Nacelle for an aircraft engine, comprising means for preventing deformation of a hinged fan cover
阅读说明:本技术 用于飞行器发动机的发动机短舱,包括防止铰接的风机盖变形的装置 (Nacelle for an aircraft engine, comprising means for preventing deformation of a hinged fan cover ) 是由 A·波特 G·阿尔贝特 J·森蒂尔 于 2019-09-04 设计创作,主要内容包括:一种用于飞机发动机(10)的发动机短舱(14),包括固定结构、安装在固定结构上的中心盖(22)、安装在中心盖(22)上并在打开位置和关闭位置之间铰接至中心盖(22)的风机盖(20)以及分布在每个风机盖(20)和固定结构之间的锁定装置(100),设计为呈现锁定位置和解锁位置,以将风机盖(20)锁定到固定结构和不将风机盖(20)锁定到固定结构,其中,仅当风机盖(20)处于关闭位置中时,可以采用锁定位置,而无论风机盖(20)处于打开位置还是关闭位置中,都可以采用解锁位置,并且其中,锁定装置(100)通过围绕发动机短舱(14)的纵向轴线转动而被锁定和解锁。因此,锁定装置防止风机盖在飞行中变形。(An engine nacelle (14) for an aircraft engine (10), comprising a fixed structure, a central cover (22) mounted on the fixed structure, fan covers (20) mounted on the central cover (22) and hinged to the central cover (22) between an open position and a closed position, and locking devices (100) distributed between each fan cover (20) and the fixed structure, designed to assume a locked position and an unlocked position, to lock the blower cover (20) to the fixed structure and not to lock the blower cover (20) to the fixed structure, wherein the locked position can be adopted only when the blower cover (20) is in the closed position, the unlocking position can be adopted no matter the fan cover (20) is in the opening position or the closing position, and wherein the locking device (100) is locked and unlocked by rotation about a longitudinal axis of the nacelle (14). Thus, the locking device prevents the blower cover from deforming in flight.)
1. An engine nacelle (14) for an aircraft engine (10), the engine nacelle (14) comprising:
-a fixed structure (42),
-a central cover (22) mounted on said fixed structure (42),
-at least one fan cover (20) mounted on the central cover (22) and hinged to the central cover (22) between an open position and a closed position, and
-a locking device (100, 200) distributed between each of the blower covers (20) and the fixed structure (42) and designed to assume a locking position, in which it locks the blower cover (20) to the fixed structure (42), and an unlocking position, in which it does not lock the blower cover (20) to the fixed structure (42), wherein the locking device (100, 200) is locked and unlocked by rotation about the longitudinal axis of the engine nacelle (14).
2. An engine nacelle (14) as claimed in claim 1, wherein the locking device (100) comprises:
-a track (102),
-a plurality of guides (104), each guide (104) being fastened to the fixed structure (42) and having a through hole (105) for the passage of the rail (102),
-a plurality of male members (106) or a plurality of female members, each of said members being fastened to the rail (102) and having an axis which is generally parallel to the tangential direction of the rail at the fixing point of the member (106),
-for each of said male (106) or female (108) members a bracket (108) is fastened to the blower cover (20) and has a female (110) or male member which is coaxial with the male (106) or female member in the closed and locked position, and
-an activation system (112) designed to move the rail (102) from an unlocked position, in which no male component is introduced into the female component, to a locked position, in which each male component is introduced into the female component; and vice versa.
3. An engine nacelle (14) as claimed in claim 1, wherein the fixed structure (42) comprises at least one guide rail (204), the central cover (22) comprises, for each guide rail (204), a slide (206) designed to translate with respect to the guide rail (204), and the locking device (200) comprises:
-a plurality of male (212) or female members, each member being fastened to the blower cover (20) and having an axis generally parallel to a tangential direction of the blower cover (20) at a fixing point of the member (212),
-for each said male (212) or female (202) or male member, wherein each said female or male member is fastened to the fixing structure (42) and is coaxial with the male (212) or female member in the closed and locked position, and
-an activation system designed to move the central cover (22) and the blower cover (20) from an unlocked position, in which no male member is introduced into the female member, to a locked position, in which each male member is introduced into the female member; and vice versa.
4. A propulsion system comprising an engine and an engine nacelle (14) as claimed in any one of the preceding claims.
5. An aircraft (10) comprising a propulsion system as claimed in the preceding claim.
Technical Field
The present invention relates to an engine nacelle for an aircraft engine, comprising means for preventing deformation of a hinged fan cover; the invention also relates to a propulsion system comprising an aircraft engine and an engine nacelle of this type, and to an aircraft comprising at least one such propulsion system.
Background
The engine nacelle of an aircraft engine constitutes the outer skin of the engine and forms an aerodynamic surface ensuring a good air flow around the engine.
FIG. 6 shows a front half view of a
The
Thus, the
To prevent these deformations from occurring, the structure of the
Disclosure of Invention
The object of the present invention is to propose an engine nacelle for an aircraft engine, wherein the engine nacelle comprises means for preventing deformation of a hinged fan cover.
To this end, an engine nacelle for an aircraft engine is proposed, comprising:
-a fixed structure for fixing the device to a fixed structure,
-a central cover mounted on the fixed structure,
-at least one fan cover is mounted on the central cover and is hinged to the central cover between an open position and a closed position, and
locking means which are distributed between each blower cover and the fixed structure and which are designed to assume a locking position in which they lock the blower cover to the fixed structure and an unlocking position in which they do not lock the blower cover to the fixed structure, wherein the locking means are locked and unlocked by rotation about the longitudinal axis of the nacelle.
Thus, the locking device prevents the blower cover from deforming in flight.
According to a particular embodiment, the locking device comprises:
-a track of the object,
a plurality of guides, each guide being fastened to the fixed structure and having a through hole for the passage of the rail,
a plurality of male or female members, each member being fastened to the rail and having an axis generally parallel to the tangential direction of the rail at the fixing point of said member,
for each male or female member, a bracket is fastened to the blower cover and has a female or male member which is coaxial with said male or female member in the closed and locked position, and
-an activation system designed to move the track from an unlocked position, in which no male component is introduced into the female component, to a locked position, in which each male component is introduced into the female component; and vice versa.
According to a particular embodiment, the fixed structure comprises at least one guide rail, the central cover comprises, for each guide rail, a slide designed to move in translation with respect to said guide rail, and the locking means comprise:
a plurality of male or female members, each fastened to the blower cover and having an axis generally parallel to the tangential direction of the blower cover at the fixing point of said members,
-for each male or female component, for the female or male component, each component is fastened to a fixed structure and it is coaxial with said male or female component in the closed and locked position, and
-an activation system designed to move the central cover and the fan cover from an unlocked position, in which no male member is introduced into the female member, to a locked position, in which each male member is introduced into the female member; and vice versa.
The invention also proposes a propulsion system comprising an engine and a nacelle according to any of the variants described above.
The invention also proposes an aircraft comprising a propulsion system according to the preceding claim.
Drawings
The above mentioned features and other features of the present invention will become more apparent upon reading the following description of an embodiment thereof, given with reference to the accompanying drawings, in which:
FIG. 1 is a side view of an aircraft according to the present invention;
FIG. 2 is a partial front perspective view of the nacelle according to the first embodiment of the invention;
figure 3 is a partial perspective view of the engine nacelle shown in figure 2,
fig. 4 is a view in the direction of arrow IV in fig. 3;
FIG. 5 is a perspective view of an engine nacelle according to a second embodiment of the invention; and
FIG. 6 is a front view of a prior art engine nacelle.
Detailed Description
In the following description, the position-related terms refer to the aircraft in a forward-moving position, that is to say as shown in fig. 1.
Fig. 1 shows an
Throughout the following description, by convention, the direction X corresponds to the longitudinal direction of the engine, which is parallel to the longitudinal axis X of the nacelle of the engine. Likewise, direction Y corresponds to a direction oriented transversely with respect to the engine, while direction Z corresponds to a vertical or elevation direction, these three directions X, Y, Z being mutually orthogonal.
The
The
The
FIG. 2 shows the
The
The
In the locked position, the
The locked position can be assumed only when the
The difference between the first and second embodiments is mainly related to the
Fig. 3 shows the
In the first embodiment of the present invention, the
In the first embodiment of the present invention, the
-a
a plurality of
a plurality of
for each
an
The overall motion of the
Thus, depending on the direction of movement of the
Of course, the male (male) and female (female) functions may be interchanged between the
The
In the first embodiment of the invention there is a
There are a plurality of
Fig. 5 shows a second embodiment of the invention, in which the
The fixed
The fixed
According to a particular embodiment, each
The
Each
The
a plurality of
for each
An activation system designed to move the
All of the
Here, the fixed
Starting from the closed and locked position, i.e. when the
Movement in the opposite direction can return to the closed and locked position.
In the same way, the male (male) function and the female (female) function can be interchanged between the