitalized upon this as your own work I do not see how you can give a correct account of this without bringing yourselves into open censure"--Dr. George Spratt to Orville Wright, 1922, on the development of the Wright flyer.
Dr. Spratt as an Inventor
A control wing aircraft built in 1939 by Dr. George Spratt's son, using the doctor's designs |
The concepts behind Dr. Spratt's amazing control wing invention were beyond
Wilbur Wright's understanding, as is clearly revealed in his letters to
the doctor. Contrary to what we are taught, it was Spratt's ideas that
the Wrights used to build their wind tunnel. Link here to great Youtube
videos of Spratt's control wing in flight and a few derivations of his
invention.
Dr. Spratt's Relationship with the Wrights
Dr. George Spratt was another of the pioneer aviators, who like Edward Huffaker, came to Kitty Hawk in 1901 to help the Wrights, at the request of Octave Chanute. Like Huffaker and Chanute, Spratt freely provided the Wrights with suggestions and help.
Wilbur publicly admitted early on that both Spratt and Huffaker had educated him on the movement and reversal of the center of pressure as a plane changes its angle of attack. But neither Wilbur nor Orville repeated that admission any time later.*
In 1901 at Kitty Hawk, the Wrights had warmed to Spratt, unlike Huffaker (see previous blog post), and they invited him back in 1902 and 1903. A lively correspondence sprang up between Wilbur and the doctor and information was exchanged. However, when the Wrights began their insults to early aviation by suing anyone they thought infringed on their 1906 glider patent, Spratt's response began to cool. Further, Spratt requested recognition for his important contributions to the Wrights' wind tunnel tests and later asked for help in building his "control wing" plane.Wilbur wrote back that it was enough that he had sent Spratt tables from the wind tunnel tests and shared information of his own. They were square and he owed him nothing.(What?) It is now established that the Wrights wanted the world to believe that their research was theirs and theirs alone--a myth that came to prevail..
Eventually, the friendship with the Wright brothers soured to the point that Spratt no longer would answer their letters.
Dr. Spratt's Stinging Last Letter to Orville Wright
Much later, in 1922, Orville Wright wrote Spratt for copies of the brothers' letters they had written to him over the years-- (he also tried to acquire Wilbur's letters to Octave Chanute that were in the possession of his daughters after his death.) Orville was apparently compiling his version of the early history of aviation.
The following letter is Dr. Spratt's response to Orville's request in its entirety. Those who are interested in truth in aviation history need to read this letter carefully:
Wilbur and Orville Wright Papers, Manuscript Division, Library of Congress, Washington, D.C.** |
Dr George Spratt's last letter to Orville Wright. Emphasis is mine. |
For much, much more about the Spratt/Wright saga and Dr. Spratt's contributions to the Wright flyers, go to this link: http://www.gustave-whitehead.com/history-of-whitehead-critics/wei%C3%9Fkopf-verkannter-erfinder-oder-scharlatan-gibbs-smith-luft-raumfahrt-jan-1982-pp-8/don-paulson-on-wright-spratt/
* I have been since informed that Orville admitted some twenty years later Spratt's and Huffaker's educating the Wrights about the movement of the center of pressure. I will have to research this.
**This letter can be found in "The Wilbur and Orville Wright Papers" under Series, General Correspondence, Items 214, Images 16 and 17.
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