ONERA (Office National d'Etudes et de Recherches Aérospatiales) Patent applications |
Patent application number | Title | Published |
20150090028 | Atom Interferometry Device for Differential Inertial Measurement - 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. | 04-02-2015 |
20140055606 | Method and Device for Range Imaging - 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. | 02-27-2014 |
20130277775 | Planar Structure For A Triaxial Gyrometer - An inertial sensor for measuring information relating to rotation in three orthogonal axes, comprising a support and a vibrating sensitive element secured to the support; said sensitive element having a deformable frame and at least two deformable projections which extend in a plane (X-Y); wherein the inertial sensor extends in the same plane; the deformable frame and said at least two deformable projections have a plane of symmetry parallel to the plane; said at least two projections are rectilinear beams which have an approximately square cross section, are not collinear and are preferably approximately orthogonal to one another; each of said deformable beams being connected by only one end to the deformable frame at a location at which the amplitude of the primary vibration mode is at a maximum; and in that said sensor has a device for detecting each of the secondary vibration modes. | 10-24-2013 |
20130258344 | OPTICAL PROBE FOR MEASURING PHYSICAL AND CHEMICAL CHARACTERISTICS OF A MEDIUM DURING FLOW - 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. | 10-03-2013 |
20130035809 | METHOD AND SYSTEM FOR DETERMINING FLIGHT PARAMETERS OF AN AIRCRAFT - According to the invention, the system for determining, in real time, flight parameters of an aircraft, in the course of a flight of the latter, comprises an extended Kalman filter ( | 02-07-2013 |
20120263590 | ROTARY WING BLADE, ROTOR COMPRISING AT LEAST TWO OF SUCH BLADES AND METHOD TO IMPLEMENT SUCH A ROTOR - The present disclosure is directed to a rotary wing rotor comprising one or more blades. Each blade has a torsion frequency around its span being substantially equal to a rotation frequency (Ω) of the rotor; torsion means twist to the rotation frequency of the rotor, in synchronization with said rotation; and comprising a material configured to dampen the torsion resonance, so as to avoid the resonance divergence. | 10-18-2012 |
20110116074 | Measurement of Speed or Vibration Characteristics Using a Lidar Device with Heterodyne Detection - A process for measuring speed or vibration characteristics using a LIDAR device allows the separation of a useful contribution and an interfering contribution in a backscattered signal. To this purpose, a phase characteristic of an optical wave emitted in the direction of a target volume is modulated. The interfering contribution, which originates from a source at a distance from the target volume, appears with variable shifts of said phase characteristic in a heterodyne detection signal. An accumulation then isolates the useful contribution, from which a result is obtained for the speed or vibration measurement. The process can be implemented with a frequency modulation or phase modulation of the optical wave. | 05-19-2011 |
20100258680 | ELONGATED, TORSION-DEFORMABLE AERODYNAMIC ELEMENT - The invention relates to an elongated, torsion-deformable aerodynamic element, in which the upper surface ( | 10-14-2010 |