Emmanuel Dieuaide
Emmanuel Dieuaide was an engineer, patent agent, and helicopter inventor. As a French patent agent, he was recorded as being in Paris, at addresses rue de Banque, 18, and rue de Provence, 62.[1]. Dieuaide, made a powered helicopter model and well-known artworks depicting balloons.
Chanute (1894) summarizes his helicopter work thus, and cited Dieuaide's depictions of aircraft as a source of the diagrams in his own book:[2]
[In 1877,] M. Dieuaide, formerly Secretary of the French Aeronautical Society, and the well-known Engineer and Patent Attorney, whose clever chart has furnished (by permission) almost all the illustrations contained in these articles [made the model] shown in fig. 31. It consisted of two pairs of square vanes set at various angles to the line of motion, so as to vary the pitch, and rotated in contrary directions by gearing. The power was furnished by a double cylinder steam-engine connected with the boiler by a flexible hose, and the lifting power of the screws could be accurately weighed by simply putting the apparatus on a scale. [The results of the experiments seemed to show] that this double screw could not, in consequence of the losses of power due to the gearing, exert a lifting force greater than that of 26.4 lbs. per horse power."
(that is, it had counter-rotating propellers, as rephrased here: "In 1877, Emmanuel Dieuaide, a former secretary of the French Aeronautical Society, designed a helicopter with counter-rotating rotors. The engine boiler was on the ground and connected to the machine by a flexible tube." Source: Rumerman, Judy. "Early Helicopter Technology". Archived 20 February 2014 at the Wayback Machine Centennial of Flight Commission, 2003. [1]
<insert chart here> FIG. 31. -- DIEUAIDE -- 1877.
The meaning of "French Aeronautical Society" is not quite clear, there, but we should be able to find sources from the known aero societies to see which one he was an officer in.
A probably-reliable source says "Emmanuel Dieuaide's steam-powered design consisted of counter-rotating rotors driven through hoses from an above-ground boiler."
Another source indicates that it was an unmanned model, with the implication that it did actually fly.
Dieuaide made famous artworks depicting balloons: https://www.si.edu/object/tableau-daviation%3Anasm_A19680205000 and helicopters: https://sciencephotogallery.com/featured/three-early-helicopter-designs-science-photo-library.html
This person had 3 publications and 0 patents in this database.Publications by or about Emmanuel Dieuaide or Dieuaide
- Villeneuve, 1880, Le tableau d'aviation de M. Dieuaide (Simple title: The flying chart of M. Dieuaide, Journal: L'Aéronaute)
- Publication 3602, 1881, Tableau d'aviation représentant tout ce qui a été fait de remarquable sur la navigation aérienne sans ballons (Simple title: Aviation Chart representing everything that has been done remarkable about air navigation without balloons)
- Dieuaide, 1882, La catastrophe du 'Saladin' (Simple title: The disaster of 'Saladin', Journal: L'Aéronaute)
- Dieuaide, 1886, L'exposition aéronautique de Londres à Alexandra Palace en 1885 (Simple title: The London Air Show at Alexandra Palace in 1885, Journal: L'Aéronaute)
Patents for which Emmanuel Dieuaide or Dieuaide was the patent agent
- Patent FR-1883-145512E (Inventors: Jules Cezar Ribeiro de Souza, English title: cert of addition . . . system of aerial navigation by means of glider balloons, Supplementary to patent: Patent FR-1881-145512, Patent agent: Dieuaide)
- Patent FR-1882-148251 (Inventors: Phérékyde, English title: Improvements for aerial navigation, Patent agent: Dieuaide)
- Patent FR-1883-148251E (Inventors: Phérékyde, English title: Improvements for aerial navigation, Supplementary to patent: Patent FR-1882-148251, Patent agent: Dieuaide)
- Patent FR-1883-155789 (Inventors: Tassell, English title: system of aerial propulsion, Patent agent: Dieuaide)
- Patent FR-1880-139086 (Inventors: Frederick William Brearey, English title: aerial apparatus with undulating movements, Patent agent: Dieuaide)
- Patent FR-1880-139245 (Inventors: Barthélemi-Alfred Ellies, English title: New type of aerostat ('aéronave' is another variant of air-ship), Patent agent: Dieuaide)
- Patent FR-1881-145512 (Inventors: Jules Cezar Ribeiro de Souza, English title: system of aerial navigation by means of glider balloons, Patent agent: Dieuaide)
- Patent FR-1892-219528 (Inventors: Émile Veyrin, English title: Flying apparatus, Patent agent: Dieuaide)
References
Names Emmanuel Dieuaide Countries FR Locations Occupations engineer, patent agent Tech areas Helicopter, LTA Accreditations Affiliations French Aeronautical Society Family name Birth date Death date Wikidata id
