Abstract: Propulsion system (2) for a helicopter (1) comprising a main engine (9), a main rotor (3), a main gearbox (4) including an output mechanically connected to the main rotor (3), a reduction gearbox (13) mechanically coupled between the main engine (9) and a first input of the main gearbox (4), and an assistance device (10). The assistance device (10) comprises a first electric machine mechanically coupled to the reduction gearbox (13) and configured to operate as an electric generator to take off energy produced by the main engine (9), and a second electric machine mechanically coupled to a second input of the main gearbox (4), the second electric machine being supplied with electrical power by the first electric machine and configured to operate as an electric motor to deliver additional mechanical power to the main gearbox (4).

Abstract: An apparatus for clamping a robotically controlled tool to a workpiece comprises a tool support mountable on a robotic arm and configured to support the tool, a plurality of clamping modules, each of which includes at least one vacuum cup arranged to clamp the tool support to the workpiece, and an adjustment mechanism configured to adjust the position of the tool support relative to the workpiece.

Abstract: A guiding device includes a rail which extends in a direction, a plurality of runners distributed in the direction, and, for each runner, at least one runner/rail connection connecting each runner and the rail, configured to allow each runner to pivot independently from the other runners relative to the rail, around an axis of pivoting parallel to the direction.

Abstract: A machine tool for carrying out operations on a part includes a longitudinal rail, a transverse arm, a module for connection between the transverse arm and the longitudinal rail, the module being fitted in translation on the longitudinal rail, a tool which is supported by the transverse arm, and a retention unit which is arranged at one end of the transverse arm, and includes at least one sucker. The machine tool has an assembly configuration—in which the retention unit and the tool are positioned respectively on both sides of the longitudinal rail, such that the tool is fitted cantilevered relative to the longitudinal rail. This provides the machine tool with great polyvalence, in that it makes it possible to carry out operations in areas which in particular have significant curvatures, which are difficult to access, or which are unsuitable for securing of the sucker(s) of the retention unit.

Abstract: An apparatus for clamping a robotically controlled tool to a workpiece comprises a tool support mountable on a robotic arm and configured to support the tool, a plurality of clamping modules, each of which includes at least one vacuum cup arranged to clamp the tool support to the workpiece, and an adjustment mechanism configured to adjust the position of the tool support relative to the workpiece.

Abstract: A guiding device includes a rail which extends in a direction, a plurality of runners distributed in the direction, and, for each runner, at least one runner/rail connection connecting each runner and the rail, configured to allow each runner to pivot independently from the other runners relative to the rail, around an axis of pivoting parallel to the direction.

Abstract: A machine tool for carrying out operations on a part includes a longitudinal rail, a transverse arm, a module for connection between the transverse arm and the longitudinal rail, the module being fitted in translation on the longitudinal rail, a tool which is supported by the transverse arm, and a retention unit which is arranged at one end of the transverse arm, and includes at least one sucker. The machine tool has an assembly configuration—in which the retention unit and the tool are positioned respectively on both sides of the longitudinal rail, such that the tool is fitted cantilevered relative to the longitudinal rail. This provides the machine tool with great polyvalence, in that it makes it possible to carry out operations in areas which in particular have significant curvatures, which are difficult to access, or which are unsuitable for securing of the sucker(s) of the retention unit.

Abstract: A machine tool adapted to perform operations, for example, machining, on a surface of a part of large size is provided. The machine tool comprises a longitudinal rail and a transverse arm, orthogonal to the longitudinal rail, slidingly fastened at a first end to the longitudinal rail. A second end of the transverse arm is provided with a unit comprising a holding device enabling the unit to be held in position on the part during an operation. The transverse arm bearing a tool is thus precisely positioned on the part on which the operations are carried out.

Abstract: A machine tool adapted to perform operations, in particular machining, on the surface of a part of large dimensions. The machine tool comprises a longitudinal rail and a transverse arm orthogonal to the longitudinal rail, fixed at a first end to slide on the longitudinal rail. A second end of the transverse arm is fitted with at least one motorized unit comprising at least one sucker allowing the unit to be held in position on the part during an operation. The unit is motorized and comprises a movement system for crawling over the part parallel to the longitudinal rail. The transverse arm carrying a tool is thus positioned precisely on the part. The unit is articulated relative to the transverse arm around a pivot of axis parallel to said transverse arm, in order to adapt to the curvature of the part along the longitudinal rail.

Abstract: A tool-holder including: a first rail and a second rail that are parallel and each of which includes first fixing elements configured for fixing said rail to the surface, a driving slide including first guiding elements configured to slide over the first rail, a drive system configured to move the driving slide along the first rail and a first fixing system, a driven slide including second guiding elements configured to provide a sliding connection with the second rail and a second fixing system, an assembly bar carrying a first complementary fixing system cooperating with the first fixing system to form a removable fixing between them, a second complementary fixing system intended to cooperate with the second fixing system to form a removable fixing between them, and a carriage having a first assembly system, and a movement system on which the carriage is fixed and that is configured to move said carriage along the assembly bar, and a support module including second fixing elements for fixing the tool and a

Abstract: A tool-holder including: a first rail and a second rail that are parallel and each of which includes first fixing elements configured for fixing said rail to the surface, a driving slide including first guiding elements configured to slide over the first rail, a drive system configured to move the driving slide along the first rail and a first fixing system, a driven slide including second guiding elements configured to provide a sliding connection with the second rail and a second fixing system, an assembly bar carrying a first complementary fixing system cooperating with the first fixing system to form a removable fixing between them, a second complementary fixing system intended to cooperate with the second fixing system to form a removable fixing between them, and a carriage having a first assembly system, and a movement system on which the carriage is fixed and that is configured to move said carriage along the assembly bar, and a support module including second fixing elements for fixing the tool and a

Abstract: A machine tool adapted to perform operations, in particular machining, on the surface of a part of large dimensions. The machine tool comprises a longitudinal rail and a transverse arm orthogonal to the longitudinal rail, fixed at a first end to slide on the longitudinal rail. A second end of the transverse arm is fitted with at least one motorized unit comprising at least one sucker allowing the unit to be held in position on the part during an operation. The unit is motorized and comprises a movement system for crawling over the part parallel to the longitudinal rail. The transverse arm carrying a tool is thus positioned precisely on the part. The unit is articulated relative to the transverse arm around a pivot of axis parallel to said transverse arm, in order to adapt to the curvature of the part along the longitudinal rail.

Abstract: A machine tool adapted to perform operations, for example, machining, on a surface of a part of large size is provided. The machine tool comprises a longitudinal rail and a transverse arm, orthogonal to the longitudinal rail, slidingly fastened at a first end to the longitudinal rail. A second end of the transverse arm is provided with a unit comprising a holding device enabling the unit to be held in position on the part during an operation. The transverse arm bearing a tool is thus precisely positioned on the part on which the operations are carried out.