Aircraft painting installation comprising a paint booth with a reduced cross-section and at least one optimized ventilation and air extraction system

Abstract

Aircraft painting installation comprising a paint booth with reduced cross-section and at least one optimized ventilation and air extraction system. The invention relates to a painting installation, adapted for painting an aircraft fuselage (12), comprising: a paint booth (20) configured to contain the fuselage (12), positioned on a platform (S), which extends between the first and second ends and has a tunnel shape of length greater than or equal to that of the fuselage (12) and of width less than three times that of the fuselage (12),as well as at least one ventilation and extraction system comprising at least one ventilation outlet (30) configured to inject a gas into the paint booth (20) and positioned at a first zone of the paint booth (20), and at least one extraction outlet (32) configured to extract a gas present in the paint booth (20) and positioned at a second zone of the paint booth (20) opposite the first zone. Figure 5,

Description

Title of the invention: Aircraft painting installation comprising a paint booth of reduced cross-section and at least one optimized ventilation and air extraction system

[0001] The present application relates to an aircraft painting installation comprising a paint booth of reduced cross-section and at least one optimized ventilation and air extraction system.

[0002] According to one embodiment, an aircraft comprises a fuselage, wings arranged on either side of the fuselage and a tail positioned at the rear tip of the fuselage.

[0003] Once assembled, the aircraft is positioned in a substantially parallelepiped painting building sized to contain the aircraft for sanding and then painting. Given the dimensions of the empennage and wings, the ceiling and side walls of the building are distant from the fuselage.

[0004] The aircraft sanding operation generates fine particles that remain in suspension around the aircraft and / or are deposited on the ground, the surfaces of the aircraft and / or the building. During the painting operation, these fine particles can become suspended again and be deposited on the freshly painted surfaces of the aircraft. At the same time, since the paint is applied by spraying onto the surfaces of the aircraft, some of this sprayed paint is not deposited on the surfaces of the aircraft and generates a cloud of paint that is deposited and dries on the ceiling and walls of the painting building. Over time, particles can become detached from these layers of dry paint deposited on the walls and ceiling. These particles of dry paint can then be deposited on the freshly painted surfaces and degrade the quality of the painted coating on the aircraft.

[0005] To limit the deposition of paint on the walls and ceiling of the painting building, the latter is equipped with at least one ventilation and extraction system comprising at least one ventilation outlet configured to inject a flow of air into the painting building and an extraction outlet configured to extract the air present in the painting building. Given the large dimensions of the painting building, the ventilation and extraction outlets are far from each other so that the extraction of suspended paint particles is not optimal.

[0006] The present invention aims to remedy all or part of the drawbacks of the prior art.

[0007] To this end, the invention relates to a painting installation suitable for painting an aircraft fuselage, said painting installation comprising a platform as well as at least one ventilation and extraction system comprising at least one ventilation outlet positioned at a first zone as well as at least one extraction outlet positioned at a second zone opposite the first zone.

[0008] According to the invention, the painting installation comprises a painting booth, positioned on the platform, which extends between first and second ends and has a tunnel shape of length greater than or equal to that of the fuselage and of width less than three times that of the fuselage, each ventilation outlet being configured to inject a gas into the painting booth, each extraction outlet being configured to extract a gas present in the painting booth.

[0009] Combining a paint booth with small sections adjusted to those of the fuselage and a ventilation and extraction system makes it possible to obtain laminar flows around the fuselage, which prevents paint particles from remaining in suspension and limits the phenomena of paint particle deposition on the walls of the paint booth and subsequently the detachment of particles likely to become embedded in the fresh paint.

[0010] According to another characteristic, the ventilation and extraction system comprises several ventilation vents regularly distributed between the first and second ends of the paint booth and / or several extraction vents regularly distributed between the first and second ends of the paint booth.

[0011] According to another characteristic, the paint booth has a vertical median plane as well as upper and lower parts.

[0012] According to another characteristic, the ventilation and extraction system comprises at least two longitudinal rows of ventilation vents symmetrical with respect to the vertical median plane and positioned in the upper part of the paint booth.

[0013] According to another characteristic, the two rows of ventilation vents are separated by a distance less than the width of the fuselage.

[0014] According to another characteristic, the ventilation and extraction system comprises at least two longitudinal rows of extraction vents symmetrical with respect to the vertical median plane and positioned in the lower part of the paint booth.

[0015] According to another characteristic, the two rows of extraction vents are spaced apart by a distance less than the width of the fuselage.

[0016] According to another characteristic, the ventilation and extraction system comprises at least one air extractor as well as, for each row of extraction vents, at least one extraction duct which extends parallel to the vertical median plane and comprises one end connected to the air extractor, at least one of the ducts extraction being movable between a retracted position in which it is moved away from the vertical median plane and a deployed position in which it is brought closer to the vertical median plane.

[0017] According to another characteristic, the ventilation and extraction system comprises two extraction ducts symmetrical with respect to the vertical median plane and movable between the retracted and deployed positions, the two extraction ducts being placed against each other in the deployed position.

[0018] According to another characteristic, the ventilation and extraction system comprises at least one end extraction vent positioned at the first end of the paint booth.

[0019] According to another characteristic, the ventilation and extraction system comprises at least one row of end extraction vents perpendicular to the vertical median plane and positioned at the first end of the paint booth.

[0020] According to another characteristic, the ventilation and extraction system comprises at least one end extraction vent positioned at the second end of the paint booth.

[0021] According to another characteristic, the ventilation and extraction system comprises at least one row of end extraction vents perpendicular to the vertical median plane and positioned at the second end of the paint booth.

[0022] According to another characteristic, the gas injected and extracted by the ventilation and extraction system is nitrogen or a mixture of air enriched with nitrogen.

[0023] Other characteristics and advantages will emerge from the description of the invention which follows, a description given by way of example only, with reference to the appended drawings, among which:

[0024] [Fig. 1] is a perspective view from a first angle of view of a painting installation, comprising a paint booth in the open state, illustrating an embodiment of the invention,

[0025] [Fig.2] is a perspective view from a second angle of view of the painting installation visible in [Fig.l],

[0026] [Fig.3] is a perspective view of a structure of a paint booth, in the open state, illustrating an embodiment of the invention,

[0027] [Fig.4] is a perspective view of the structure of the paint booth visible in [Fig.3] in the closed state,

[0028] [Fig.5] is a rear view of a painting installation illustrating an embodiment of the invention,

[0029] [Fig.6] is a perspective view of a portion of a structure of a paint booth illustrating an embodiment of the invention,

[0030] [Fig.7] is a perspective view of part of a structure of a cabin of painting illustrating an embodiment of the invention,

[0031] [Fig-8] is a perspective view of a lower part of a paint booth equipped with extraction vents illustrating an embodiment of the invention,

[0032] [Fig.9] is a side schematic representation of a ventilation system and extraction illustrating an embodiment of the invention,

[0033] [Fig. 10] is a schematic perspective representation of a ventilation and extraction system illustrating one embodiment of the invention,

[0034] [Fig. 11] is a perspective view of a part of a ventilation and extraction system comprising movable extraction vents, in the retracted position on part (A) and in the deployed position on part (B), illustrating one embodiment of the invention.

[0035] According to an embodiment visible in [Fig.l], an aircraft 10 comprises a fuselage 12 which extends between a front tip 12.1 and a rear tip 12.2, wings 14 which extend on either side of the fuselage 12 as well as a tailplane 16, positioned at the rear tip 12.2, comprising a vertical part 16.1 as well as horizontal parts 16.2 located on either side of the rear tip 12.2. The aircraft 10 has an aircraft longitudinal axis XX which is horizontal when the aircraft 10 is on the ground and passes through the front and rear tips 12.1, 12.2.

[0036] The fuselage 12 has a length corresponding to a dimension of the fuselage 12 taken horizontally from the front tip 12.1 to the rear tip 12.2 as well as a width corresponding to a dimension of the fuselage 12 taken horizontally, in a transverse plane perpendicular to the aircraft longitudinal axis XX. The fuselage 12 has a front portion 12A located in front of the wings 14 as well as a rear portion 12B located behind the wings 14. Each wing 14 comprises a trailing edge 14.1 and forms a given angle with the fuselage 12. This angle is measured between the trailing edge 14.1 and the fuselage 12.

[0037] The aircraft 10 comprises propulsion assemblies 18 connected to the wings 14 and spaced from the fuselage 12.

[0038] As illustrated in [Fig. 5], a painting installation adapted for painting an aircraft 10 comprises a paint booth 20 located, inside a building, on a platform S (such as the ground) configured to allow an aircraft to be painted to park there, said paint booth 20 comprising first and second side walls 22, 24 parallel to each other as well as an upper wall 26 distant from the platform S, substantially parallel to the platform S and connecting the first and second side walls 22, 24. The building in which the paint booth 20 is positioned is dimensioned so as to allow an aircraft to enter it. The tunnel-shaped paint booth 20 separates an interior zone located between said walls 22, 24, 26 and the platform S as well as an exterior zone. The paint booth 20 extends between first and second ends 20.1, 20.2. According to a arrangement, the upper wall 26 is substantially horizontal and the first and second side walls 22, 24 are substantially vertical.

[0039] Of course, the invention is not limited to the painting operation. Thus, the painting installation can be used to carry out operations preparatory to the painting operation such as an initial inspection, sanding, cleaning and masking operation for example, and / or subsequent operations such as decoration and final inspection operations for example.

[0040] Furthermore, the painting installation may not include a building. In this case, the painting booth 20 is located on a platform S located in the open air (outside a building).

[0041] For the remainder of the description, a longitudinal direction is a horizontal direction (substantially parallel to the platform S) and substantially parallel to the first and second side walls 22, 24. A vertical median plane PMV is a vertical plane, parallel to the longitudinal direction, positioned equidistant from the first and second side walls 22, 24. A transverse plane is a vertical plane and perpendicular to the vertical median plane PMV. A transverse direction is a horizontal direction and perpendicular to the longitudinal direction.

[0042] The walls 22, 24, 26 are rigid and have a length (dimension taken in the longitudinal direction) greater than or equal to the length of the fuselage 12 so that the fuselage 12 of the aircraft can contain in the interior zone delimited by the paint booth 20.

[0043] According to a feature, the first and second side walls 22, 24 comprise first and second side openings 22.1, 24.1 sized to allow the wings 14 to pass through the first and second side walls 22, 24 while leaving a small clearance around the wings 14. Thanks to these side openings 22.1, 24.1, the first and second side walls 22, 24 are brought closer to the fuselage 12, which makes it possible to reduce the volume of the interior zone in which the fuselage 12 is positioned. According to one arrangement, the fuselage 12 is approximately centered between the first and second side walls 22, 24. According to one configuration, the first and second side walls 22, 24 are spaced apart by a distance of between 1.5 and 3 times the width of the fuselage. Generally, each first or second side wall 22, 24 is positioned between the fuselage 12 and the propulsion assembly 18 closest to the fuselage 12.

[0044] According to one embodiment, for at least one of the first and second lateral openings 22.1, 24.1, the paint booth 20 comprises at least one flexible barrier, such as a curtain for example, secured to the first or second lateral wall 22, 24 and configured to fill the space between the first or second lateral wall 22, 24 and the wing 14 and completely close the first or second side opening 22.1, 24.1. According to one configuration, the painting installation comprises at least one flexible barrier at each of the first and second side openings 22.1, 24.1.

[0045] According to an embodiment visible in particular in [Fig. 4], the upper wall 26 comprises an upper opening 26.1 sized to allow the empennage 16, and more particularly its vertical part 16.1, to pass through the upper wall 26 while leaving a small clearance around the empennage 16. Thanks to this upper opening 16.1, the upper wall 26 can be brought closer to the fuselage 12, which makes it possible to reduce the volume of the interior zone in which the fuselage 12 is positioned. To give an order of magnitude, the upper wall 26 is separated from the platform S by a distance of between 1.5 and 3 times the height of the fuselage 12 (dimension taken in a vertical direction).

[0046] According to one configuration, the paint booth 20 comprises at least one flexible barrier, such as a curtain for example, secured to the upper wall 26 and configured to fill the space between the upper wall 26 and the tail 16 and completely close the upper opening 26.1.

[0047] Of course, the invention is not limited to these embodiments for the paint booth. Thus, the walls 22, 24, 26 could not be rigid. Whatever the embodiment, the paint booth 20 is configured to contain a fuselage 12 of an aircraft 10. It is positioned on a platform S (such as the ground), has a tunnel shape (formed for example by the walls 22, 24, 26) of length greater than or equal to that of the fuselage 12 and of width less than three times the width of the fuselage 12 so as to obtain a paint booth 20 with a reduced cross-section. The paint booth 20 comprises at least first and second lateral openings 22.1, 24.1 configured to allow the wings of the aircraft to pass through the paint booth 20 in order to reduce the width of said booth 20.

[0048] Providing a paint booth 20 with small sections adapted to those of the fuselage makes it possible to reduce the volume of air to be treated by a ventilation and extraction system, to be heated for drying the paint, which makes it possible to reduce the energy consumption for air treatment and drying. Reducing the volume of air present in the paint booth 20 also makes it possible to facilitate and optimize the management of the characteristics (temperature, hygrometry, quality, etc.) of the air.

[0049] The painting installation comprises at least one ventilation and extraction system 28 comprising at least one ventilation outlet 30, configured to inject a gas (in particular air) into the painting booth 20, and positioned at a first zone of the painting booth 20 as well as at least one outlet extraction 32, configured to extract the gas (in particular the air) present in the paint booth 20, positioned at a second zone of the paint booth 20 opposite the first zone. According to one arrangement, the ventilation and extraction system 28 comprises several ventilation vents 30 regularly distributed between the first and second ends 20.1, 20.2 of the paint booth 20 and / or several extraction vents 32 regularly distributed between the first and second ends 20.1, 20.2 of the paint booth 20.

[0050] The ventilation and extraction system 28 may comprise at least one regulation system making it possible to control the flow rate of the gas leaving the ventilation outlets 30 and / or entering the extraction outlets 32, the temperature and / or the hygrometry of the gas leaving the ventilation outlets 30 or any other characteristics of the gas leaving the ventilation outlets 30 and / or entering the extraction outlets 32.

[0051] Combining a paint booth 20 of small dimensions, adjusted to those of the aircraft fuselage, and a ventilation and extraction system 28 makes it possible to obtain laminar (undisturbed) flows around the fuselage 12, which prevents paint particles from remaining in suspension and limits the phenomena of paint deposition on the walls of the paint booth 20 and subsequently of detachment of particles likely to become embedded in the fresh paint and degrade the quality of the paint coating.

[0052] Of course, the invention is not limited to air as a gas. Thus, the gas could be nitrogen or a mixture of air enriched with nitrogen in order to reduce the oxygen concentration. This solution makes it possible to reduce or eliminate the risks of explosion and fire. In addition, under these conditions, the application of paint is less sensitive to temperature and humidity conditions.

[0053] According to one configuration, the ventilation and extraction vents 30, 32 are positioned at or near the upper wall 26 and the platform S. According to one arrangement, the ventilation vents 30 are positioned at or near the upper wall 26 and the extraction vents 32 are positioned at or near the platform S, as illustrated in [Fig.9].

[0054] Of course, the invention is not limited to this arrangement. Thus, the ventilation and extraction vents 30, 32 could be positioned at each end of the fuselage so as to generate a horizontal gas flow.

[0055] According to one embodiment, the ventilation and extraction system 28 comprises at least two longitudinal rows R30 of ventilation outlets 30 symmetrical, with respect to the vertical median plane PMV, which each extend from the first end 20.1 of the paint booth 20 to its second end 20.2. According to one configuration, the ventilation and extraction system 28 comprises at least one air flow generator 30.1 as well as, for each row R30 of ventilation outlets tilation 30, at least one ventilation duct 30.2 which extends parallel to the vertical median plane PMV and comprises one end connected to the air flow generator 30.1, said ventilation duct 30.2 having a plurality of orifices and / or slots which form the ventilation vents 30. Whatever the configuration, the rows R30 of ventilation vents 30 are positioned above the fuselage 12, in the upper part of the paint booth 20 and as close as possible to the vertical median plane PMV, the rows R30 of ventilation vents being separated by a distance less than the width of the fuselage 12. Alternatively, the ventilation and extraction system 28 may comprise several ventilation ducts 30.2 connected to the same air flow generator 30.1.

[0056] Of course, the invention is not limited to this embodiment. Thus, the ventilation and extraction system 28 may comprise only a single longitudinal row of ventilation vents at the vertical median plane PMV. Alternatively, the ventilation and extraction system 28 may comprise two main longitudinal rows of ventilation vents, symmetrical with respect to the vertical median plane PMV and close to the latter, as well as two secondary longitudinal rows of ventilation vents symmetrical with respect to the vertical median plane PMV and spaced from the latter. Preferably, the two main longitudinal rows generate a significant air flow rate while the two secondary longitudinal rows generate a lower air flow rate and contribute to reducing the appearance of swirling flows in the upper corners of the paint booth 20.

[0057] According to one embodiment, the ventilation and extraction system 28 comprises at least two longitudinal rows R32 of extraction vents 32, symmetrical with respect to the vertical median plane PMV, which each extend from the first end 20.1 of the paint booth 20 to its second end 20.2. According to one configuration, the ventilation and extraction system 28 comprises at least one air extractor 32.1 as well as, for each row R32 of extraction vents 32, at least one extraction duct 32.2 which extends parallel to the vertical median plane PMV and comprises one end connected to the air extractor 32.1, said extraction duct 32.2 having a plurality of orifices and / or slots which form the extraction vents 32.Whatever the configuration, the rows R32 of extraction vents 32 are positioned below the fuselage 12, in the lower part of the paint booth 20 and as close as possible to the vertical median plane PMV, the rows R32 of extraction vents 32 being spaced apart by a distance less than the width of the fuselage 12. Alternatively, the ventilation and extraction system 28 may comprise several extraction ducts 32.2 connected to the same air extractor 32.1.

[0058] Of course, the invention is not limited to this embodiment. Thus, the ventilation and extraction system 28 may comprise only one longitudinal row. of extraction vents at the level of the vertical median plane PMV or two rows placed side by side against each other at the level of the vertical median plane. Alternatively, the ventilation and extraction system 28 may comprise two main longitudinal rows of extraction vents, symmetrical with respect to the vertical median plane PMV and close to the latter, as well as two secondary longitudinal rows of extraction vents symmetrical with respect to the vertical median plane PMV and spaced from the latter.

[0059] According to one arrangement, each extraction duct 32.2 is positioned on the platform S. According to this arrangement, no infrastructure is integrated into the platform S.

[0060] According to a configuration visible in [Fig. 11], at least one of the extraction ducts 32.2 is movable between a retracted position, visible in part (A) of [Fig. 11], in which it is spaced from the vertical median plane PMV and clears a passage path for at least one of the landing gears of the aircraft 10 as well as a deployed position, visible in part (B) of [Fig. 1 1], in which it is brought closer to the vertical median plane PMV and rests on the platform S. According to one configuration, the ventilation and extraction system 28 comprises two extraction ducts 32.2 symmetrical with respect to the vertical median plane and movable between the retracted and deployed positions, the two extraction ducts 32.2 being placed against each other in the deployed position. This configuration makes it possible to position the extraction vents 32 as close as possible to the vertical median plane PMV when the extraction ducts 32.2 are in the deployed position while allowing the positioning of an aircraft 10 in the paint booth 20 when the extraction ducts 32.2 are in the retracted position and clear the platform S. According to one embodiment, the ventilation and extraction system 28 comprises, for each extraction duct 32.2, a longitudinal support 34 fixed on the platform S as well as an articulation 36 connecting the longitudinal support 34 and the extraction duct 32.2.

[0061] According to one embodiment, each extraction duct 32.2 is a rigid tubular duct of square or rectangular cross-section. For example, the articulation 36 comprises two connecting rods which each have a first end connected to the longitudinal support 34 and a second end connected to the extraction duct 32.2. The ventilation and extraction system 28 may comprise at least one motorization to cause the movement of each extraction duct 32.2 between the retracted and deployed positions.

[0062] According to an embodiment visible in [Fig. 10], the ventilation and extraction system 28 comprises at least one end extraction vent 38 positioned at the first end 20.1 of the paint booth 20. According to one arrangement, the ventilation and extraction system 28 comprises at least one row R38 of end extraction vents 38 perpendicular to the vertical median plane PMV and positioned at the first end 20.1 of the paint booth 20.

[0063] According to an embodiment visible in [Fig. 10], the ventilation and extraction system 28 comprises at least one end extraction vent 40 positioned at the second end 20.2 of the paint booth 20. According to one arrangement, the ventilation and extraction system 28 comprises at least one row R40 of end extraction vents 40 perpendicular to the vertical median plane PMV and positioned at the second end 20.2 of the paint booth 20.

[0064] Positioning end extraction vents 38, 40 at the first and second ends 20.1, 20.2 of the paint booth 20 makes it possible to avoid the occurrence of swirling flows due to the conical shape of the front and rear tips 12.1, 12.2 of the fuselage 12.

[0065] The paint booth 20 comprises at least one structure 42 (visible in FIGS. 3 and 4) supporting the first and second side walls 22, 24 as well as the upper wall 26. According to one embodiment, the structure 42 comprises frames 42.1 positioned in transverse planes as well as side members 42.2, connecting the frames 42.1 to each other, oriented parallel to the longitudinal direction. Of course, the invention is not limited to this configuration for the structure 42.

[0066] According to one embodiment, the paint booth 20 comprises several longitudinal slides 44 secured to the structure 42, parallel to each other and to the longitudinal direction, positioned on either side of the vertical median plane PMV. According to an arrangement visible in [Fig. 5], the structure 42 comprises, on either side of the vertical median plane PMV, several longitudinal slides 44, 44' offset in height. By way of example, the structure 42 comprises two longitudinal slides 44, 44' on each side of the vertical median plane PMV. According to one configuration, each longitudinal slide 44, 44' comprises two longitudinal rails 44.1, 44.2, 44.1', 44.2' offset in height.

[0067] Each slide 44, 44' is configured to allow at least one support, such as a nacelle 46 (visible in [Fig.7]) or a carriage 48 (visible in [Fig.8]), to slide along the slide 44, 44' and to move along the fuselage 12 positioned in the paint booth 20. According to an arrangement visible in [Fig.7], the nacelle 46 can be connected to the slide 44 by at least one telescopic link 50 configured to move the nacelle 46 relative to the slide 44, 44' in a transverse direction.

[0068] Each slide 44, 44' may comprise several sections positioned end to end.

[0069] The paint booth 20 may comprise galleries 52 distributed over several levels and configured to allow operators to move around the fuselage 12, as well as stairs and / or elevators 54 to move from one gallery 52 to another.

[0070] According to one embodiment, the paint booth 20 comprises at least first and second parts 56, 58 respectively comprising at least a part of the first and second side walls 22, 24, at least one of the first and second parts 56, 58 being movable between a spaced apart position, corresponding to an open state of the paint booth 20 as illustrated in FIGS. 1 to 3, in which a fuselage of an aircraft can be positioned between the first and second parts 56, 58 as well as a close position, corresponding to a closed state of the paint booth 20 as illustrated in FIGS. 4 and 5.

[0071] The first part 56 comprises at least a part of the first side wall 22 as well as a first portion of the upper wall 26. The second part 58 comprises at least a part of the second side wall 24 as well as a second portion of the upper wall 26, the first and second portions of the side wall being joined along a joining plane PJ (visible in [Fig. 5]) when the first and second parts 56, 58 are brought together and the paint booth 20 is in the closed state.

[0072] According to one configuration, the first and second parts 56, 58 are substantially symmetrical with respect to the vertical median plane PMV. In this case, the junction plane PJ coincides with the vertical median plane PMV when the first and second parts 56, 58 are brought together. According to this configuration, the first and second portions of the upper wall 26 comprise cutouts 26.2, 26.3 (visible in [Fig. 2]) so as to form the upper opening 26.1 when the first and second parts 56, 58 are brought together.

[0073] According to one embodiment, the first and second parts 56, 58 are movable.

[0074] According to one configuration, the painting installation comprises, for each of the first and second parts 56, 58, at least one sliding connection 56.1, 58.1, connecting the first or second part 56, 58 and the platform S, configured to allow the first or second part 56, 58 to translate between the open and closed states.

[0075] In operation, when the fuselage 12 of the aircraft 10 to be painted is positioned in the paint booth 20, the aircraft longitudinal axis XX is positioned substantially in the vertical median plane PMV. To reduce the dimensions of the lateral openings 22.1, 24.1, each sliding connection 56.1, 58.1 forms with the vertical median plane PMV an angle substantially equal to that formed between the fuselage 12 and each wing 14. According to one embodiment, each sliding connection 56.1, 58.1 comprises several rails parallel to each other which form an angle substantially equal to that formed between the fuselage 12 and the corresponding wing 14. Thus, when the aircraft is positioned to be painted, the rails associated with the first or second part 56, 58 are substantially parallel to the trailing edge 14.1 of the wing 14 which cooperates with the corresponding first or second part 56, 58.

[0076] According to one configuration, the painting installation comprises, for each of the first and second parts 56, 58, at least one motorization for moving the first and second parts 56, 58.

[0077] According to an embodiment visible in Figures 1 to 4, the paint booth 20 comprises a first section 60 configured to house the front part 12A as well as a second section 62 configured to house the rear part 12B. The first and second sections 60, 62 respectively comprise first and second end faces 60.1, 62.1 positioned in transverse planes. At least one of the first and second sections 60, 62 is movable between a first position, corresponding to the closed state of the paint booth 20, in which the first and second transverse faces 60.1, 62.1 are pressed against each other as well as a second position, corresponding to the open state of the paint booth 20, in which the first and second transverse faces 60.1, 62.1 are separated.

[0078] According to one configuration, the first section 60 is fixed. In addition, the second section 62 comprises first and second parts 56, 58 movable between a position spaced from the vertical median plane corresponding to the open state of the paint booth 20 (visible in FIGS. 1 to 3) and a position close to the vertical median plane corresponding to the closed state of the paint booth 20 (visible in [Fig. 4]). This configuration makes it possible to limit the dimensions of the moving parts and their travel.

[0079] According to one arrangement, the first section 60 comprises the lateral openings 22.1, 24.1 which open at the level of the first end face 60.1. Alternatively, the lateral openings 22.1, 24.1 are located on the second section 62 or straddling the first and second sections 60, 62.

[0080] According to one operating mode, the fuselage 12 of the aircraft 10 is painted during a first phase then the wings 14 and the empennage 16 are painted during a second phase.

[0081] As illustrated in [Fig.l], the first and second parts 56, 58 of the second section 62 being in the spaced apart position, an aircraft 10 to be painted is moved so as to introduce its front part 12A into the first section 60, as illustrated in Figures 2 and 3. Following the first and second parts 56, 58 are moved to close the painting booth 20, as illustrated in Figures 4 and 5.

[0082] Of course, the invention is not limited to the embodiment described in Figures 1 to 5 for the paint booth 20. Other solutions can be envisaged to obtain a paint booth 20 of small dimensions making it possible to confine the fuselage 12 to be painted in a reduced volume. Thus, the first and second parts 56, 58 could extend from the first end 20.1 of the painting booth to its second end 20.2.

Claims

Claims

1. Painting installation adapted to paint an aircraft fuselage (12) having a length and a width, said painting installation comprising a platform (S) as well as at least one ventilation and extraction system (28) comprising at least one ventilation outlet (30) positioned at a first zone as well as at least one extraction outlet (32) positioned at a second zone opposite the first zone; characterized in that the painting installation comprises a painting booth (20), positioned on the platform (S), which extends between first and second ends (20.1, 20.2) and has a tunnel shape having a length and a width configured according to those of the fuselage (12) of the aircraft so that the length of the tunnel is greater than or equal to that of the fuselage (12) and the width of the tunnel is less than three times that of the fuselage (12), each ventilation outlet (30) being configured to inject a gas into the paint booth (20), each extraction outlet (32) being configured to extract a gas present in the paint booth (20).

2. Painting installation according to the preceding claim, characterized in that the ventilation and extraction system (28) comprises several ventilation outlets (30) regularly distributed between the first and second ends (20.1, 20.2) of the painting booth (20) and / or several extraction outlets (32) regularly distributed between the first and second ends (20.1, 20.2) of the painting booth (20).

3. Painting installation according to one of the preceding claims, characterized in that the paint booth (20) has a vertical median plane (PMV) as well as upper and lower parts and in that the ventilation and extraction system (28) comprises at least two longitudinal rows (R30) of ventilation outlets (30) symmetrical with respect to the vertical median plane (PMV) and positioned in the upper part of the paint booth (20).

4. Painting installation according to the preceding claim, characterized in that the two rows (R30) of ventilation outlets (30) are separated by a distance configured according to the width of the fuselage (12) so that said distance is less than the width of the fuselage (12).

5. Painting installation according to one of the preceding claims, characterized in that the paint booth (20) has a vertical median plane (PMV) as well as upper and lower parts and in that the ventilation and extraction system (28) comprises at least two longitudinal rows (R32) of extraction vents (32) symmetrical with respect to the vertical median plane (PMV) and positioned in the lower part of the paint booth (20).

6. Painting installation according to the preceding claim, characterized in that the two rows (R32) of extraction vents (32) are spaced apart by a distance configured as a function of the width of the fuselage (12) so that said distance is less than the width of the fuselage (12).

7. Painting installation according to one of claims 5 to 6, characterized in that the ventilation and extraction system (28) comprises at least one air extractor (32.1) as well as, for each row (R32) of extraction vents (32), at least one extraction duct (32.2) which extends parallel to the vertical median plane (PMV) and comprises an end connected to the air extractor (32.1), at least one of the extraction ducts (32.2) being movable between a retracted position in which it is spaced from the vertical median plane (PMV) and a deployed position in which it is brought closer to the vertical median plane (PMV).

8. Painting installation according to the preceding claim, characterized in that the ventilation and extraction system (28) comprises two extraction ducts (32.2) symmetrical with respect to the vertical median plane and movable between the retracted and deployed positions, the two extraction ducts (32.2) being placed against each other in the deployed position.

9. Painting installation according to one of the preceding claims, characterized in that the ventilation and extraction system (28) comprises at least one end extraction mouth (38) positioned at the first end (20.1) of the painting booth (20).

10. Painting installation according to the preceding claim, characterized in that the painting booth (20) has a vertical median plane (PMV) and in that the ventilation and extraction system (28) comprises at least one row (R38) of end extraction vents (38) perpendicular to the vertical median plane (PMV) and positioned at the first end (20.1) of the painting booth. painting (20).

11. Painting installation according to one of the preceding claims, characterized in that the ventilation and extraction system (28) comprises at least one end extraction mouth (40) positioned at the second end (20.2) of the painting booth (20).

12. Painting installation according to the preceding claim, characterized in that the paint booth (20) has a vertical median plane (PMV) and in that the ventilation and extraction system (28) comprises at least one row (R40) of end extraction vents (40) perpendicular to the vertical median plane (PMV) and positioned at the second end (20.2) of the paint booth (20).

13. Use of a painting installation according to one of the preceding claims, characterized in that the gas injected and extracted by the ventilation and extraction system (28) is nitrogen or a mixture of air enriched with nitrogen.

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