F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
F04D 29/54 (2006.01)
Patent
CA 2738201
CLAIMS 1. 1. An axial flow machine having an asymmetrical air inlet and, downstream therefrom, a compressor having an inlet guide baffle composed of guide vanes, wherein at least some of the guide vanes of the inlet guide baffle having a vane profile and/or an angle of attack that deviate(s) from the remaining guide vanes; wherein a constant outflow angle is produced over the entire periphery by the inlet guide baffle. 2. The axial flow machine having an asymmetrical air inlet as recited in claim 1, wherein some or a plurality of the guide baffles following the inlet guide baffle have at least some guide vanes having a vane profile and/or an angle of attack that deviate(s) from the remaining guide vanes. 3. The axial flow machine having an asymmetrical air inlet as recited in claim 1 or 2, wherein individual guide vane groups have a vane profile and/or angles of attack that deviate(s) from the remaining guide vanes. 4. The axial flow machine having an asymmetrical air inlet as recited in claim 3, 7 wherein the guide vanes of the particular inlet guide vane groups have vane profiles and/or angles of attack that deviate from one another. 5. The axial flow machine having an asymmetrical air inlet as recited in one of claims 1 through 4, wherein all of the guide vanes are differently profiled and/or have a different angle of attack. 6. The axial flow machine having an asymmetrical air inlet as recited in claims 1 through 5, wherein the guide vanes have an adjustable design. 7. The axial flow machine having an asymmetrical air inlet as recited in claims 1 through 6, wherein the guide vanes are formed on the inlet side of a fixed component and, on the outlet side, of a pivoted component. 8. The axial flow machine having an asymmetrical air inlet as recited in claim 6 or 7, wherein one individual control is provided in each case for some or all of the guide vanes. 8
L'invention concerne un turbomoteur axial comportant une entrée d'air asymétrique et un compresseur placé derrière l'entrée d'air comprenant une grille de guidage d'entrée formée par des aubes fixes. L'invention est caractérisée en ce qu'au moins chaque aube de la grille de guidage d'entrée présente un profil d'aube différent de la technique antérieure et/ou un angle d'incidence différent. L'angle d'écoulement d'entrée homogénéise le premier étage du compresseur symétriquement au contour. A cet effet, différents angles d'amenée entraînés par l'asymétrie de l'amenée d'air peut influencer différentes positions de taille de la grille de guidage d'entrée grâce à un profilage ciblé et/ou une modification ciblée de l'angle d'incidence de chaque aube, de sorte qu'un angle d'écoulement symétrique à la taille peut être obtenu à partir de la couronne de guidage d'entrée. Les perturbations de taille provoquées par l'entrée d'air asymétrique peuvent être réduites et des conditions d'amenée symétriques à la taille peuvent être transmises au premier étage du compresseur, ce qui permet d'améliorer la stabilité et le rendement du compresseur.
Elorza Gomez Sergio
Halcoussis Alexander
Millman Ip
Mtu Aero Engines Gmbh
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