Patents Assigned to Office National d'Etudes et de Recherches Aerospatiales
  • Patent number: 9112477
    Abstract: The device (10) comprises a cylindrical resonator (R) vibrating in extension-compression along its longitudinal axis (?) and having a vibration node (N) in its mid-plane (?), the vibration naturally generating radial extension/compression deformations, and a mechanical decoupling module comprising a hollow cylinder (2) surrounding the resonator and a membrane (1) positioned in the aforementioned mid-plane and rigidly connected to the cylindrical surface of the resonator and to the internal cylindrical surface of the hollow cylinder. The hollow cylinder vibrates in extension/compression in antiphase with the vibration of the resonator, enabling the effects of the radial deformations of the hollow cylinder and of the resonator to compensate each other in an area (ZF) located on the external surface of the hollow cylinder close to the mid-plane.
    Type: Grant
    Filed: July 4, 2011
    Date of Patent: August 18, 2015
    Assignee: Office National D'Etudes Et de Recherches Aerospatiales (Onera)
    Inventors: Michael Bahriz, Olivier Le Traon
  • Patent number: 9097682
    Abstract: An optical probe for measuring physical and chemical characteristics of a transparent fluid medium during flow comprises two fingers parallel to one another and to the flow. Each finger consists of a solid bar of transparent material, in which a light beam propagates and is reflected on an end face of the bar, said face being situated upstream in the flow. Such an optical probe may be reduced in size, and provides results which are less sensitive to disturbances of the flow that are caused by the probe itself.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: August 4, 2015
    Assignee: ONERA (Office National d'Etudes et de Recherches Aerospatiales)
    Inventors: Ajmal Mohamed, Raphaël Vallon
  • Publication number: 20150194787
    Abstract: According to one aspect, the invention relates to an optic fiber amplifier having a high Brillouin threshold, and including: an amplification optic fiber (16) comprising a core and a sheath and suitable for amplifying a signal beam travelling in said core; means for coupling the signal beam in an input end of said amplification optic fiber; means for coupling a pump laser beam for pumping said amplification optic fiber; a structure (330, 340) including a deformable portion around which at least one portion of said amplification optic fiber is wound in the shape of turns, said turns being in contact with a surface of said deformable portion, wherein the friction of said optic fiber on said surface resulting, during the deformation of said deformable portion, in an elongation of said amplification optic fiber according to an elongation profile that varies from one turn to the other.
    Type: Application
    Filed: July 2, 2013
    Publication date: July 9, 2015
    Applicant: Office National d'etudes et de Recherches Aérospatiales-ONERA
    Inventors: Guillaume Canat, Laurent Lombard, Julien Le Gouët, Didier Fleury
  • Patent number: 9073628
    Abstract: Generator (1) of synthetic jets (2) for a main flow of fluid, comprising a cavity (10) delimited by a fixed wall (13) and a mobile wall. The fixed wall comprises a sleeve (8) and a head (4) provided with an orifice (14) through which the generated jet of fluid (2) is drawn in from and ejected into the main flow of fluid. The mobile wall is opposite the head. The generator comprises a rigid piston (3) including the mobile wall and sliding in a fluid-tight manner in the sleeve (8), and comprises an actuator mechanically linked with the piston and able to drive the piston with an alternating movement having an amplitude and a frequency. The actuator is capable of providing a movement of variable amplitude and frequency, at least the amplitude being variable during the movement. The actuator comprises a mechanism for the mechanical amplification of displacement.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: July 7, 2015
    Assignee: ONERA (Office National D'Etudes et de Recherches Aerospatiales)
    Inventors: Frederic Ternoy, Etienne Uzeel, Didier Landaes
  • Patent number: 9052454
    Abstract: According to one aspect, the invention relates a spectral band-pass filter, which is optimized for the transmission of an incident wave at at least a first given central wavelength ?0, and which includes: a metal grating having a thickness (t) greater than approximately ?0/50 and including at least a first set of substantially identical, parallel slots having a width (W) less than around ?0/10, and being spaced apart periodically or quasi-periodically according to a first period that is less than said first central wavelength, a layer of dielectric material having a thickness (h) and a given refractive index (ng), which is coupled to the metal grating to form a waveguide for the waves diffracted by the grating, said first period of the grating being designed such that only orders 0 and ±1 of a wave having normal incidence and a wavelength ?0 are diffracted in the layer of dielectric material, the assembly of the dielectric layer and grating being suspended, during use, in a fluid having a refractive index of
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: June 9, 2015
    Assignees: Centre Nationale de la Recherche Scientifique-CNRS, Office National d'Etudes et de Recherches Aérospatiales-ONERA
    Inventors: Grégory Vincent, Riad Haidar, Stéphane Collin, Jean-Luc Pelouard
  • Patent number: 9046368
    Abstract: The invention relates to a measurement by means of atom interferometry, using a Raman source that is created by modulating a monochromatic laser source. By conveniently selecting positions in which interactions between atoms and a laser radiation, produced by the Raman source, are caused, it is possible to eliminate or at least reduce a measurement bias caused by supplementary components of the laser radiation. Such a measurement having eliminated or reduced bias can be used in an inertia sensor.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: June 2, 2015
    Assignee: ONERA (Office National D'Etudes et de Recherches Aerospatiales)
    Inventors: Yannick Bidel, Nassim Zahzam, Alexandre Bresson
  • Publication number: 20150090028
    Abstract: An atom interferometer with differential inertial measurement comprises an atom source system to supply several sets of atoms intended for acceleration measurements which are made simultaneously at different respective locations. The sets of atoms are transported by a dedicated system between an initial position and the locations at which the acceleration measurements are made. The interferometer can be used to obtain highly accurate acceleration or gravity gradient measurement results.
    Type: Application
    Filed: March 27, 2013
    Publication date: April 2, 2015
    Applicant: ONERA (Office National d'Etudes et de Recherches Aerospatiales)
    Inventors: Nassim Zahzam, Yannick Bidel, Alexandre Bresson
  • Patent number: 8978473
    Abstract: The Coriolis-effect gyrometer has a tuning fork having two tines, which tuning fork is formed in a plate of piezoelectric crystal and provided with electrodes composed of ribbon conductors supported solely by the faces of the tines parallel to the plate. The drive excitation and drive detection electrodes are connected to an oscillator circuit, and the Coriolis detection electrodes are connected to a detection circuit. For each of the faces parallel to the plate of each of the tines the drive detection ribbon is disposed between the drive excitation ribbon and the Coriolis detection ribbon and is connected to the inverting input of an operational amplifier, the non-inverting input of which is connected to the electric ground, said operational amplifier forming part of the oscillator circuit.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: March 17, 2015
    Assignee: Office National d'Etudes et de Recherches Aerospatiales (ONERA)
    Inventors: Olivier Le Traon, Steve Masson, Jean Guerard, Raphael Levy, Claude Chartier, Denis Janiaud
  • Patent number: 8964187
    Abstract: A micro-machined optical measuring device including: a set of photosensitive detector elements situated on a given face of a first support; a second support, assembled to the first support, forming a prism and including a first face through which a visible radiation is intended to penetrate and a second face, forming a non-zero angle ? with the first face and a non-zero angle ? with the given face of the first support, the second face being semi-reflective, the first support and the second support being positioned such that an interferometric cavity is made between the second face and the given face, the distance between the given face of the first support and the second face of the second support varying regularly.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: February 24, 2015
    Assignees: Commissariat a l'energie atomique et aux energies alternatives, Office National d'Etudes et de Recherches Aerospatiales
    Inventors: Manuel Fendler, Gilles Lafargues, Nicolas Guerineau, Sylvain Rommeluere, Florence De La Barriere
  • Patent number: 8941068
    Abstract: Infrared imagery device with integrated shield against parasite infrared radiation, and method of manufacturing the device. This device comprises a support provided with an infrared radiation detector, at least one optical device facing the detector, and a shield against parasite radiation. The shield comprises at least two continuous beads, spaced from each other, extending from the support as far as the optical device, provided with vents and made of a material that significantly attenuates parasite radiation, penetrating laterally between the support and the optical device. The two beads with their vents 15 form a baffle. The device is manufactured using the flip chip technique.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: January 27, 2015
    Assignees: Commissariat àl'Énergie Atomique et aux Énergies Alternatives, Office National d'Etudes et de Recherches Aérospatiales
    Inventors: Manuel Fendler, Guillaume Druart
  • Patent number: 8835824
    Abstract: The present disclosure relates to an imaging system comprising an impulsion light source for an input light beam oriented toward an observed area and an optoelectronic sensor having a photosensitive surface with a visibility capable of substantially covering the observed area. An impulsion of the incident light beam is backscattered by only by a portion of the observed area into a backscattered spot on the photosensitive surface. A deflection device deflects the impulsions of the incident light beam onto the respective portions of the observed area. A device acquires the thumbnail images corresponding to the backscattered spots resulting in impulsions of the incident light beam. The system combines said thumbnail images to produce an image having a sufficiently high signal-to-noise ratio for portions of interest of the observed area, a high spatial resolution, and a greater insensitivity to motion blurs.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: September 16, 2014
    Assignee: ONERA (Office National d'Etudes et de Recherches Aerospatiales)
    Inventor: Dominique Hamoir
  • Publication number: 20140240166
    Abstract: The invention relates to a device for passively or actively detecting a target which scatters a useful signal and which is immersed in an observed area comprising elements that are likely to generate clutter echoes forming a non-useful signal, the useful signal having a coherent scattering lobe that is greater than that of the non-useful signal for a given wavelength and given direction, said device including means for receiving the signal scattered by the target, said receiving means including: at a given moment t, at least two separate reception portions having the same polarization, each portion including at least one receiver and one phase center; and a processing means enabling the mutual correlation between at least two received signals, or between at least two signals constructed from signals received at a moment t, each of said received signals being received by a receiver of one of said at least two separate reception portions, characterized in that the phase centers of said at least two reception po
    Type: Application
    Filed: July 12, 2012
    Publication date: August 28, 2014
    Applicant: OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES (ONERA)
    Inventors: Jean-Marc Cortambert, Jacques Dulost, Dominique Medynski, Serge Roques
  • Publication number: 20140226021
    Abstract: According to one aspect, the invention relates to a microbolometer array for thermal detection of light radiation in a given spectral band, comprising a supporting substrate and an array of microbolometers (300) of given dimensions, arranged in an array. Each of said microbolometers comprises a membrane (301) suspended above said supporting substrate, said membrane consisting of an element (305) for absorbing the incident radiation and a thermometric element (304) in thermal contact with the absorber, electrically insulated from said absorber element. The absorber element comprises at least one first metal/insulator/metal (MIM) structure comprising a multilayer of three superposed films of submicron-order thickness i.e. a first metallic film (311), a dielectric film (310), and a second metallic film (309), said MIM structure being able to have a resonant absorption of said incident radiation at at least one wavelength in said spectral band.
    Type: Application
    Filed: July 13, 2012
    Publication date: August 14, 2014
    Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE-CNRS, Office National D'Etudes Et De Recherches Aerospatiales-ONERA, Commissariat à l'énergies alternatives-CEA
    Inventors: Charlie Koechlin, Patrick Bouchon, Riad Haidar, Jean-Luc Pelouard, Jean-Jacques Yon, Joël Deschamps, Fabrice Pardo, Stéphane Collin
  • Publication number: 20140145793
    Abstract: The device (10) comprises a cylindrical resonator (R) vibrating in extension-compression along its longitudinal axis (?) and having a vibration node (N) in its mid-plane (?), the vibration naturally generating radial extension/compression deformations, and a mechanical decoupling module comprising a hollow cylinder (2) surrounding the resonator and a membrane (1) positioned in the aforementioned mid-plane and rigidly connected to the cylindrical surface of the resonator and to the internal cylindrical surface of the hollow cylinder. The hollow cylinder vibrates in extension/compression in antiphase with the vibration of the resonator, enabling the effects of the radial deformations of the hollow cylinder and of the resonator to compensate each other in an area (ZF) located on the external surface of the hollow cylinder close to the mid-plane.
    Type: Application
    Filed: July 4, 2011
    Publication date: May 29, 2014
    Applicant: Office National D'Etudes Et De Recherches Aerospatiales (Onera)
    Inventors: Michael Bahriz, Olivier Le Traon
  • Publication number: 20140111651
    Abstract: The imaging system for imaging field rays comprises a detection surface, a device for focusing the field rays with said detection surface, and a diaphragm. Said device comprises a Fresnel lens comprising a first dioptre, the non-plane surface of which, called the active zone, makes it possible to focus the field rays towards said detection surface, and said diaphragm allows controlled distribution of the field rays over said active zone.
    Type: Application
    Filed: April 16, 2012
    Publication date: April 24, 2014
    Applicants: ULIS, OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES (ONERA)
    Inventors: Guillaume Druart, Florence De La Barriere, Arnaud Crastes
  • Patent number: 8682507
    Abstract: Disclosed are a method and system for improving real-time determination of flight parameters of an aircraft during flight. A selection module selects and delivers measured values of input parameters to an estimation unit, and the estimation unit uses the input parameters to estimate at least two selected flight parameters. The input parameters are received by the estimation unit on the basis of identified flight mechanics equations associated with the selected flight parameters. The estimation unit includes an extended Kalman filter, which is configured to receive the values of the input parameters and to output joint estimations of the selected flight parameters based on the flight mechanics equations, during the flight of the aircraft.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: March 25, 2014
    Assignees: Airbus Operations SAS, Onera (Office National d'etudes et de Recherches Aerospatiales)
    Inventors: Pierre Ezerzere, Cedric Seren, Georges Hardier
  • Publication number: 20140055606
    Abstract: A method for range imaging allows determining respective distances to multiple objects, based on a single image. The image is captured through a component having a transmittance function of which the Fourier transform is inscribed on a circle within a plane of spatial frequencies. A Fourier transform of the captured image is calculated in order to obtain a total spectrum for the image content. The distance to each object is then calculated based on several homothetic superimpositions of a reference spectrum with the total spectrum, so that said reference spectrum coincides with a portion of the total spectrum each time.
    Type: Application
    Filed: August 21, 2013
    Publication date: February 27, 2014
    Applicant: ONERA (Office National d'Etudes et de Recherches Aerospatiales)
    Inventors: Martin Piponnier, Jerome Primot, Guillaume Druart, Nicolas Guerineau
  • Patent number: 8654348
    Abstract: The application relates to a method for analyzing the wave surface of a light beam from a source to the focus of a lens. The beam illuminates a sample on the analysis plane and having a defect. A diffraction grating of the plane is a conjugate of an analysis plane through a focal system. An image is formed in a plane at a distance from the grating plane and analyzed by processing means. The invention encodes this grating by a phase function resulting from the multiplication of two phase functions, a first exclusion function defining a meshing of useful zones transmitting the beam to be analyzed in the form of light pencil beams, and a second phase fundamental function which creates a phase opposition between two light pencil beams coming out of adjacent meshes of the exclusion grating.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: February 18, 2014
    Assignee: Office National d'Etudes et de Recherches Aerospatiales (Onera)
    Inventors: Jérôme Primot, Bruno Toulon, Nicolas Guérineau, Sabrina Velghe, Riad Haidar
  • Patent number: 8617323
    Abstract: The method according to the invention comprises the following operations: a) prepare a substrated formed of the said intermetallic alloy; b) deposit a coating of gold on the surface to be protected of the substrate; and c) subject the substrate thus equipped with the gold coating to annealing in controlled conditions in order to bring about limited diffusion of the gold into the surface to be protected. The invention is applicable in particular to parts of gas turbines, e.g. parts of aircraft engines.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: December 31, 2013
    Assignee: ONERA (Office National d'Etudes et de Recherches Aerospatiales)
    Inventors: Marie-Pierre Bacos, Pierre Josso
  • Patent number: 8593279
    Abstract: System (10) for detecting the position of a mobile or immobile entity (20) in a defined space (30), characterized in that it includes: means (40) of detecting the presence of said entity in at least two partially overlapping observation areas (Z1, Z2) of said space, said means being adapted for collecting at least one piece of immobile presence information (Ip) and one piece of movement information (Im) of said entity in each of said observation areas, processing means (50) which are adapted for carrying out logic operations on at least a portion of said information collected for each of said observation areas, decision means (60), which are connected to the processing means and adapted for controlling an action on the basis of a logic signal generated by the processing means.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: November 26, 2013
    Assignees: Office National d'Etudes et de Recherches Aerospatiales (ONERA), ISITEK
    Inventors: Philippe Dreuillet, Gérard Bobillot, Luc Vignaud, François Tardivel, Florin Paun