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Reverser having movable cascades, and translatably variable nozzle

A thrust reverser, reverse technology, used in sustainable transportation, jet propulsion, climate sustainability, etc., can solve the problem of the significant size of the thrust reverser cover and engine compartment, and reduce the overall length and weight. , the effect of reducing manufacturing costs

Inactive Publication Date: 2014-04-02
AIRCELLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] They also occupy a certain volume inside the thrust reverser cowl due to aerodynamic constraints, which leads to a significant size of the thrust reverser cowl and nacelle

Method used

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  • Reverser having movable cascades, and translatably variable nozzle
  • Reverser having movable cascades, and translatably variable nozzle
  • Reverser having movable cascades, and translatably variable nozzle

Examples

Experimental program
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Embodiment Construction

[0048] refer to figure 1 , the nacelle 1 is designed to constitute a tubular casing for a twin-flow turbojet and serves to guide the flow of air generated by the blades of the fan (not shown), that is, the flow of hot air through the combustion chamber and circulation outside the turbojet of cold air.

[0049] The nacelle 1 generally has a structure comprising an upstream section 3 forming the air intake, a fixed intermediate section 5, and a downstream section 7 surrounding the jet engine.

[0050] Said middle section 5 is a fixed part of the nacelle 1, formed by a fan case 9 and a front frame (not shown) comprising a fixed deflecting edge 11 for surrounding said turbojet engine ( Not shown) fan housing 13 provides an aerodynamic profile.

[0051] The downstream section 7 comprises a thrust reversal device 15 and an internal fairing structure 16 of the engine which, together with the thrust reversal device 15, delimits a flow path 17 designed for flow from the turbojet engine...

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PUM

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Abstract

The invention relates to a nacelle (1) for a turbojet engine, including a stationary portion (5) and a thrust reversal means (15), including: - a reverser cowl, the downstream portion of which forms an exhaust nozzle; cascades; thrust reversal flaps; and an actuation means. The thrust reversal means (15) translates, by means of the actuation means, between a position in which the reverser cowl is stowed, corresponding to a direct-jet operation of the nacelle, and a position in which the reverser cowl is deployed, corresponding to a reverse-jet operation of the nacelle (1). The nacelle (1) is characterized in that stretching the actuation means has the sole effect of causing a variation in the cross-section of the nozzle as long as the stretching is less than a predetermined value, and of uncovering the cascades and deploying the flaps after the predetermined value is exceeded.

Description

technical field [0001] The invention relates to a turbojet engine nacelle including thrust reversal means. Background technique [0002] The aircraft is powered by a number of turbojet engines housed in the nacelle. Said nacelle generally has a tubular structure comprising an air intake upstream of the turbojet engine, an intermediate section designed to surround the fan of the turbojet engine, housing thrust reversal means and designed to surround the combustion chamber of the turbojet engine chamber, and this nacelle usually ends with a nozzle located downstream of the turbojet engine. [0003] This nacelle is designed to house a twin-flow turbojet engine capable of using the rotation of the fan blades to generate a flow of hot air from the turbojet's combustion The flow of cold air that circulates outside a jet engine. [0004] During landing of the aircraft, said thrust reversal device is designed to improve the braking capability of the aircraft by redirecting at lea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K1/09F02K1/72
CPCY02T50/671F02K1/72F02K1/09Y02T50/60F02K1/32F02K1/566
Inventor 皮埃尔·卡吕埃勒皮特·塞加
Owner AIRCELLE