Nick (biglebowsky) wrote,
Nick
biglebowsky

Аэродинамика

В недрах своего компьютера нашел ссылку на очень хорошие фотографии обтекания крыльевого профиля, причем автор одной из них - тот самый Alexander Lippish (!!!)
http://amasci.com/wing/airgif2.html




Actual windtunnel photograph of air flowing around a wing. Pulsed smoke streams illustrate that the parcels of air which are divided by the leading edge DO NOT recombine at the trailing edge. Therefor the "wing shape" explanation of lifting force falls apart.

(This image was made by late Aerodynamicist Alexander Lippish, The German Me-163 creator, at Collins Radio windtunnels, USA, in 1953. It was published in his book. Alexander Lippish was an expert on smoke in windtunnels and his smoketrails were world-famous.)


12.73 КБ

This image is made by Aerodynamist Martin-Ingelman Sundberg at KTH windtunnels in 1992. Sundberg, who first saw syncronized smokepulses when visiting a windtunnel maker in USA 1962, made this smokepulse video to show how ICAO pilot education was wrong in explaining winglift with "airflow longer path over wing"



Update 9 Oct 2011
Решил добавить компьютерную анимацию, чтобы было понятно, что именно на картинках изображено.

435.38 КБ

Воздуху требуется РАЗНОЕ время, чтобы пролететь сверху и снизу крыла, "частички" воздуха, разошедшиеся перед передней кромкой, вовсе не собираются встретиться у задней кромки.
Tags: aerodynamics, physics
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