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Aircraft comprising turbine engine incorporated into the rear fuselage comprising system for blocking the fans

A turbine engine and aircraft technology, applied in the field of aircraft, can solve problems such as loss of blades and imbalance

Active Publication Date: 2018-03-27
SAFRAN AIRCRAFT ENGINES SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the possibility of one of the fans failing, eg becoming unbalanced or even losing blades must be taken into account

Method used

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  • Aircraft comprising turbine engine incorporated into the rear fuselage comprising system for blocking the fans
  • Aircraft comprising turbine engine incorporated into the rear fuselage comprising system for blocking the fans
  • Aircraft comprising turbine engine incorporated into the rear fuselage comprising system for blocking the fans

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Embodiment Construction

[0027] The invention is particularly applicable to aircraft such as aircraft, including figure 1 Aircraft with turbine engines of the type indicated.

[0028] Such as figure 1 As shown, the turbine engine is centered on the longitudinal axis XX of the fuselage 1 of the aircraft. Said turbine engine comprises, from upstream to downstream in the direction of gas flow, two individual gas generators 2a, 2b which simultaneously feed a single power turbine 3 . The turbine engine is mounted at the downstream end of the fuselage 1 of the aircraft.

[0029] In a manner known per se, each gas generator 2a, 2b comprises at least a compressor, a combustion chamber and a turbine (not shown in the figures).

[0030] In this document, the terms axial and radial refer to the axis XX of the fuselage and of the turbine engine. Likewise, the terms upstream and downstream refer to the main direction of flow along said axis.

[0031] Each gas generator 2a, 2b is received inside a main duct 3a...

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Abstract

The invention concerns an aircraft comprising a fuselage (1) and propelled by a turbine engine having two coaxial and contrarotating fans (7, 8), and the turbine engine comprises a power turbine (3) having two contrarotating rotors one of which (5) drives a fan (7) upstream from the turbine (3), the other (6) drives a fan (8) downstream from the turbine (3). Each fan comprises a ring of blades, and the assembly of the fans (7, 8) and the power turbine (3) are incorporated at the rear of the fuselage (1), in the extension of same. The aircraft is characterized in that it comprises, for at leastone of the fans (7, 8), a device (28, 27) for blocking the rotation of the fan (7, 8) and means (33, 17) configured to modify the pitch of the blades of said fan (7, 8) in such a way to make it operate as a flow straightener with respect to the other fan.

Description

technical field [0001] The invention relates to the field of aircraft such as aircraft, in particular commercial aircraft, propelled by a turbine engine having a counter-rotating fan integrated in the downstream extension of the fuselage. The invention relates more particularly to a device for adjusting the blower of a turbine engine of this type of architecture for specific operating situations that must be taken into account for safety reasons. Background technique [0002] FR-A1-2 997 681 proposes a new aircraft architecture that makes it possible to reduce the noise pollution and fuel consumption of aircraft by absorbing the boundary layer and thus limiting the aerodynamic drag. [0003] In this architecture, the aircraft is propelled by a turbine engine with ducted counter-rotating fans integrated in the rear of the aircraft's fuselage. Typically, a turbine engine comprises two gas generators feeding a power turbine with two counter-rotating rotors for driving two fans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K3/065F01D21/06F02K3/072
CPCF01D21/06F02K3/072F01D17/16B64C11/325F01D17/167B64C11/002F01D1/24F01D1/023B64C11/385F01D17/14F01D17/162B64C11/306B64D27/14B64D29/04B64D27/20F02K3/12
Inventor 弗朗索瓦·加莱特
Owner SAFRAN AIRCRAFT ENGINES SAS
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