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Aircraft Performance modeling The main goal of an aircraft performance model is to predict with a certain level of accuracy the actual aircraft and engine performance. The word “performance” in this context refers mainly to flight parameters describing the aircraft...
The concept of morphing does not have a stable definition, other than it refers to modifications of shapes - multi-purpose or stand-alone - for the purpose of improving the performances of the object to be morphed. The Defense Advanced Research...
DME Présentation du DME Le DME (Distance Measuring Equipment), est une aide radioélectrique destinée à donner, en lecture directe à bord de l’avion, la distance oblique entre un avion et une station au sol dûment sélectionnée et identifiée (transpondeur sol)....
La spectrométrie infrarouge : un outil pour la prédiction des constituants minéraux des sols tropicaux In highly weathered tropical soils, the dominant residual minerals, i.e. kaolinite, gibbsite, hematite and goethite, play a key role with organic matter, in soil behaviour...
Climatologies et tendances observées Dans le cadre de l’infrastructure de recherche IAGOS (In-service aircraft for a global ob- serving system ; http://www.iagos.org), l’ozone (O3) et le monoxyde de carbone (CO) font l’objet de mesures de routine – respectivement depuis 1994...
L’impact du streamer de bleu jet sur la chimie stratosphérique Transient Luminous Events (TLEs) The TLE family includes high-altitude lightning flashes and large-scale optical events that last for less than a second (Figure 1-5). Although eyewitness reports of TLEs above...
Incertitudes On vient de voir que les modèles utilisés pour la commande robuste se constituent d’un modèle nominal G(s) et d’un modèle pour les incertitudes ∆(s). Le modèle mis en place traduit les relations existantes entre les commandes et les...
Assimilation de données satellitaires et inversion de sources pour l’étude de la composition chimique atmosphérique Human activities are at the origin of emissions of polluted gases that can perturb the chemical com- position of the atmosphere and the climate. The...
Application au transfert radiatif Abstract This paper presents radiative transfer calculations performed over Niamey in the UV-Visible range over the period 26th January – 1st February 2006 during the African Multidisciplinary Monsoon Analysis (AMMA) international program. Climatic effects of aerosols...
Knowledge Discovery in Biological Data Optimisation and Metaheuristics The optimisation problem is a kind of problems where an exact solution can't be found in reasonable time (Kann 1992). Optimisation is everywhere, such as aeronautics, biology, and economy. Optimisation has been...