Ducted fan turbine engine
First Claim
1. A ducted fan turbine engine comprising a central engine provided with a housing encompassed by a gas generator compartment externally delimited by an intermediate ring, a fan duct delimited between the intermediate ring and an outer ring, the intermediate ring comprising two articulated caps with a C-shaped section allowing for access to be gained to the central engine, and means for moving said caps, wherein each of said caps is connected to the housing of the engine by said moving means so that each of said caps can be displaced between a closed position whereby a front end portion of said cap is located within said outer ring, and a rear intermediate position whereby said cap is fully displaced beyond a rear edge of said outer ring, each of said caps being mounted on said moving means so that said caps can be rotated between said rear intermediate position and an open position, said caps being rotated about an axis substantially parallel to a longitudinal axis o the ducted fan turbine engine.
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Accused Products
Abstract
Inside a ducted fan turbine engine, especially one with a high or very high bypass dilution ratio, access to the gas generator compartment of the engine is effected by means of two articulated caps (34) with a C-shaped section. The upper edge of each cap (34) is connected to the fixed structure of the jet engine by means of a series of articulated arms (36) and a telescopic link (54) is inserted between the housing of the engine and the bottom of each cap. In a first stage (arrow F1), this mechanism enables the caps (34) to be brought beyond the rear edge of the outer ring (12) of the jet engine, the links (54) being locked in a compressed position. In a second stage, the caps (34) uncoupled from the ring (12) are able to pivot from the desired angle (arrow F2) around an axis (y-y'"'"') parallel to the axis (x-x'"'"') of the ducted fan turbine engine.
51 Citations
11 Claims
- 1. A ducted fan turbine engine comprising a central engine provided with a housing encompassed by a gas generator compartment externally delimited by an intermediate ring, a fan duct delimited between the intermediate ring and an outer ring, the intermediate ring comprising two articulated caps with a C-shaped section allowing for access to be gained to the central engine, and means for moving said caps, wherein each of said caps is connected to the housing of the engine by said moving means so that each of said caps can be displaced between a closed position whereby a front end portion of said cap is located within said outer ring, and a rear intermediate position whereby said cap is fully displaced beyond a rear edge of said outer ring, each of said caps being mounted on said moving means so that said caps can be rotated between said rear intermediate position and an open position, said caps being rotated about an axis substantially parallel to a longitudinal axis o the ducted fan turbine engine.
- 4. A ducted fan turbine engine comprising a central engine provided with a housing encompassed by a gas generator compartment externally delimited by an intermediate ring and fan duct delimited between the intermediate ring and an outer ring, the intermediate ring comprising two articulated caps with a C-shaped section allowing for access to be gained to the central engine, wherein each of the caps is joined onto the housing of the engine by means of a mechanism allowing this cap to move between a closed position, a rear intermediate position in which the cap is fully situated beyond a rear edge of the outer ring, and an open position, each mechanism including at least two axially spaced arms, one extremity of each arm being joined onto a beam integral with the housing and extending parallel to a longitudinal axis of the ducted fan turbine engine around a first spindle orthogonal to this axis, the opposite extremity of each arm being joined onto an intermediate part by a second spindle parallel to the first spindle, this intermediate part itself being joined onto the cap in the proximity of a first extremity of the C formed into a section by the latter by a third spindle parallel to said longitudinal axis.
Specification