Alphonse Pénaud (1850–1880) was an aero inventor. His father, Charles-Eugène Pénaud, was an admiral in the French navy.
In the 1860s Pénaud created a simple hélicoptère using twisted rubber cords. This design quickly became popular. Pénaud then created an airplane model called a planophore which he demonstrated on 18 August 1871 (in the aftermath of the Franco-Prussian War and the Paris Commune). The planophore used a rod, a cambered wing, and a tail, powered by a propeller run, once again, by twisted rubber cords. It flew about 40 meters.
In 1874 Penaud designed a kite-balloon for meteorological and military purposes.
In 1883, the French Académie des Sciences shared a prize of 3,000 francs willed by Pénaud, recognizing those who had contributed to the progress of aviation. This sum was split between Gaston Tissandier, Duroy de Brignac (for mathematical work on an apparatus of mixed application), and Victor Tatin.
Patents whose inventor or applicant is Charles-Alphonse Pénaud
- Patent DE-1876-aq (English title: Man-carrying flying apparatus)
- Patent FR-1876-111574 (English title: Aeroplane or flying aerial apparatus)
- Lippert, 1888, Berichtigung: Ueber Arbeitsökonomie in der Flugbewegung (Simple title: Correction: On work-efficiency in aerial movement, Journal: Zeitschr. Luftsch.)
|Names||Charles-Alphonse Pénaud; Alphonse Pénaud|
|Tech areas||helicopter, kite-balloon, suspension|
- Hallion, 2003, p. 121.
- Dollfus & Bouché, 1942, Histoire de l'aéronautique, p. 124.