Titre : | Etude des procédures de dcollage et d'atterrissage d'un convertible | Type de document : | thèse | Auteurs : | S. Diaz, Auteur ; J.-J., Invité Philippe, Autres ; Christian Kharif, Autres ; D., Dir. Favier, Directeur de thèse ; P., Rapp. Devinant, Rapporteur ; A., Resp. Onera Desopper, Autres ; B., Invité Demaret, Autres ; M., Rapp. Braza, Rapporteur ; E., Jury Berton, Autres ; C., Invité Serr, Autres | Année de publication : | 2004 | Importance : | 204 p. : ill. ; 30 cm | Note générale : | Thèse de doctorat
| Langues : | Français (fre) | Catégories : | Spécialité:Mécanique des fluides
| Résumé : | In the present study, a performance code is developed in order to simulate the take-off and landing procedures of a tiltrotor. This work is based on a performance code for helicopters EUROPA (EUropean ROtorcraft Performance Analysis), created during the European Project RESPECT (Rotorcraft Efficient and Safe ProcEdures for Critical Trajectories) that ended in 2000. The code is first adapted to the tiltrotor case by taking into account the main characteristics of the tiltrotor for motion in the longitudinal plane. They concern the geometry of the aircraft, the main aerodynamic interactions, and the controls adapted to the different flight configurations (helicopter, airplane and conversion). The code is then validated by another flight mechanics code partially validated by wind tunnel tests. A performance study is carried out to show the influence of the wing flap deflection on the tiltrotor performances for the different flight configurations and the necessity of introducing a wing flap deflection law to improve these performances. The construction of the conversion corridor allows both the analysis of the flight boundaries of the tiltrotor and the definition of some conversion strategies. Finally, some take-off and landing procedures are simulated thanks to the pilot model present in the code. Results illustrate the tiltrotor capability to perform manoeuvres with and without engine failure while respecting safety criteria, and also the benefits of using the nacelles tilting during certain manoeuvres. This part of the study includes the estimation of the take-off and landing critical points, and the safety speeds and altitudes.
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Etude des procédures de dcollage et d'atterrissage d'un convertible [thèse] / S. Diaz, Auteur ; J.-J., Invité Philippe, Autres ; Christian Kharif, Autres ; D., Dir. Favier, Directeur de thèse ; P., Rapp. Devinant, Rapporteur ; A., Resp. Onera Desopper, Autres ; B., Invité Demaret, Autres ; M., Rapp. Braza, Rapporteur ; E., Jury Berton, Autres ; C., Invité Serr, Autres . - 2004 . - 204 p. : ill. ; 30 cm. Thèse de doctorat
Langues : Français ( fre) Catégories : | Spécialité:Mécanique des fluides
| Résumé : | In the present study, a performance code is developed in order to simulate the take-off and landing procedures of a tiltrotor. This work is based on a performance code for helicopters EUROPA (EUropean ROtorcraft Performance Analysis), created during the European Project RESPECT (Rotorcraft Efficient and Safe ProcEdures for Critical Trajectories) that ended in 2000. The code is first adapted to the tiltrotor case by taking into account the main characteristics of the tiltrotor for motion in the longitudinal plane. They concern the geometry of the aircraft, the main aerodynamic interactions, and the controls adapted to the different flight configurations (helicopter, airplane and conversion). The code is then validated by another flight mechanics code partially validated by wind tunnel tests. A performance study is carried out to show the influence of the wing flap deflection on the tiltrotor performances for the different flight configurations and the necessity of introducing a wing flap deflection law to improve these performances. The construction of the conversion corridor allows both the analysis of the flight boundaries of the tiltrotor and the definition of some conversion strategies. Finally, some take-off and landing procedures are simulated thanks to the pilot model present in the code. Results illustrate the tiltrotor capability to perform manoeuvres with and without engine failure while respecting safety criteria, and also the benefits of using the nacelles tilting during certain manoeuvres. This part of the study includes the estimation of the take-off and landing critical points, and the safety speeds and altitudes.
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