Aeroengine nacelle

• US 20040238687A1
• Filed: 10/31/2003
• Published: 12/02/2004
• Est. Priority Date: 06/02/2003
• Status: Active Grant

• Current Assignee: Rolls-Royce PLC (Rolls-Royce Holdings Plc)
• Original Assignee: Rolls-Royce PLC (Rolls-Royce Holdings Plc)
• Inventors: Stretton, Richard G., Jones, Emlyn
• Granted Patent: US 7,090,165 B2
• Time in Patent Office: Days
• US Class Current: 244/62
• CPC Class Codes: B64D 29/08 Inspection panels for power plants
• CPC Class Codes: F01D 25/002 Cleaning of turbomachines
• CPC Class Codes: F01D 5/005 Repairing methods or devices
• CPC Class Codes: F02C 7/00 Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants controlling F02C9/00
• CPC Class Codes: F02C 7/32 Arrangement, mounting, or driving, of auxiliaries
• CPC Class Codes: F02K 1/64 Reversing fan flow
• CPC Class Codes: F05D 2230/80 Repairing, retrofitting or upgrading methods
• CPC Class Codes: Y02T 50/60 Efficient propulsion technologies, e.g. for aircraft

Abstract

A nacelle (55) for a gas turbine engine (10), the engine (10) comprising accessories (34) mounted to a fan casing (28) and a core engine (9), the nacelle (55) substantially surrounds the engine (10) and comprises an intake (12) and a thrust reverser unit (31). The thrust reverser unit (31) is formed by two generally C-shaped portions (31a, 31b). The thrust reverser unit (31) is openable to provide access to the accessories (34) and the core engine (9). The nacelle (55) further comprises a fan containment casing (33) that is integral with the intake (12).

Claims

1. A nacelle for a gas turbine engine, the engine comprising accessories mounted to a fan casing and a core engine, the nacelle substantially surrounds the engine (10) and comprises an intake and a thrust reverser unit, the thrust reverser unit is formed by two generally C-shaped and openable portions characterised in that the thrust reverser unit is openable to provide access to the accessories and the core engine.

2. A nacelle as claimed in claim 1 wherein the nacelle comprises a fan containment casing, the fan containment casing is integral with the intake.

3. A nacelle as claimed in claim 2 wherein the intake comprises an acoustic panel that extend between a downstream edge of the fan containment casing and a leading edge of the intake, thus reducing engine-generated noise.

4. A nacelle as claimed in claim 2 wherein the fan containment casing is disposed outside a fire zone of the nacelle.

5. A nacelle as claimed in claim 2 wherein the fan containment casing is releasably attached to the intake and the fan casing.

6. A nacelle as claimed in claim 5 wherein at least one access panel is provided radially outwardly of the fan containment casing to allow access thereto.

7. A nacelle as claimed in claim 1 wherein at least one access door is provided in the C-shaped portions radially outward of the fan casing to allow access thereto.

8. A nacelle as claimed in claim 7 wherein at least one access door is pivoatbly attached to the C-shaped portions and is openable only when the C-shaped portions are closed.