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Les deux révisions précédentes Révision précédente Prochaine révision | Révision précédente | ||
public:modeles:rotor_74a2:accueil [2023/04/02 17:35] – [Natural frequencies] ikrambeghdadi | public:modeles:rotor_74a2:accueil [2023/04/28 12:44] (Version actuelle) – [Fréquences propres] solenekojtych | ||
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Compressor 74A is part of a research program to study fans and compressors for advanced airbreathing engines to assess and improve the technology needed for high pressure ratio, good efficiency, and adequate stall margin in as few stages as possible. This compressor consists of inlet guide vanes and five stages, and it is designed for a 9.271 pressure ratio. Rotor 74A2 is the rotor of the second stage of this compressor. | Compressor 74A is part of a research program to study fans and compressors for advanced airbreathing engines to assess and improve the technology needed for high pressure ratio, good efficiency, and adequate stall margin in as few stages as possible. This compressor consists of inlet guide vanes and five stages, and it is designed for a 9.271 pressure ratio. Rotor 74A2 is the rotor of the second stage of this compressor. | ||
- | * Original technical report [(cite: | + | * Original technical report [(cite: |
author | author | ||
date = {1986}, | date = {1986}, | ||
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</ | </ | ||
- | <fc #ff0000> | + | * Picture : |
- | | + | {{ : |
+ | <caption> | ||
+ | * < | ||
+ | author | ||
+ | title = {74A Compressor. {R}ecords of the {N}ational {A}eronautics and {S}pace {A}dministration, | ||
+ | year = {1978}, | ||
+ | url = {https:// | ||
+ | </code> | ||
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* [[https:// | * [[https:// | ||
* {{ : | * {{ : | ||
- | * {{ : | + | * {{ : |
</ | </ | ||
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==== Aerodynamic design | ==== Aerodynamic design | ||
- | ^ ^ | + | ^ ^ |
^ pressure ratio | [-] | 1.691 | | ^ pressure ratio | [-] | 1.691 | | ||
^ mass flow | ^ mass flow | ||
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- | Rotor 74A2 is made of titanium according to the NASA report, but the exact properties are not provided. | + | Rotor 74A2 is made of titanium according to the NASA report, but the exact properties are not provided. |
- | Considered properties: Ti-6Al-4V, generic titanium : | + | ^ |
- | + | ||
- | ^ | + | |
^ alloy | [-] | Ti-6Al-4V | ^ alloy | [-] | Ti-6Al-4V | ||
^ Young' | ^ Young' | ||
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First three natural frequencies (with clamped root) for the mesh computed with OpenMCAD[(cite: | First three natural frequencies (with clamped root) for the mesh computed with OpenMCAD[(cite: | ||
- | ^ Mode ^ Type ^ Natural angular frequency (rad/ | + | ^ Mode ^ Type ^ Natural angular frequency (rad/ |
- | | 1 | 1B | 4884.844 | + | | 1 |
- | | 2 | + | | 2 |
- | | 3 | 2B | 17870.82 | + | | 3 |
===== Initial blade ===== | ===== Initial blade ===== | ||
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* from the whole mesh: | * from the whole mesh: | ||
- | ^ Mode ^ Type ^ Natural angular frequency (rad/ | + | ^ Mode ^ Type ^ Natural angular frequency (rad/ |
- | | 1 | + | | 1 |
- | | 2 | + | | 2 |
- | | 3 | + | | 3 |
* from the reduced order model: | * from the reduced order model: | ||
- | ^ Mode ^ Type ^ Natural angular frequency (rad/ | + | ^ Mode ^ Type ^ Natural angular frequency (rad/ |
- | | 1 | + | | 1 |
- | | 2 | + | | 2 |
- | | 3 | + | | 3 |
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===== À propos ===== | ===== À propos ===== | ||
- | Le compresseur 74A fait partie d'un programme de recherche visant à étudier les soufflantes et les compresseurs pour les moteurs | + | Le compresseur 74A fait partie d'un programme de recherche visant à étudier les soufflantes et les compresseurs pour des moteurs |
- | * Rapport technique original [(cite: | + | * Rapport technique original [(cite: |
author | author | ||
date = {1986}, | date = {1986}, | ||
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} | } | ||
</ | </ | ||
- | <fc #ff0000> | ||
- | * Photographies</ | ||
+ | * Photographie : | ||
+ | {{ : | ||
+ | < | ||
+ | * < | ||
+ | author | ||
+ | title = {74A Compressor. {R}ecords of the {N}ational {A}eronautics and {S}pace {A}dministration, | ||
+ | year = {1978}, | ||
+ | url = {https:// | ||
+ | </ | ||
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* [[https:// | * [[https:// | ||
* {{ : | * {{ : | ||
- | * {{ : | + | * {{ : |
</ | </ | ||
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==== Propriétés matériau | ==== Propriétés matériau | ||
- | Le matériau du rotor 74A2 est le titane d' | + | Le matériau du rotor 74A2 est le titane d' |
- | Propriétés considérées : alliage Ti-6Al-4V | ||
^ | ^ | ||
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Fréquences des trois premiers modes (noeuds du pied d'aube encastrés) pour le maillage obtenu avec OpenMCAD[(cite: | Fréquences des trois premiers modes (noeuds du pied d'aube encastrés) pour le maillage obtenu avec OpenMCAD[(cite: | ||
- | ^ Mode ^ Type ^ Pulsation propre (rad/ | + | ^ Mode ^ Type ^ Pulsation propre (rad/ |
- | | 1 | + | | 1 |
- | | 2 | 1T | 15222, | + | | 2 | 1T | 15222, |
- | | 3 | + | | 3 |
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* pour le maillage complet : | * pour le maillage complet : | ||
- | ^ Mode ^ Type ^ Pulsation propre (rad/ | + | ^ Mode ^ Type ^ Pulsation propre (rad/ |
- | | 1 | + | | 1 |
- | | 2 | + | | 2 |
- | | 3 | + | | 3 |
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* pour le modèle réduit : | * pour le modèle réduit : | ||
- | ^ Mode ^ Type ^ Pulsation propre (rad/ | + | ^ Mode ^ Type ^ Pulsation propre (rad/ |
- | | 1 | + | | 1 |
- | | 2 | + | | 2 |
- | | 3 | + | | 3 |
- public/modeles/rotor_74a2/accueil.1680471358.txt.gz
- Dernière modification : 2023/04/05 08:59
- (modification externe)