Badin defined the first IFR control panel in 1922, which they called the "Contrôleur de vol Badin" (en: Badin flight controller). The following year it was... 5 KB (390 words) - 10:24, 24 June 2022 |
Chappe was born in Brûlon, Sarthe, France, the son of Ignace Chappe, a contrôleur (intendant) of the Crown lands for Laval, and his wife Marie Devernay... 10 KB (1,094 words) - 20:08, 19 October 2023 |