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公开(公告)号：JP2002308189A
公开(公告)日：2002-10-23
申请号：JP2001116263
申请日：2001-04-16
Applicant: FUJI HEAVY IND LTD , NAT AEROSPACE LAB
Inventor： HASHIMOTO KATSUHISA , SANO MASAAKI
Abstract: PROBLEM TO BE SOLVED: To provide a float gas exhaust valve suited to an airship and a balloon staying in a high altitude in a stratosphere for a long time and performing a meteorological observation. SOLUTION: A helium gas pressure is constantly applied to a valve cover 8 of this exhaust valve 1 so that this exhaust valve 1 retains a valve-closed state. In this case, if a large press force is applied from a leg part 8c of the valve cover 8 to a valve seat 2 via a valve cover receiving plate 5, the valve seat 2 is supported on a filler mouth ring 4 and the rigidity of the valve seat is enhanced so that the valve seat 2 hardly causes deflection and the internal pressure of the airship 3 is enhanced to enable the long-time stay in air. When the altitude of the airship 3 is adjusted or the internal pressure increase too much, the valve cover 8 is moved in the valve-opening direction by an actuator 6, the helium gas in the airship 3 is quickly exhausted along a curved current plate 9 in an arrow A direction in Fig, and energy loss in a channel is thus prevented so as to improve the exhaust efficiency.
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公开(公告)号：JP2002173092A
公开(公告)日：2002-06-18
申请号：JP2000372672
申请日：2000-12-07
Applicant: NAT AEROSPACE LAB , FUJI HEAVY IND LTD
Inventor： YOKOMAKU YOSHIO , SANO MASAAKI , OYAGI TAKAHARU
Abstract: PROBLEM TO BE SOLVED: To provide an airship and a method for floating/starting it allowing simplifying and lightening/miniaturizing of a structure as well smoothly floating and flying. SOLUTION: Inside an air sac 2 of the airship 1 is partitioned into a floating gas containing part 11 and an air containing part 21 by a barrier 10 with a size allowing contact with an inner circumferential ace of a skin 3. Floating gas inside the floating gas containing part 11 expands for making the buoyancy center B of a hull corresponding approximately to the gravity center G in a plan view when straying in the air in a horizontal attitude and setting the gravity center G below the buoyancy center B. The gravity center G moves near to the buoyancy center B by changeably controlling a ratio of an air volume and a floating gas volume inside the air sac 2 by floating/starting the airship 1 in a vertical attitude and discharging air inside the air containing part 21 via an air pressure regulating valve 24 for controlling the airship 1 in the horizontal attitude.
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公开(公告)号：JP2001199397A
公开(公告)日：2001-07-24
申请号：JP2000010984
申请日：2000-01-19
Applicant: NAT AEROSPACE LAB , FUJI HEAVY IND LTD
Inventor： YOKOMAKU YOSHIO , KOMATSU TAKAYA , SANO MASAAKI , KIMURA JUNICHI
IPC: B64B1/58
Abstract: PROBLEM TO BE SOLVED: To provide an airship for the stratosphere capable of stably flying to the stratosphere and staying in it, by largely and smoothly changing buoyant gas volume. SOLUTION: The airship for the stratosphere is raised by partitioning the inside of an air bag 10 formed with a hull envelope 11 to a buoyant gas storing part 20 and an air storing part 30 with a flexible film 12, and changing volume ratio of the buoyant gas to the air. The outer periphery of the flexible film 12 is jointed along an intermediate height position of the hull envelope 11, and its central part is joined to and supported by a suspension rope 13 of which upper and lower ends are joined on the upper surface and the lower surface of the hull envelope 11. A sloshing phenomenon of the flexible film 12 is suppressed to change the shape in a balance holding state, smooth change of the volume ratio of the buoyant gas to the air in the air storing part can be performed without deflective existence of the buoyant gas, and stably flying to the stratosphere and staying in it are allowed.
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Patent Agency Ranking
公开(公告)号：JP2002308186A
公开(公告)日：2002-10-23
申请号：JP2001116253
申请日：2001-04-16
Applicant: FUJI HEAVY IND LTD , NAT AEROSPACE LAB
Inventor： HASHIMOTO KATSUHISA , YOSHIZAWA HIROYUKI , SANO MASAAKI
IPC: B64B1/48
Abstract: PROBLEM TO BE SOLVED: To provide an airship descending method and its device capable of safely and quickly recovering various types of mounted equipment and record data of observations and researches. SOLUTION: When receiving a recovery signal, an outer film of the airship A is burnt out (S1) and the fractured airship A descends. When the descent reaches a first altitude, a pilot chute 18 is flared (S2) so that a drag chute 17 is drawn out and flared by air resistance acting on the flared pilot chute 18 and the pilot chute 18 is separated therefrom (S3). When descending to a second altitude, a main parachute 16 is drawn out and flared and the drag chute 17 is separated therefrom (S4). After landing or landing on the water, the main parachute 16 is separated from the airship A and various types of the equipment and record data of the observations and researches mounted on the airship A are recovered.
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公开(公告)号：JPH0580398B2
公开(公告)日：1993-11-08
申请号：JP20486387
申请日：1987-08-18
Applicant: NAT AEROSPACE LAB
Inventor： SANO MASAAKI , KOMATSU TAKAHARU , KIDA TAKASHI
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公开(公告)号：JP2002087395A
公开(公告)日：2002-03-27
申请号：JP2000283588
申请日：2000-09-19
Applicant: NAT AEROSPACE LAB , FUJI HEAVY IND LTD
Inventor： SANO MASAAKI , ONDA MASAHIKO , KIMURA JUNICHI
IPC: B64F1/14
Abstract: PROBLEM TO BE SOLVED: To provide a method and device for making an airship take off, ensuring a smooth climb even by small propulsion while maintaining control stability. SOLUTION: An airship take off device 20 holes the airship 10 in horizontal attitude by using bow supporting means 35 and stern supporting means 46 for fixing a bow 11 and a stern 12, respectively, of the airship 10 in horizontal attitude. In the condition that the airship 10 is held in horizontal attitude with the bow 11 and the stern 12 fixed by using the bow supporting means 35 and the stern supporting means 12, the fixation of the bow 11 with the bow supporting means 35 is cancelled to make the bow 11 floated by the buoyancy of a floating gas stored in the airship 10 and make the airship 10 moved from horizontal attitude into vertical attitude, and then the fixation of the airship 10 in vertical attitude at its stern 12 with the stern supporting means is cancelled to make the airship 10 fly in vertical attitude.
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公开(公告)号：JP2002002595A
公开(公告)日：2002-01-09
申请号：JP2000182005
申请日：2000-06-16
Applicant: NAT AEROSPACE LAB , FUJI HEAVY IND LTD
Inventor： YOKOMAKU YOSHIO , KOMATSU TAKAYA , SANO MASAAKI , HARADA MASASHI , KIMURA JUNICHI
Abstract: PROBLEM TO BE SOLVED: To provide an airship capable of ensuring pressure-resistance to pressure difference between the inside and the outside of an air sac without increasing weight, and obtaining sufficient buoyancy ability. SOLUTION: Outer film material 3 of the air sac 2 storing levitation gas is bound with a plurality of longitudinal bands 11 extending in a longitudinal direction of the air sac 2 and a plurality of latitudinal bands 12 extending in a circumferential direction of the air sac 2, and a divided curved surface 4 bulging outward is formed by the outer film material part surrounded by the longitudinal bands 11 and the longitudinal bands 12. Inner pressure is shared and supported by a plurality of the longitudinal bands 11 and the longitudinal bands 12 to keep the shape of the air sac 2, and the outer film material 3 is formed by divided curved surfaces 4 having a small radius of curvature, so that tension acting on the outer film material 3 is decreased. Consequently, weight is reduced by thinning the outer film material 3, thereby improving buoyancy ability.
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公开(公告)号：JPS6448945A
公开(公告)日：1989-02-23
申请号：JP20486387
申请日：1987-08-18
Applicant: NAT AEROSPACE LAB
Inventor： SANO MASAAKI , KOMATSU TAKAHARU , KIDA TAKASHI
Abstract: PURPOSE: To damp vibrations by forming a vibration-isolation device which is provided with a first permanent magnet arranged inside a hollow housing, a coil wound on a second permanent magnet sliding along a core extending through the center, and a current supply portion for the coil. CONSTITUTION: A column member 2 of a vibration-isolation device 3 is formed by hermetically coupling a non-magnetic housing 4 and both ends of a core 5 extending through the center in the housing 4. Further, a first permanent magnet 6 is arranged along the internal wall of the housing 4, and a slidable permanent magnet 7 is disposed along the peripheral surface of the arbor 5, followed by winding a coil 8 on the magnet 7. Then, a spring 9 formed of a conductive material is provided such that one end thereof is in contact with the magnet 7 and the other end thereof is in contact with an end wall of the housing 4. Further, the one end of the spring is electrically connected to the coil 8 and the other end of the same is connected to a power source via a current supply control arithmetic section. In this manner, driving current applied to the coil 8 having a dynamic mass is made into a special pulse, whereby a large braking force can be obtained with respect to ultra low frequency vibrations.
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