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公开(公告)号：CA2158799A1
公开(公告)日：1996-03-23
申请号：CA2158799
申请日：1995-09-21
Applicant: SEXTANT AVIONIQUE
Inventor： MORBIEU BERTRAND
Abstract: Tête d'émission-réception pour anémomètre Doppler longitudinal à au moins une paire d'axes de mesure. Elle comprend: - un laser (1); - des moyens de commutation de polarisation (4) sur le trajet du faisceau laser; - des moyens séparateurs de polarisation (8) sur le trajet du faisceau polarise issu des moyens de commutation; - des moyens de commande (5) pour commuter les moyens de commutation alternativement d'un état à un autre de manière à diriger le faisceau alternativement sur un axe de mesure puis sur un autre en fonction de son état de polarisation.
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公开(公告)号：FR2658911B1
公开(公告)日：1994-09-02
申请号：FR9002402
申请日：1990-02-27
Applicant: SEXTANT AVIONIQUE
Inventor： MORBIEU BERTRAND
Abstract: The resonator (2) is made of a solid laser material. The sensor is arranged to be subjected to a mechanical stress representing the parameter to be measured. It comprises means to cause the resonator (2) to oscillate and to maintain its oscillations at a resonant frequency representing the parameter to be measured, comprising means (25-27) of sending a continuous-pumping light beam to the resonator (2). The sensor of the invention is well suited for measuring pressure.
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公开(公告)号：DE69521468T2
公开(公告)日：2001-11-22
申请号：DE69521468
申请日：1995-09-20
Applicant: SEXTANT AVIONIQUE
Inventor： MORBIEU BERTRAND
Abstract: The anemometer head has a laser (1) which transmits a beam reflected by two mirrors (2,3) on a polarisation switch (4), e.g a liquid crystal device. The switch is actuated by a control circuit (5) in order to provide a beam (6) which linear polarisations are alternatively switched by 90 deg.. The beam is then divided in two parallel beams, in a prism (7). The parallel beams cross a dual polarisation separator (8), which focusses the beams onto the central reflector (14) of a telescope mechanism. Rays are reflected through the telescope and out through a side mounted window (17,18) in the aircraft skin (19). The control circuit actuates the switch so that the beam is alternatively directed on measuring axis according to its polarisation state.
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公开(公告)号：FR2725033B1
公开(公告)日：1997-01-03
申请号：FR9411309
申请日：1994-09-22
Applicant: SEXTANT AVIONIQUE
Inventor： MORBIEU BERTRAND
Abstract: The method involves measuring the air speed vector, the static pressure, and the impact temperature and then using those values to calculate the other required parameters. The air speed vector is obtained using laser anemometers (1). Each anemometer has a laser, a 4-to-2 axis commutating head, and two processing subsystems (3). The static pressure is measured by sensors (4) each having three inputs which are each connected to a receiver (5). The impact temperature is obtained by probes (6) which are placed in the engine air inputs. The measured data is sent to two processors (7), each associated with one side of the plane. A back-up processor (8) is provided to generate the same parameters using more data. Additionally the three processors receive the data required to calculate ground speed. This data can be obtained from e.g a satellite or a radar.
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公开(公告)号：DE69521468D1
公开(公告)日：2001-08-02
申请号：DE69521468
申请日：1995-09-20
Applicant: SEXTANT AVIONIQUE
Inventor： MORBIEU BERTRAND
Abstract: The anemometer head has a laser (1) which transmits a beam reflected by two mirrors (2,3) on a polarisation switch (4), e.g a liquid crystal device. The switch is actuated by a control circuit (5) in order to provide a beam (6) which linear polarisations are alternatively switched by 90 deg.. The beam is then divided in two parallel beams, in a prism (7). The parallel beams cross a dual polarisation separator (8), which focusses the beams onto the central reflector (14) of a telescope mechanism. Rays are reflected through the telescope and out through a side mounted window (17,18) in the aircraft skin (19). The control circuit actuates the switch so that the beam is alternatively directed on measuring axis according to its polarisation state.
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Patent Agency Ranking
公开(公告)号：FR2725034B1
公开(公告)日：1997-01-03
申请号：FR9411308
申请日：1994-09-22
Applicant: SEXTANT AVIONIQUE
Inventor： MORBIEU BERTRAND
Abstract: The anemometer head has a laser (1) which transmits a beam reflected by two mirrors (2,3) on a polarisation switch (4), e.g a liquid crystal device. The switch is actuated by a control circuit (5) in order to provide a beam (6) which linear polarisations are alternatively switched by 90 deg.. The beam is then divided in two parallel beams, in a prism (7). The parallel beams cross a dual polarisation separator (8), which focusses the beams onto the central reflector (14) of a telescope mechanism. Rays are reflected through the telescope and out through a side mounted window (17,18) in the aircraft skin (19). The control circuit actuates the switch so that the beam is alternatively directed on measuring axis according to its polarisation state.
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公开(公告)号：FR2725034A1
公开(公告)日：1996-03-29
申请号：FR9411308
申请日：1994-09-22
Applicant: SEXTANT AVIONIQUE
Inventor： MORBIEU BERTRAND
Abstract: The anemometer head has a laser (1) which transmits a beam reflected by two mirrors (2,3) on a polarisation switch (4), e.g a liquid crystal device. The switch is actuated by a control circuit (5) in order to provide a beam (6) which linear polarisations are alternatively switched by 90 deg.. The beam is then divided in two parallel beams, in a prism (7). The parallel beams cross a dual polarisation separator (8), which focusses the beams onto the central reflector (14) of a telescope mechanism. Rays are reflected through the telescope and out through a side mounted window (17,18) in the aircraft skin (19). The control circuit actuates the switch so that the beam is alternatively directed on measuring axis according to its polarisation state.
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公开(公告)号：DE69105310T2
公开(公告)日：1995-06-08
申请号：DE69105310
申请日：1991-02-27
Applicant: SEXTANT AVIONIQUE
Inventor： MORBIEU BERTRAND , TORREGROSA MICHEL
Abstract: The system comprises at least one probe (1) comprising a laser generator (6), transmission optics (7, 8, 9, 10), optics (10, 9, 30) for receiving a radiation back-scattered by aerosols, means (3) of pumping the laser generator, a detection interferometer (4) receiving a portion of the transmitted laser beam and the back-scattered radiation and means (5) for, after beating of the transmitted and back-scattered beams, determining the Doppler shift of the back-scattered beam and from this deriving the air speed along the axis of the transmitted beam. The transmitted beam is focused on a section of air distant from the aircraft, the laser generator (6) is disposed in the vicinity of the skin of the aircraft, the pumping means (3) and the interferometer (4) are remotely installed in the aircraft and the frequency of the laser line is adapted such that the connections between the probe (1), on the one hand, and the pumping means (3) and the interferometer (4), on the other hand, are carried out by monomode optical fibres with maintained polarisation (13, 23; 17, 19, 20, 22). … …
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公开(公告)号：DE69101862D1
公开(公告)日：1994-06-09
申请号：DE69101862
申请日：1991-02-20
Applicant: SEXTANT AVIONIQUE
Inventor： MORBIEU BERTRAND
IPC: G01L9/00
Abstract: The resonator (2) is made of a solid laser material. The sensor is arranged to be subjected to a mechanical stress representing the parameter to be measured. It comprises means to cause the resonator (2) to oscillate and to maintain its oscillations at a resonant frequency representing the parameter to be measured, comprising means (25-27) of sending a continuous-pumping light beam to the resonator (2). The sensor of the invention is well suited for measuring pressure.
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公开(公告)号：DE68902632T2
公开(公告)日：1993-04-01
申请号：DE68902632
申请日：1989-12-11
Applicant: SEXTANT AVIONIQUE
Inventor： COMBE HUBERT , MORBIEU BERTRAND
Abstract: The incident beam (3) of a laser anemometer of known type is intercepted by two discs (91, 92) having the same axis, which are driven in rotation about this axis. The two discs are provided with transparent and reflecting sectors arranged so that the incident beam successively adopts three different paths (3x, 3y, 3z). The axis common to the two discs intercepts the axis of the incident beam (3). Mirrors (not shown) permit the direction of each one of the paths in directions which are orthogonal in pairs and which define a trirectangular reference system, in which the three components of the velocity may be successively measured. … The anemometer of the invention is applied in particular to the measurement of the three components of the air speed of an aircraft in relation to still air. … …
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