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Turbine module for propeller with variable pitch blades and turbine comprising module

A technology of propellers and turbines, applied in the field of pitch mechanism, to achieve a good effect of relative error

Pending Publication Date: 2022-03-11
SAFRAN AIRCRAFT ENGINES SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Known systems present various problems of overall size, complexity of regulation or, especially in the case of hydraulic actuators, the delivery of energy to the various actuators

Method used

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  • Turbine module for propeller with variable pitch blades and turbine comprising module
  • Turbine module for propeller with variable pitch blades and turbine comprising module
  • Turbine module for propeller with variable pitch blades and turbine comprising module

Examples

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Embodiment Construction

[0039] figure 1 A general view is shown of an embodiment of a device 1 according to the invention, which is rotatably driven about the longitudinal axis X of the turbine by means of a shaft 2 extending from an engine part (not shown). The shaft 2 itself is rotatably guided on the stationary housing 3 of the turbine by means of bearings 4 . The propeller is placed in front of the engine. The blades 5 of the propeller are rotatably driven about a longitudinal axis X and are designed to each have a variable pitch about a radial axis Y with which the propeller rotates. The cover 6 isolates the device itself from the airflow in which the blades 5 of the propeller work.

[0040] The device 1 comprises a trunnion 7 centred on the longitudinal axis X which connects the shaft 2 to the hub 8 of the propeller which supports the blades 5 . The trunnion 7 includes a substantially cylindrical central portion 7a fitted to the shaft 2 . The connection piece 9 is made of splines, which ena...

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Abstract

The invention relates to a turbine module (1) comprising:-a rotating housing (7-8) supporting a propeller provided with a plurality of blades (5),-a system for varying the pitch of the blades (5) of the propeller, comprising a control device and a mechanism for varying the pitch of the blades of the propeller, characterized in that: the rotating housing (7-8) supports the propeller provided with the plurality of blades (5); the system is supported by a rotating housing (7-8), where the control means comprise an annular row of rotating actuators (16), and where the mechanism for varying the pitch of the blades comprises a synchronizing ring (11) which is rotationally driven by rotating output shafts (17) of the actuators (16), which synchronizing ring (11) is rotationally guided relative to the rotating housing (7-8) by means of guiding means, and the first teeth (13) are meshed with the pinions (14) of the blades (5).

Description

technical field [0001] The present invention relates to a variable pitch propeller for a turbomachine, whether the rotor is shrouded or not. The present invention focuses more specifically on the mechanism for controlling the pitch of the blades of these propellers. Background technique [0002] The background art includes documents US10288087B2 and US8371105B2 in particular. [0003] It is known that the bypass ratio of the twin-flow engine is increased in order to increase the propulsion efficiency of the twin-flow engine and reduce the specific consumption of the twin-flow engine, regardless of whether the twin-flow engine is of the turboprop type or has a shroudless propeller. This feature makes it possible to increase the bypass ratio of the engine, but also has the ability to work at reduced fan or propeller speeds to reduce the engine's compression ratio and thus create aerodynamic instabilities, such as reducing pumping margins shortcoming. [0004] One solution t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C11/06B64C11/44F01D7/00F04D29/36
CPCB64C11/06B64C11/44F01D7/00F04D29/323F05D2260/74F05D2260/79F05D2270/46Y02T50/60F02K3/06F05D2220/323
Inventor 克莱门特·柯泰特蒂埃里·乔治·保罗·帕潘里吉斯·尤金·亨里·赛文特
Owner SAFRAN AIRCRAFT ENGINES SAS
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