Henri Deslandres
Henri Alexandre Deslandres was director of the Observatoire de Meudon and taught at the École Supérieure d’Aéronautique et de Construction Mécanique when it opened in 1909. His most direct published contribution to aeronautics seems to be a technique for determining the speed of an aircraft.
Deslandres started his career in the army but in 1881 left to pursue academic work in science; he worked at the physics laboratory of the École polytechnique.[1] His focus was apparently optics, light, photography, etc., and in 1894 he invented a spectroheliograph for photographing the Sun.[2]
Deslandres returned to the military during World War I and served as Colonel in the Engineers, during which time he was known for developing a "canon d'accompagnement" apparently to be used in conjunction with an infantry advance.[3][4]
Publications by or about Henri Deslandres
- Espitallier, 1902, Die Methode von Henri Deslandres zur Bestimmung der Bahn und Geschwindigkeit eines lenkbaren Ballons (Simple title: The method of Henri Deslandres to determine the orbit and speed of a steerable balloon, Journal: Ill. Aër. Mitt.)
Publications by or about H. Deslandres
- Deslandres, 1901, Méthode permettant de déterminer la vitesse propre des aèrostats dirigeables. Application aux expériences de M. Santos-Dumont (Simple title: Method for determining the inherent speed of airships. Application to the experiments of Mr. Santos-Dumont, Journal: C. R. Acad. Sci.)
- Deslandres, 1902, Détermination de la trajectoire exacte des aérostats par rapport au sol (Simple title: Determination of the exact trajectory of aerostats in relation to the ground, Journal: C. R. Acad. Sci.)
References
- ↑ Frederick John Marrian Stratton, "Henri Alexandre Deslandres, 1853-1948", November 1954.
- ↑ "Henri-Alexandre Deslandres", Encyclopedia Brittanica, 1998; accessed 12 April 2019.
- ↑ F. J. M. Stratton, "bituary Notices: Deslandres, Henri Alexandre", Monthly Notices of the Royal Astronomical Society, Vol. 109, p.141, no. 2, 1949.
- ↑ Other incidental sources mentioning the cannon: [1], [2], [3], [4] – le «Jouhandeau-Deslandre».
Links
| Names | Henri-Alexandre Deslandres |
|---|---|
| Birth date | 1853-07-24 |
| Death date | 1948-01-15 |
| Countries | FR |
| Locations | Paris |
| Occupations | military officer, scientist, professor |
| Tech areas | Astronomy, physics, Photography |
| Affiliations | Observatoire de Meudon, École Supérieure d’Aéronautique et de Construction Mécanique, Paris Observatory, Académie des Sciences, Royal Astronomical Society |
| Wikidata id |
