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公开(公告)号：JPH08105967A
公开(公告)日：1996-04-23
申请号：JP26089894
申请日：1994-10-03
Applicant: NAT SPACE DEV AGENCY
Inventor： HISADA YASUMASA , SAKURAI JOJI , YAJIMA MASANOBU
Abstract: PURPOSE: To provide a radar device capable of measuring an object for observation with a high resolution along a depthwise direction without using a large aperture antenna or narrow pulse width. CONSTITUTION: A radar device mounted on a moon-orbital observation satellite 1 or the like is provided with a transceiver section 2 for sending out the first transmission pulse f1 having a frequency reflected on the first moon surface 4-1 and not entering the moon soil, and the second transmission pulse f2 having a frequency entering the soil and reflected on the second moon surface 4-2, and then receiving the echo pulses thereof, as well as a signal processing circuit 11 for reversing the phase of the received echo pulse f1 ' of the first transmission pulse f1 and outputting the pulse f2 ' after the addition thereof to the second transmission echo pulse f2 '.
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公开(公告)号：JPH08105957A
公开(公告)日：1996-04-23
申请号：JP26089994
申请日：1994-10-03
Applicant: NAT SPACE DEV AGENCY
Inventor： HISADA YASUMASA , SAKURAI JOJI , YAJIMA MASANOBU
Abstract: PURPOSE: To allow depthwise observation with a high resolution without using a large aperture antenna by observing an identical observation object from two directions at the time of passing up the north and passing down the south, with an antenna offset in an identical direction from a position directed immediately below, and applying mutual correlation treatment to two observation data. CONSTITUTION: A radar device 2 laid on a moon-orbital observation satellite 1 is formed out of a transmission and receiving section 3, an antenna 4 and a mutual correlation treatment section 5. The antenna 4 has a beam axis 11 offset by a certain angle γ from a position directed immediately below. An identical point on the moon surface 13 is observed twice from two different directions, for example, from a point PN for passing up the north and a point PS for passing down the south, both appearing due to the rotation of the moon along the orbit of the satellite 1. Furthermore, the section 5 subjects two echo signals received from the observation of the identical point on the moon surface along two directions. and extracts information on the thickness of the surface soil of the moon.
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公开(公告)号：JPH08105956A
公开(公告)日：1996-04-23
申请号：JP26090194
申请日：1994-10-03
Applicant: NAT SPACE DEV AGENCY
Inventor： SAKURAI JOJI , YAJIMA MASANOBU , HISADA YASUMASA
Abstract: PURPOSE: To provide a radar device having the capability of giving a high resolution by using a relatively small antenna for reducing beam width substantially. CONSTITUTION: Regarding a radar device mounted on the ground, a spaceship or the like, a phased array antenna 4 is provided as an antenna for transmission and receiving in common. The beam axes of two transmission beams formed via the adjustment of a feeding phase for each antenna element are offset in opposite directions and the phase of one transmission beam is reversed to form a transmission differential beam pattern 6 as a transmission beam pattern. Also, two beam axes of two receiving beams formed via the adjustment of a feeding phase for each antenna element are offset in opposite directions, and the phase of one receiving beam is reversed to form a receiving differential beam pattern 7, as a receiving beam pattern. Furthermore, each of the beam axes of both beam patterns 6 and 7 are made different, and constitution is so made that both differential beam patterns 6 and 7 are only partly superposed on an observation object zone.
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公开(公告)号：JPH08105953A
公开(公告)日：1996-04-23
申请号：JP26089694
申请日：1994-10-03
Applicant: NAT SPACE DEV AGENCY
Inventor： YAJIMA MASANOBU , SAKURAI JOJI , HISADA YASUMASA
Abstract: PURPOSE: To provide a radar device having the capability of giving a high resolution by using a relatively small antenna for reducing beam width substantially. CONSTITUTION: Regarding a radar to be installed on a moon-orbital observation satellite 1 or the like, a transmission antenna 4 and a receiving antenna 5 are separately provided, and arranged so as to have only a part of each antenna beam pattern superposed on an observation object zone, with beam axes kept different from each other. Also, the antenna 5 receives only the reflected beam of a transmission beam from the superposed section. According to this construction, a radar device with equivalently reduced beam width can be provided.
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公开(公告)号：JPH08102605A
公开(公告)日：1996-04-16
申请号：JP26090294
申请日：1994-10-03
Applicant: NAT SPACE DEV AGENCY
Inventor： SAKURAI JOJI
Abstract: PURPOSE: To obtain an antenna storing and expanding device capable of easily storing and expanding an antenna element. CONSTITUTION: The antenna element 1 is rotatably supported by an antenna element holder through a rotary shaft 11 and constituted so as to be rotationally exited to a laid storing position by a helical spring 13. A coil 16 consisting of shape memory alloy to be shortened at the time of heating is connected between a fixed hole formed on the base end of the element 1 and a fixed fitting 15 formed on the bottom part of the holder 12, a heater 17 for heating the coil 16 is heated to shorten the coil 16, the element 1 is rotationally excited to an erected expanded position, and a latch fitting 19 is engaged with the element 1 to hold the element 1 at the expanded position.
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Patent Agency Ranking
公开(公告)号：JPH0862091A
公开(公告)日：1996-03-08
申请号：JP21958194
申请日：1994-08-23
Applicant: NAT AEROSPACE LAB , NAT SPACE DEV AGENCY
Inventor： NAKATANI TERUOMI , OKAMOTO OSAMU , KUWANO NAOAKI , SUZUKI SEIZO , SASA SHUICHI , NAKAYASU HIDEHIKO , KOSAKA MASAKAZU
Abstract: PURPOSE: To obtain a flight motion simulator for obtaining a compact three- dimensional air flow generator for generating a three-dimensional air flow which is similar to a wind tunnel, verifying and evaluating a flight control system for the change of an aircraft for air on the ground using the generator, and simulating flight motion due to the change for air. CONSTITUTION: A three-dimensional air-flow generator 1 is constituted of a compact wind tunnel part 2 for creating a three-dimensional air flow at an arbitrary wind speed and a two-axis angle deformation mechanism 3 for arbitrarily changing air-flow angle in conical motion with a nozzle blow-up port as a top at the wind tunnel part, the generator l is positioned at the tip of a polygonal truncated pyramid type Point tube type probe 50 provided at an active control aircraft 49 for air, and a three-dimensional air flow is generated to verify the flight control system for the change of the active control aircraft for air. Also, a three-dimensional air-flow generator and an air-flow sensor probe are provided at a flight motion simulator, thus simulating the flight motion based on the change for air.
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公开(公告)号：JPH0858697A
公开(公告)日：1996-03-05
申请号：JP21958294
申请日：1994-08-23
Applicant: NAT AEROSPACE LAB , NAT SPACE DEV AGENCY
Inventor： NAKATANI TERUOMI , OKAMOTO OSAMU , KUWANO NAOAKI , SUZUKI SEIZO , SASA SHUICHI , NAKAYASU HIDEHIKO , KOSAKA MASAKAZU
Abstract: PURPOSE: To quickly control the airspeed for the stabilization thereof by obtaining an airspeed vector for a change relative to the air on a real time basis for the supply thereof to a control system, and predicting a flight motion induced due to the change relative to the air. CONSTITUTION: This device has an air data sensor probe 1 formed out of polygonal truncated pyramid Pitot tube type probe, and an airspeed vector signal processor 2 calculates an airspeed vector on the basis of relative air pressure information detected with the probe 1. In addition, an airspeed vector signal is inputted to an onboard control computer 3 in parallel to a signal from each type of aircraft body movement detection sensor 4 and read into an air control system. Thereafter, a flight motion induced due to a change relative to the air is thereby predicted to generate a flight control rule for stabilizing the control of the airspeed.
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公开(公告)号：JPH07314369A
公开(公告)日：1995-12-05
申请号：JP11851894
申请日：1994-05-31
Applicant: NAT SPACE DEV AGENCY , HITACHI LTD
Inventor： EZAWA NAOYA , YANAI TETSUYA , ODA MITSUSHIGE
Abstract: PURPOSE:To improve connection strength between a connection member and a counter member without increasing their size largely. CONSTITUTION:A connection member 100 is provided with a casing 130, plural connection pawls 101 and plural connection holding pawls 105 installed on the casing 130 through pins to be capable of oscillation, and pawl drive mechanisms to oscillate the connection pawls 101 and connection holding pawls 105 respectively. A counter member 200 is provided with a casing 230 in which pawl engagement holes 201 with which forward end parts of the connection pawls 101 and forward end parts of the connection holding pawls 105 are engaged are formed. In the casing 230 of the counter member 200, protruded parts 233 protruded toward where the casing 130 of the connection member 100 is positioned under the condition immediately before connection where both members 100, 200 face each other are formed, while in the casing 130 of the connection member 100, recessed parts 133 to be engaged with the protruded parts 233 in the casing 230 of the counter member 200 are formed.
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公开(公告)号：JPH07280548A
公开(公告)日：1995-10-27
申请号：JP9381494
申请日：1994-04-06
Applicant: SHINKU RIKO KK , NAT SPACE DEV AGENCY
Inventor： MAEZONO AKIICHI , SAGARA HIROSHI , TSUDA KATSUMI , FUJIMORI YOSHINORI , YODA SHINICHI , TAKADA YOSHIAKI
Abstract: PURPOSE:To provide a contact angle measuring apparatus with no scattering in a measuring data which enables highly accurate measurement of a contact angle with easier adjustment of a volume of a liquid being extruded onto a solid plane. CONSTITUTION:A pulse is generated with a pulse circuit 1 and a pulse motor 2 makes a rotation as specified. A linear moving shaft 6 is pushed contacting one end part of a rotary moving part 4b with a screw of an intermediate rotary moving object 4 moving linearly rotating so that a piston 7 slides through a cylinder 8 in a linear motion. With the linear motion of the piston 7, the liquid is extruded through a pore of the cylinder 8 to generate a liquid drop 10 on a solid plane 9. Thus, the contact angle of the liquid drop is calculated theoretically using a theoretical expression of a contour curve from a actually measured value of the contour with a device constituted of a light source 13, a video camera 14 and a heating source 15.
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公开(公告)号：JPH07254884A
公开(公告)日：1995-10-03
申请号：JP6896894
申请日：1994-03-15
Applicant: NAT SPACE DEV AGENCY
Inventor： ARAKI TOMOHIRO
IPC: H04B10/00 , H04B10/032 , H04B10/07 , H04B10/118 , H04B10/22
Abstract: PURPOSE:To give a redundant constitution to many laser diodes for transmission without providing a mechanical mobile part by arranging plural laser diodes for transmission and using an optical fiber to lead the laser light from each laser diode to one optical path. CONSTITUTION:Optical fibers 4 to 5 are connected to laser diodes 1 to 3 for transmission, and front end parts of optical fibers 4 to 5 are bundled and are arranged so as to face a collimator lens 7, thus constituting a redundant system of laser diodes 1 to 3. For example, when the laser diode 2 emits light, the laser light is led by the optical fiber 5 and is emitted from the front end, and emitted laser light 8 is corrected to a luminous flux of parallel rays by the collimator lens 7 and is sent. That is, optical fibers 4 to 6 are effectively arranged like one point when being bundled because they are very narrow. Consequently, the redundant system of many laser diodes is constituted.
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