Man muß schon sachlich bleiben: (mT)

DT, Montag, 21.11.2022, 06:07 (vor 8 Tagen) @ Hannes1719 Views
bearbeitet von DT, Montag, 21.11.2022, 06:12

Selbst die US-Wikipedia spezifiziert:

"The Wright brothers, Orville Wright (August 19, 1871 – January 30, 1948) and Wilbur Wright (April 16, 1867 – May 30, 1912),[a] were American aviation pioneers generally credited[3][4][5] with inventing, building, and flying the world's first successful motor-operated airplane. They made the first controlled, sustained flight of a powered, heavier-than-air aircraft with the Wright Flyer on December 17, 1903, 4 mi (6 km) south of Kitty Hawk, North Carolina, at what is now known as Kill Devil Hills. The brothers were also the first to invent aircraft controls that made fixed-wing powered flight possible."

https://en.wikipedia.org/wiki/Wright_brothers

Auch im National Air and Space Museum (sowohl auf der Mall in Washington DC als auch im Udvar-Hazy-Center nahe des Dulles Airport in DC wird Otto Lilienthal sehr eindrücklich dargestellt.

Nicht nur ist dort einer seiner Original-Glider ausgestellt. Ich erinnere mich noch ganz genau daran, daß ich in dieser Ausstellung gelernt habe, wie seine Aerodynamischen Daten erst das Design des Wright Flyers ermöglicht haben. Ich war schwer beeindruckt davon, wieviele Details über statische und dynamische Drücke, Anströmgeschwindigkeiten, Reynolds-Zahlen etc. bei dem Design der Wright-Brothers Eingang fanden.

https://airandspace.si.edu/search?query_term=otto+lilienthal

https://airandspace.si.edu/collection-objects/lilienthal-glider/nasm_A19060001000

"The most significant pre-Wright brothers aeronautical experimenter was the German glider pioneer Otto Lilienthal. Between 1891 and 1896, he built and flew a series of highly successful full-size gliders. During this period, Lilienthal made close to 2,000 brief flights in 16 different designs based on aerodynamic research he conducted in the 1870s and 1880s. Like the example in the National Air and Space Museum collection, most were monoplanes with stabilizing tail surfaces mounted at the rear. Control was achieved by shifting body weight fore-and-aft and from side-to-side.

Beyond his technical contributions, he sparked aeronautical advancement from a psychological point of view, as well by unquestionably demonstrating that gliding flight was possible. He was a great inspiration to the Wright brothers in particular. They adopted his approach of glider experimentation and used his aerodynamic data as a starting point in their own research."


[image]

Ausstellungsobjekt:

One of Six Lilienthal Gliders Left in the World (1896)

Monoplane hang glider built by nineteenth-century German experimenter Otto Lilienthal in 1894. Single surface fabric covering over exposed framework. Wings fold for storage. Natural fabric finish; no sealant or paint of any kind.

PS: Die Wright-Brothers haben, aufbauend auf Otto Lilienthal, von 1900-1903 ausführliche Glider-Tests gemacht, um die Aerodynamik zu lernen.

"From 1900 until their first powered flights in late 1903, the brothers conducted extensive glider tests that also developed their skills as pilots."

Das erste Patent hat daher auch als Thema die aerodynamische 3-Achsensteuerung, die bis heute benutzt wird, anstatt die verstellten Flügel bzw. die Gewichtverlagerung, wie das ja bis heute Drachenflieger machen.


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