Patent application number | Description | Published |
20090065632 | AIRCRAFT WITH JET ENGINES ARRANGED AT THE REAR - When an aircraft is propelled by at least one jet engine fixed in a rear part of the aircraft, at least one substantially horizontal rear aerodynamic surface, the rear horizontal surface, is arranged at the rear of the aircraft and at least one jet engine is fixed under the rear horizontal surface by an attachment mast fixed by its upper part to the rear horizontal surface and maintains, by its lower part, the jet engine. The rear horizontal surface is also the horizontal tail unit of the aircraft or a horizontal surface maintained above the fuselage. The rear surfaces and the fuselage are arranged such that the engines are installed and removed using a vertical movement of the engines, which are advantageously one, two or three in number, in the rear zone of the aircraft. | 03-12-2009 |
20090084889 | Aircraft having a reduced acoustic signature - An aircraft the propulsive units of which include engines, and which is distinguished by reduced noise emissions, includes a wing structure fixed to an upper region of the fuselage, and a vertical tail system having at least two vertical stabilizers which are generally vertically fixed to the fuselage aftwardly of the wing structure. The engines are disposed side by side in a propulsive package disposed above the fuselage, which propulsive package includes the following, air inlet openings for the propulsive package, which openings are disposed above the fuselage between a point at the leading edge and a point at the trailing edge of an aerodynamic root chord of the wing structure; and exhaust nozzle conduit outlets associated with exhaust nozzle conduits, which outlets are formed by the structure (cowling structure) of the propulsive package, and are disposed above the fuselage forwardly of an aft terminus of the fuselage and between the vertical stabilizers. | 04-02-2009 |
20090108127 | METHOD FOR FIXING AN ENGINE STRUT TO AN AIRPLANE WING - The inventive fixing system comprises a front attachment ( | 04-30-2009 |
20100012781 | Aircraft with retracted front landing gear - An aircraft has a fuselage | 01-21-2010 |
20100019081 | AIRPLANE WITH PITCH AND YAW COMMAND BY PROPULSION SYSTEM - Swiveling engines | 01-28-2010 |
20100030538 | METHOD AND AIDS FOR MODELLING 3D OBJECTS - A method for aiding modelling 3D objects permits production of a parameterizable instantiate model of a 3D object from a generic model of the object and a specific model of a second object including at least a part of first object. Certain characteristic data are extracted from the specific model of the second 3D object according to the parameters of the generic model of the first 3D object. A parameterizable instantiate model is produced fro the generic model of the first 3D model by matching this model to the extracted data. | 02-04-2010 |
20100032519 | AIRPLANE WITH A MODIFIABLE SURFACE OF VERTICAL EMPANNAGE - An aircraft has a vertical fin fastened to the rear and above a fuselage of elongated form, essentially in a vertical plane of symmetry of the aircraft. The vertical fin has at least two stable positions, an extended position and a returned position, such that a surface of the vertical fin, subjected to an aerodynamic flow when the aircraft is in flight, is modified in position or in surface between the returned position and the extended position, so that the aerodynamic drag of the vertical fin is reduced in the returned position under given flight conditions compared to the extended position. The change from one surface to another of the vertical fin is accomplished by modifying the geometry of the vertical fin or by displacing the vertical fin relative to the fuselage so that the vertical fin, for example, is more or less inside the fuselage, or more or less immersed in the wake zone of the fuselage in which the local dynamic pressure Pd is reduced relative to the infinitely upstream dynamic pressure Pd0. | 02-11-2010 |
20100038472 | AIRPLANE WITH REAR ENGINES - An aircraft has at least two jet-propulsion engines mounted laterally on the fuselage in a symmetrical design in the aft part of the fuselage. Each jet engine is mounted on the fuselage some distance from the vertical plane of symmetry of the aircraft, so that the jet engine, in a so-called half-buried configuration, is partly inside an envelope surface of a theoretical fuselage. The half-buried, jet engines are mounted on a main boom fitted on the vertical plane of symmetry of the aircraft, inside the fuselage in back, of a forward main frame. The tail sections are mounted on the main boom and the boom is integral with structures for transmitting forces into the forward part of the fuselage. The structure is advantageously made of fiber-reinforced composite materials. | 02-18-2010 |
20100044502 | BEAM MOUNTED REAR PROPULSION SYSTEM FOR AN AIRCRAFT AND AIRCRAFT WITH SUCH SYSTEM - A propulsive system for an aircraft including an auxiliary jet engine is integrated into a tail cone of a fuselage. A carrying structure of the jet engine is primarily formed with beams and frames or half-frames to which the auxiliary jet engine is fixed by lateral beams. The beams are interdependent of the frames and half-frames, and the beams are overhanging behind a frame behind which is fixed the engine. Each beam includes a lower half-beam and a higher half-beam, separated on at least a part of its length ahead from attachments of the jet engine to determine a space free of structure impediment for lateral air intakes. | 02-25-2010 |
20100044504 | REAR PROPULSION SYSTEM WITH LATERAL AIR INLETS FOR AN AIRCRAFT WITH SUCH SYSTEM - A propulsive system for an aircraft including an auxiliary jet engine is integrated within a tail cone of a fuselage. Lateral air intakes include each one a scoop movable between a closed position and an opened position are associated with aerodynamic channels to supply with air the auxiliary jet engine. The aerodynamic channels meet at a common channel including a movable flap to balance air flows coming from the air intakes when the operation is not symmetrical. | 02-25-2010 |
20100049475 | METHOD AND AIDS FOR RELATIVE POSITIONING OF OBJECTS DURING A DESIGN PHASE - A method aiding in relative positioning of | 02-25-2010 |
20100059623 | Aircraft with its fuselage suspended under the wing - An aircraft displaying a fuselage, a wing attached to the fuselage in an upper part and in a middle part along the length of the fuselage, a set of airfoils situated behind the wing and propulsion engines mounted on the wing. The wing, the set of airfoils and the propulsion engines are solidly fastened to an air propulsion unit that is affixed to the fuselage by a connection system permitting the controlled modification in flight of the position of the air propulsion unit relative to the fuselage in the three directions X, Y and Z of the reference aircraft and in rotation around the three directions X, Y and Z. The control of the relative movements of the air propulsion unit and fuselage permits an improved behavior in flight of the airplane and has advantages in the fabrication and operation of the plane. | 03-11-2010 |
20100059626 | FUSELAGE ARRANGEMENT FOR AIRPLANE - An aircraft fuselage with a shape elongated along a longitudinal axis X along a longitudinal axis of the aircraft that determines a direction toward the front along a direction of motion of the aircraft in flight. A front section with straight cross sections widening relative to the X axis, located at the front of the fuselage and ending in the front of the fuselage in a fuselage nose, and delimited at the rear by a cross section for joining to a rear part of the fuselage behind the front section. The front section includes a cockpit located above a floorboard between a cockpit bulkhead to the rear and a front base to the front. | 03-11-2010 |
20100133377 | AIRPLANE WITH FLAT REAR FUSELAGE SAID QUEUE-DE-MORUE EMPENNAGE - An aircraft includes a fuselage having a shape elongated along a longitudinal axis X of the aircraft and at least one wing fixed to the fuselage between the front end and the rear end of the fuselage. The fuselage includes a substantially cylindrical central part and a rear tapered part on which a vertical empennage is fixed. Between a section connecting the rear part with the central part of the fuselage and the rear end the maximum width of each section of the fuselage is constant or increasing rearwards up to a maximum width L of the fuselage, the height of each section of the fuselage is decreasing rearwards in the direction of the negative X, so that the rear end of the fuselage forms a trailing edge having a small thickness which is substantially horizontal in an aircraft reference system and substantially rectilinear. | 06-03-2010 |
20100200703 | AIRCRAFT PRESENTING TWO PAIRS OF WINGS - An aircraft comprises: a fuselage; a front pair of wings; a rear pair of wings; and a pair of bodies, each body interconnecting, at a distance from the fuselage, the front and rear wings that are situated on the same side of the fuselage. | 08-12-2010 |
20100237188 | Movable main undercarriage for an aircraft - The airplane comprises a fuselage having frames, and at least two undercarriages each comprising a support and at least one wheel, the support being carried directly by the fuselage and being hinged to the fuselage about an axis that lies outside the frames. | 09-23-2010 |
20110024556 | Aircraft with yaw control by differential drag - An aircraft having an elongated fuselage and a lifting surface fastened to the fuselage. The aircraft has a device for controlling the torque around the yaw axis GZ of the aircraft in which aerodynamic forms that have devices to generate aerodynamic drag are fastened to each end of the lifting surface at non-zero distances from each side of a vertical plane of symmetry XZ of the aircraft. The drag-generating devices are commanded to produce a different aerodynamic drag at each of the two ends to generate a yaw torque on the aircraft. The aerodynamic forms, for example, have winglets improving the aerodynamics of the lifting surface, and provided with aerodynamic drag generators. | 02-03-2011 |
20110030339 | Multifunctional propulsive system for an airplane - A propulsive system for aircraft that has a jet engine and a nacelle surrounding the aforementioned jet engine. The nacelle has a front section fixed relative to the jet engine, and a rear extremity behind the front section, and has a rear section with two petals hinged relative to the front section. Each of the two petals in a position called zero-setting forms an extension of the front section of the nacelle in which the inside and outside surfaces of the petals and, respectively, determine the aerodynamic forms of the rear section, which are in geometric continuity with the inside and outside surfaces and, respectively, that determine the aerodynamic forms of the front section. The petals can be set individually at a positive or negative setting angle to put into play the reverser, APU, air brake, vectorial, and taxiing modes of the propulsive system. | 02-10-2011 |
20110036941 | Aircraft with a wing movable along the longitudinal axis of th fuselage - The aircraft has a fuselage, a wing integral with the fuselage in a middle section in a longitudinal direction of the fuselage, and a tail assembly integral with the fuselage. The wing has a rigid central chamber at the fuselage determined in front by a front spar, in the rear by a rear spar, and laterally by root ribs of the wing. The wing is mounted to be movable longitudinally in translation relative to the fuselage between an extreme forward position Xav and an extreme rearward position Xar so that the center of gravity of the aircraft can be displaced longitudinally to be positioned precisely at any time relative to the point of application of the resultant of the aerodynamic lift forces. The wing is mounted to be movable relative to the fuselage through the intermediary of at least two parallel beams, parallel to the longitudinal axis of the fuselage and integral with the fuselage at the rear/forward bulkhead of the fuselage located on each side of the rigid central chamber. | 02-17-2011 |
20110135472 | AERODYNAMIC FLIGHT CONTROL SURFACE SAID OF CROCODILE STYLE FOR AIRCRAFT - A trailing edge aerodynamic airfoil of a load-bearing aerodynamic surface of an aircraft of the crocodile type has two airfoil flaps, with each flap being integral in a forward section with a rotational shaft that determines the axis of rotation of the airfoil flap. In a position called the zero setting, the airfoil flaps are essentially joined and form a rear section of the load-bearing surface, and each airfoil flap is movable in translation independently of the other airfoil flap, relative to the load-bearing surface, with each flap being entrained in rotation relative to the load-bearing surface around its axis of rotation by the motion in translation. The ends of the rotational shaft have extensions guided by runners fastened to these ends and acting conjointly with racks fastened to the load-bearing surface. | 06-09-2011 |
20110220758 | ARCHITECTURE D'AVION A FUSELAGE LARGE - A large-capacity airplane principally includes a fuselage which has no region of constant width between the front and the rear and a wing fixed to the fuselage. As a preference, the engines are fixed at the rear under a horizontal tail held above the fuselage by vertical stabilizers and maintenance wells are formed in the fuselage in vertical alignment with each engine to allow the engines to be fitted and removed using conventional means. The width of the fuselage is determined, on the one hand, so that the airplane landing gear is fixed to the fuselage and in the up position is included within the interior volume of the fuselage and, on the other hand, so that the rear engines are above the fuselage in order to make use of the beneficial effects of this position. | 09-15-2011 |
20110226899 | Autonomous plane architecture for the transport and the replacement of propulsion engines - To be able to transport and replace in an autonomous manner one of its failing propulsion engines, a plane includes: a fuselage; propulsion engines maintained above the fuselage; maintenance wells traversing the fuselage substantially vertically with respect to the engines in which the engines can be lifted or lowered; a cargo compartment including a floor arranged in the fuselage, where the height, length and width dimensions of the cargo compartment are compatible with the transport of an engine; the cargo compartment and the wells have a common separation wall including an exit whose dimensions allow the passage of an engine; and a lower hatch or ramp for closing the lower opening of the well includes a position in which the upper surface of the ramp is substantially horizontal and substantially in the extension of the floor of the cargo compartment. According to this arrangement, a propulsion engine can be replaced by an engine which is transported in the cargo compartment in the autonomous manner for the plane. | 09-22-2011 |
20120138736 | AIRPLANE WITH A TAILCOAT TAIL ASSEMBLY AND REAR ENGINE - An airplane, including a fuselage having an elongate shape along a longitudinal axis of the airplane, and at least one wing attached to the fuselage between front and back ends of the fuselage and a substantially cylindrical central portion and a rear scaleable portion on which a vertical tail assembly and a rear propulsion assembly are attached. Between a section for connecting the rear portion to the central portion of the fuselage and the back end: the maximum width of each fuselage section is constant or increases towards the rear up to a maximum fuselage width L; the height of each fuselage section decreases towards the rear, such that the back end of the fuselage forms a thin trailing edge substantially horizontal in the indicating line of the airplane and substantially rectilinear; a reactor for the propulsion assembly is provided in a so-called semi-buried configuration in the fuselage. | 06-07-2012 |
20120298795 | AIRCRAFT WITH A PIVOTABLE REAR PORTION - The invention relates to an aircraft the fuselage ( | 11-29-2012 |
20120325958 | AIRCRAFT WITH REAR ANNULAR TAIL - A rear tail assembly for an aircraft, including a fuselage, a wing and at least one propulsion engine attached in the rear portion of the fuselage located behind the wing along the X longitudinal axis of the aircraft, wherein the aforementioned assembly includes aerodynamic surfaces connected in the rear portion of the fuselage. The tail assembly essentially includes horizontal aerodynamic surfaces and essentially vertical aerodynamic surface arranged so as to form an annular structure including at least one ring attached to the fuselage. At lease one engine is held in the ring formed by the tail assembly. In one embodiment, a central fin is used for defining two rings in the annular structure. In particular embodiments of an aircraft including such a tail assembly, one or two engines can be fitted in the ring area. | 12-27-2012 |
20140054413 | AIRPLANE HAVING A REAR PROPULSION SYSTEM - An aeroplane comprising a fuselage elongated in a longitudinal direction of the aeroplane is provided. The aeroplane includes a wing attached to the fuselage in a midsection of said fuselage in the longitudinal direction, such that part of the fuselage extends forward of the wing toward a front extremity of the fuselage, and part of the fuselage extends from the rear of the wing toward a rear extremity of the fuselage. A rear fuselage section includes at least one engine attached to the fuselage and located to the rear of the wing. The one or more engines attached to the fuselage are attached in a rear position such that only parts of the aeroplane located in a projection space of the one or more engines attached to the fuselage and the rear fuselage does not include any aerodynamic surfaces intended to assure stability and/or aerodynamic control of the aeroplane. | 02-27-2014 |