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公开(公告)号：JP2000090031A
公开(公告)日：2000-03-31
申请号：JP25736398
申请日：1998-09-11
Applicant: ISHII TAKESHI , NAT AEROSPACE LAB , FUJITA NAOYUKI
Inventor： ISHII TAKESHI , FUJITA NAOYUKI
Abstract: PROBLEM TO BE SOLVED: To easily deal with an arbitrary data system. SOLUTION: The monitoring/controller of network communication is provided with a data collection/transmission processing part V11 transmitting/receiving packets (PT and PTA1) to/from a network 3, an analyzer managing part V12 provided with a hijack function which executes packet communication with the data collection/transmission processing part V11 based on analyzer managing information rewritten by a control message CM and which individually communicates with communicating persons by the packets (PT and PTA2) when injustice is detected in communication, a protocol processing part V13 reconstituting analysis data DT from the packet PTa and transmitting the control message CM and data DTA and an application analyzer V21 judging whether injustice does not exist in analysis data DT which is taken in and transmitting the control message CM and data DTA in accordance with the judged result.
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公开(公告)号：JPH11247882A
公开(公告)日：1999-09-14
申请号：JP5252498
申请日：1998-03-04
Applicant: NAT AEROSPACE LAB , SHIMIZU CONSTRUCTION CO LTD
Inventor： MATSUMOTO KOTARO , WAKABAYASHI SACHIKO , SATO HITOSHI , UENO HIROSHI , HARIMA KOICHI , YOSHIDA TETSUJI
Abstract: PROBLEM TO BE SOLVED: To provide a rotary joint simple in structure devised certainly to take avoiding motion when a load torque is excessive and free to flexibly follow to the load side. SOLUTION: A C type spring 8 as a cushioning material is arranged between engagement protruded parts 5, 6 for torque transmission of a primary side rotary member 3 and a secondary side rotary member 4 on a rotary joint to transmit torque from the primary side to the secondary side. The C type spring 8 clamps both of the engagement protruded parts between opening ends 8a, 8a and energizes both of the engagement protruded parts at a zero rotary phase difference position with a specified pre-load. This C type spring 8 allows a rotary phase difference between both of the engagement parts by elastically deforming at the time when torque exceeding the specified pre-load works between the both engagement parts. Additionally, torque is transmitted from the primary side to the secondary side in this state.
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公开(公告)号：JPH11200891A
公开(公告)日：1999-07-27
申请号：JP1317998
申请日：1998-01-08
Applicant: NAT AEROSPACE LAB
Inventor： HAYASHI SHIGERU
Abstract: PROBLEM TO BE SOLVED: To always guarantee stable operation even when an operation condition of pressurized gas fluctuates by storing water unevaporated at water spraying time by a spraying nozzle in the bottom part of a cooler vessel, repeatedly using it, and replenishing water of a quantity taken away outside the vessel as steam. SOLUTION: In a cooler used when exhausting pressurized gas in the atmosphere, and particularly in a cooler in pressurizing combustor testing equipment used to develop a combustor of a jet engine and a gas turbine, a water spraying nozzle 18 is arranged in the upper part of a cooler vessel, and the storage part 21 is formed in the vessel bottom part 21 so that both 18 and 21 are connected by piping 22 in which a force feed pump 17 is interposed. The cooling is performed by contacting spray water from the water spraying nozzle 18 with high temperature gas, and water unevaporated at this time is stored in the storage part 21 to be repeatedly used. Water is replenished by a transporting pump 25 when the fact of a preset level or less is detected by detecting a water surface position 23 of this storage part 21 by a water level gauge 24.
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公开(公告)号：JPH11177165A
公开(公告)日：1999-07-02
申请号：JP35632897
申请日：1997-12-10
Applicant: NAT AEROSPACE LAB
Inventor： TAKIZAWA MINORU
IPC: H01S3/083
Abstract: PROBLEM TO BE SOLVED: To raise excitation efficiency and to miniaturize a device, by extending excitation action distance of a solid state laser element of excitation light. SOLUTION: Related to a laser resonator comprising a solid state laser element LR and a plurality of high-reflectivity mirrors M1 and m, an in-element passage optical path wherein a resonation laser light is made incident on the surface of solid state laser element LR from non-vertical direction, reflecting on a rear surface for out-going from the surface is provided for excitation action distance more than element's thickness, while the light having an optical axis vertical to an element surface is emitted from a near point through the near surface side of the solid state laser element, which is the outside of a laser resonation path for efficient excitation of the solid state laser element LR.
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105.发明专利
公开(公告)号：JPH1137944A
公开(公告)日：1999-02-12
申请号：JP20735197
申请日：1997-07-17
Applicant: NAT AEROSPACE LAB , JAPAN RES DEV CORP
Inventor： ASAI KEISUKE
Abstract: PROBLEM TO BE SOLVED: To obtain an oxygen sensor exhibiting a high oxygen sensitivity in an atmosphere from low to normal temperature in which a film of fluorescent substance having an extremely high oxygen sensitivity can be formed easily in cryogenic and normal temperature atmosphere, and to measure the pressure distribution accurately and easily at high sensitivity using the oxygen sensor in a trace oxygen low temperature atmosphere, e.g. low temperature wind tunnel or high layer atmospheric environment. SOLUTION: A porous oxide film is formed electrochemically on in an electrolyte on the surface of a basic metal material 1 using the basic metal material 1 as an anode 4. The basic metal material 1 formed with the oxide film is then immersed, as a cathode 1, into a solution 13 of an optical pumping substance having oxygen-sensitive characteristics. Consequently, the oxygen-sensitive is adsorbed electrochemically into fine pores in the oxide film and a film of a light emitting substance having an extremely high oxygen sensitivity can be obtained without requiring any oxygen transmitting resin.
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Patent Agency Ranking
公开(公告)号：JPH1123604A
公开(公告)日：1999-01-29
申请号：JP18891597
申请日：1997-07-01
Applicant: NAT AEROSPACE LAB
Inventor： TAKIZAWA MINORU
Abstract: PROBLEM TO BE SOLVED: To obtain a ring laser flow meter for measuring the flow velocity of a transparent fluid precisely by eliminating generation of a beat frequency due to effect in a place involving an angular speed of a turning aircraft, for example. SOLUTION: A ring resonator 3 comprising a plurality of high reflection mirrors arranged to form a closed optical path has an 8-shaped ring laser oscillation optical path wherein the area surrounded by two closed optical paths intersecting at one point are identical. Consequently, even if an angular speed is generated around an axis passing through the plane surrounded by two closed optical paths, Sagnac effect of same magnitude takes place in opposite direction in two closed optical paths. Since the Sagnac effect is canceled for the entire ring laser, the flow velocity of a transparent fluid can be measured precisely even in a place involving a rotation.
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公开(公告)号：JPH10311773A
公开(公告)日：1998-11-24
申请号：JP13593997
申请日：1997-05-09
Applicant: NAT AEROSPACE LAB , KAWASAKI HEAVY IND LTD
Inventor： YANAGI RYOJI , KANBE KATSUHIRO , FUTAMURA HISAO , OSHIMA TAKAO , ENOMOTO KICHIYA , UTANO MAKOTO
IPC: G01M9/00
Abstract: PROBLEM TO BE SOLVED: To estimate or detect the movement amount and the position of a shock wave in real time by using a simple system by a method wherein pressures in an air introduction passage are measured at constant intervals. SOLUTION: A shock-wave-position estimation apparatus is constituted of a pressure measuring part 10 in which pressure sensors 11 in the required number are arranged at prescribed intervals on the sidewall of an air introduction passage (an intake) I, of a shock-wave-position estimation part 20 and of an output part 30. Then, the estimation part 20 is constituted of, a microcomputer, and the position of a shock wave is estimated or the like on the basis of the measured value of the measuring part 10. Then, in the estimation part 20, the differential pressure between pressures of sensors 11B, 11A before and after a sensor 11L which detects the lowest pressure of the measuring part 10, and the lowest pressure is found. A part between 1 and 2 before and after the sensor 11L is proportionally distributed by the differential pressure, and the position of the shock wave is estimated or detected. In this manner, the position of the shock wave can be estimated or detected in real time by a simple processing operation. When the position is estimated or detected continuously, the movement amount of the shock wave can be estimated or detected.
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公开(公告)号：JPH10311245A
公开(公告)日：1998-11-24
申请号：JP13593897
申请日：1997-05-09
Applicant: NAT AEROSPACE LAB , KAWASAKI HEAVY IND LTD
Inventor： YANAGI RYOJI , KANBE KATSUHIRO , FUTAMURA HISAO , OSHIMA TAKAO , ENOMOTO KICHIYA
IPC: F02K7/10
Abstract: PROBLEM TO BE SOLVED: To provide a method and a device for controlling a ram jet to effect stable combustion at a ram burner in spite of simple constitution. SOLUTION: An impact wave position calculating means and an exhaust nozzle control means comprise, for example, a pressure measuring part 10; a control device body 20; and a nozzle flap drive device 30. The impact wave position calculating means calculates the position of the impact wave S of an intake I based on pressure distribution of the internal part of the intake 1. The exhaust nozzle control means calculates the deviation of the position of the impact wave S calculated from a given position and the angle of a variable exhaust nozzle N is regulated such that the deviation is eliminated.
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公开(公告)号：JPH10203876A
公开(公告)日：1998-08-04
申请号：JP1981097
申请日：1997-01-17
Applicant: NAT AEROSPACE LAB , TOHO RAYON KK
Inventor： OGAWA AKINORI , HASHIMOTO RYOSAKU , NIIJIMA KENJI , HAYASHI MASAHIRO
Abstract: PROBLEM TO BE SOLVED: To obtain a C/C high-speed rotator of increased mechanical strength by considering the laminating method for C/C sheets for the final purposed so as to afford pseudoisotropic elasticity in the in-plane direction of the C/C sheets, and to provide a method for producing the aimed high-speed rotator. SOLUTION: This C/C high-speed rotator is obtained by the following steps: (1) prepreg sheet are prepared; each of which is produced by impregnating a resin into a carbon fiber sheet =3) in laminating pitch angle along with being even number times of (n) in the laminating number; (3) the resulting laminated sheet is cured; (4) the sheet is then impregnated with a resin followed by carbonization; this processing are carried out several times; (5) subsequently, the resultant prepreg sheet is graphitized; thus obtaining the objective C/C high-speed rotator with a high mechanical strength and a large number of revolutions before it breaks.
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公开(公告)号：JPH10185538A
公开(公告)日：1998-07-14
申请号：JP35580996
申请日：1996-12-25
Applicant: NAT AEROSPACE LAB
Inventor： TAGASHIRA TAKESHI , SUGIYAMA SHICHIKEI
Abstract: PROBLEM TO BE SOLVED: To realize an easy noncontact measurement of the dimensions of a radial or axial gap of a metallic or nonmetallic rotator even in a dirty environment. SOLUTION: The inventive equipment comprises an ultrasonic sensor 3 for generating an ultrasonic pulse and receiving the reflected wave thereof fixed in the radial direction of a rotator or the direction of an axial gap thereof, and a sensor 5 for removing the effect of a resonance wave from the output signal of the ultrasonic sensor 3 upon excitation thereof and detecting the temperature in the gap. Sound velocity in the gap variable with the temperature is then calculated and then the dimensions of the gap are calculated based the time interval between transmission and reception of the ultrasonic pulse derived from the noise-free output signal, and the calculated sound speed.
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