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1. WO2014159206 - LOW NOISE TURBINE FOR GEARED GAS TURBINE ENGINE

Publication Number WO/2014/159206
Publication Date 02.10.2014
International Application No. PCT/US2014/022512
International Filing Date 10.03.2014
IPC
F01D 1/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
1Non-positive-displacement machines or engines, e.g. steam turbines
02with stationary working-fluid guiding means and bladed or like rotor
CPC
F01D 15/12
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
15Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
12Combinations with mechanical gearing
F01D 17/105
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
17Regulating or controlling by varying flow
10Final actuators
105by passing part of the fluid
F01D 25/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
25Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
04Antivibration arrangements
F01D 5/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5Blades; Blade-carrying members
02Blade-carrying members, e.g. rotors
F01D 5/12
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5Blades; Blade-carrying members
12Blades
F01D 5/16
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5Blades; Blade-carrying members
12Blades
14Form or construction
16for counteracting blade vibration
Applicants
  • UNITED TECHNOLOGIES CORPORATION [US]/[US]
  • MTU AERO ENGINES AG [DE]/[DE]
Inventors
  • MORIN, Bruce, L.
  • KORTE, Detlef
Agents
  • COON, Benjamin J.
Priority Data
13/970,67020.08.2013US
61/781,17014.03.2013US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) LOW NOISE TURBINE FOR GEARED GAS TURBINE ENGINE
(FR) TURBINE PEU BRUYANTE POUR TURBINE À GAZ À ENGRENAGES
Abstract
(EN)
A gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, a turbine section including a fan drive turbine, a compressor section driven by the turbine section, a geared architecture driven by the fan drive turbine, and a fan driven by the fan drive turbine via the geared architecture. At least one stage of the turbine section includes an array of rotatable blades and an array of vanes. A ratio of the number of vanes to the number blades is greater than or equal to about 1.55. A mechanical tip rotational Mach number of the blades is configured to be greater than or equal to about 0.5 at an approach speed.
(FR)
La présente invention concerne une turbine à gaz qui selon un exemple illustratif comprend, entre autres choses, une section turbine comprenant une turbine d'entraînement de ventilateur, une section compresseur entraînée par la section turbine, une architecture d'engrenages entraînée par la turbine d'entraînement de ventilateur, et un ventilateur entraîné par la turbine d'entraînement de ventilateur au moyen de l'architecture d'engrenages. Au moins un étage de la section turbine comprend un réseau de pales rotatives et un réseau d'aubes. Le rapport du nombre d'aubes sur le nombre de pales est supérieur ou égal à environ 1,55. Un nombre de Mach de rotation mécanique des extrémités des pales est conçu pour être supérieur ou égal à environ 0,5 à une vitesse d'approche.
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