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Naoki MIYASHITA
Article type: Article
Session ID: 4036
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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National Institute of Information and Communications Technology (NICT) has been proposing OMS (Orbital Maintenance System) for this decade, which is a rescue-and removal satellite-servicing system for telecommunications satellites, and has conducted research on related technologies. One of the biggest challenges in on-orbit maintenance is the development of autonomous rendezvous technologies. The rescue satellite must be able to approach the target satellite before it falls out of orbit. To do this, the rescue satellite must first recognize the target and determine its relative position. To achieve these technologies, NICT is now developing high-performance image capture and analyzing unit called a Diverse Information Visioning Extension Camera (DIVE-CAM). This paper describes the concept and development of the DIVE-CAM Engineering Model.
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Yuuki IWAKI, Tetsushi NAGANUMA, Tsuyoshi TOTANI, Harunori NAGATA
Article type: Article
Session ID: 4037
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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The one-dimensional analysis has been performed using the analysis program for the flow of the propellant and the wall temperature of Laval nozzles. The material of the nozzles is A5056 and the propellant is water. In the case that the diameter of the nozzle inlet is 0.6 mm, the diameter of the throat is 0.1 mm, the mass flow rate of the propellant is 1 g/min, the inlet temperature of the propellant and wall are 500 K, Outlet pressure of the propellant is 400 Pa, the radial thickness of the nozzle is 2 mm, and the length of the divergent nozzle is 36 mm, the 151 s of the specific impulse has been achieved whereas the specific impulse with an adiabatically change is 137 s.
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Masashi WAKITA, Koichi YONEMOTO, Shigeru ASO, Yuji KOHSETSU, Harunori ...
Article type: Article
Session ID: 4038
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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The project of Winged Experimental Rocket described here is a proposal by the alliance of universities (University Consortium) expanding and integrating the research activities of reusable space transportation system performed by individual universities, and is the proposal that aims at flight proof of the results of advanced research conducted by the universities and JAXA using the university-centered experimental launch systems. This paper verifies the validity of the winged experimental rocket by surveying the technical issues that should be demonstrated and by estimating the airframe scale, weight and structural type. To minimize the development risks of winged experimental rocket, two kinds of airframe with different scales are developed.
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Shigeru KAJI, TAKUTA Shidooka, Yu HIROKI, Koichi YONEMOTO
Article type: Article
Session ID: 4039
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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Current sounding rockets in foreign countries including Japan are launched for the purpose of scientific observation of outer space or upper atmosphere, but are scrapped after completing the missions. Therefore, development of reusable sounding rockets is urgent. The Space Systems Laboratory of Kyushu Institute of Technology has been studying the winged rocket development program as a research subject of fully reusable space transportation systems since 2005.This fiscal year, the flight experiment of a small scaled winged test rocket was conducted for the first time to investigate the attitude controllability of ascent phase. The development of onboard navigation, guidance and control system using navigation data from GPS, air data from pitot tube, attitude data from IMU and recording to ROM was successful. After improving the navigation, guidance and control system, the winged rocket will be launched again to evaluate the total flight control performance from launching to aiming point for recovery.
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Kenta Uejima, Mitsunori Itoh, Akihito Kakikura, Yudai Kaneko, Kazuhiro ...
Article type: Article
Session ID: 4040
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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In order to enlarge the system of CAMUI hybrid rocket, it is essential to estimate its performance with a minimum of combustion experiments to reduce research and development costs. The authors had built up "Prediction Model for Startup Characteristic", which simulate the pressure history of each part of the system, and "Fuel Regression History Model", which predict the weight and shape history of fuel under combustion. In this study, the authors combined the two models mentioned above, and built up the program that predict the pressure history of each part of the system, and the weight and shape history of the fuel directly from the initial parameters. The result obtained by the program agreed well with the experimental value and got adequacy. With the program, the authors designed the CAMUI fuel grain which realize the optimal fuel flow rate on 90kgf thrust class motor, of which fuel has not been optimized yet.
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Yudai KANEKO, Mitsunori Itoh, Kenta UEJIMA, Tsuyoshi TOTANI, Harunori ...
Article type: Article
Session ID: 4041
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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A series of the firing rest was conducted to obtain the history of the instantaneous value of the fuel thickness during the firing test. An ultrasonic pulse-echo method was used to the firing test for that purpose. Gaseous oxygen and polyethylene were used to the firing test about the combustion of the solid fuel in the oxygen jet collision area. A preliminary experiment revealed that the variation of the propagation time caused by the change of fuel temperature is negligible small because the thermal boundary layer in the solid fuel is thin. The fuel regression rate at the stagnation point of oxidizer jet depends on Reynolds number.
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Toshiyuki ITO, Humio TOHYAMA, Kyouiti NAKASHINO
Article type: Article
Session ID: 4042
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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K-class hybrid rockets are usually retrieved with parachutes. At the parachute opening phase, the rocket body receives large impact load that causes, in some cases, destruction of the primary structure of the rocket. In this paper, we discuss structural design of K-class hybrid rockets with load analysis of parachute opening shock.
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Toshiya Sugita, Fumio Tohyama, Kyoichi Nakashino
Article type: Article
Session ID: 4043
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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In recent years, small hybrid rocket experiments are actively carried out by students in Japanese universities. In the experiments, rockets are usually retrieved by a mounted parachute. In the inflation process, however, the rocket structures experience considerable opening shock load, and in some cases, result in destruction of the primary structure. In this paper, we describe the opening shock load with the acceleration data acquired by sensor mounted on two hybrid rockets. We also discuss the design and the performance of the shock absorber system.
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Kota FUJIHASHI, Hiroki ASHIDA, Junichi NISHIDA, Shinichi INAGAWA, Yosh ...
Article type: Article
Session ID: 4045
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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The fourth small satellite project named "TSUBAME" has started by Lab for Space Systems (LSS) at Tokyo Institute of Technology. TSUBAME is the size of 30cm x 30cm x 30cm and weight of 30 kg. It has scientific and engineering missions: polarized X-ray observation of gamma ray burst by changing the attitude at high speed with CMGs. In this paper, an overview of TSUBAME and current status and future direction are introduced.
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Nobutada SAKO, Yoichi HATSUTORI, Takaya INAMORI, Shinichi NAKASUKA
Article type: Article
Session ID: 4046
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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Intelligent Space Systems Laboratory, The University of Tokyo (ISSL) and National Astronomical Observatory of Japan (NAOJ) have been developing a small infrared astrometry satellite named "Nano-JASMINE". This is about 50cm cubic and 20kg size and a precedent technical demonstration satellite of JASMINE Project which is programmed by NAOJ and JAXA. Since there has been only one astrometry satellite HIPPARCOS by ESA in the past, Nano-JASMINE is also expected to achieve certain scientific results. In this project, ISSL aims to develop new advanced small satellite bus system which is comparable to large satellite. The performance is from 1 arcsecond attitude control accuracy to 1 mK thermal control. This paper describes about this satellite bus system and current development status.
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Takaya Inamori, Nobutada Sako, Casey Lambert, Youichi Htsutori, Kensuk ...
Article type: Article
Session ID: 4047
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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Nano-JASMINE (Nano-Japan Astrometry Satellite Mission for INfrared Exploration), a nano-satellite currently underdevelopment at Intelligent Space System Laboratory (ISSL) Univ. of Tokyo in cooperation with National Astronomical Observatory of Japan (NAOJ). The mission is to measure the 3D positions of stars to an accuracy of 1.8 mas. In order to get accurate star position data, Nano-JASMINE should be stabilized to less than 740 mas/8.8s (equivalent to 4e-7rad/s) accuracy during observation. Currently there are not sensors available for a nano-satellite to get accurate attitude information as is required by the mission. This research consider the method to determine and control attitude to a high accuracy in Nano-JASMINE mission.
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Tadashi FUJIO
Article type: Article
Session ID: 4108
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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Sumiyoshi MIZOKAMI, Kenkichi SATO, Yasuyuki SHIRAI, Takuro AKASAKA
Article type: Article
Session ID: 4110
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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Isambard Kingdom Brunel (1806-1859) had run the atmospheric railway commercially at southwest in England in the 19^<th> century. The railway was driven by pressure difference between front and rear of the piston in a pipeline laid between rails. The air in the pipeline in the front of piton was exhausted by vacuum pump at power stations. In order to re-apply a small size atmospheric railway system in Japan, as an eco-transportation usage, in this report, the authors tested running performance on steeper slope line and its mechanical relations between pipeline and piston using an atmospheric railway model.
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Yasumi OZAWA, Kiyoo TACHI
Article type: Article
Session ID: 4111
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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The Y-shaped lumbers of the chestnut trees were excavated at the Sakuramachi-Site in Oyabe City, Toyama, Japan in 1997. The Y-shaped lumbers of the Sakuramachi-Site were compared with the sledge relief of murals in Ancient Egypt, sledges excavated in Kitoragawa-Site of the Yayoi period in Higashiosaka City, Osaka Prefecture, Japan, and Shura excavated in Mitsuzuka Tumulus in Fujiidera City, Osaka Prefecture, fifth century Japan. It was confirmed that the Y-shaped lumbers of the Sakuramachi-Site is the oldest Shura in the world for the transportation of giant trees or stones under the assumption that the Y-shaped lumbers at the Sakuramachi-Site are Shura. Giant chestnut trees were excavated at the Sakuramachi-Site in Oyabe City, Toyama, Japan in 1988. It is thought that the people of the Jomon period about 4000 years ago used the Y-shaped lumbers to transport heavy items such as giant trees. Giant trees excavated at the Sakuramachi-Site are discussed in this paper.
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Tokuro NAGAI, Takehiro AMANO, Hiroyuki AMANO
Article type: Article
Session ID: 4112
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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We investigated a water turbine for power to be left in old Garabo spinning mill in Toyota city, Aichi. It was installed in the Taisho era, and it was used until the shutdown in Showa 30's. The mill is converted, but a water turbine and the driveline installed below the floor are still in almost condition at the time of the operation. It is a rare industrial heritage showing that a water turbine was used for the Garabo spinning mill.
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Hideki ONODERA
Article type: Article
Session ID: 4113
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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At the end of Edo era, many western technologies were imported to Japan. However, the philosophy for industrial development of Japan was completely different from western countries. In western countries, society is supported by the linkage of mass manufacturing by industry and mass consumption by ordinary people. On the other hand, only demanded amount of products were manufactured in Japan, mainly using recycled materials. At the time, modem western blast furnace were constructed at Kamaishi, in Northeastern Japan. This furnace had almost similar dimension as shown in western textbook. However, surrounding building and the watermill for driving blowers were Japanese traditional style. This situation was different from the technology transfer at Meiji period. In this report, the reason of this difference are discussed to clarify the difference of the Japanese traditional manufacturing philosophy from western one.
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Yorikazu SHIMOTSUMA, Masanori OGATA, Nobuko SHIOTSU
Article type: Article
Session ID: 4114
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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Roman Ruins of Perge in South Turkey was surveyed on August 21, 1998. Ancient Roman Technology was researched. Wheel ruts by Roman chariots were discovered at stone pavement of the main road. Measured gauges are 1440+10mm, and they nearly equal to present international standard railway gauge of 1,435mm (4 ft 8.5 in). It is thought that there is the origin of the railway gauge to the wheel rut of the Roman chariot.
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Ichiro Tsutsumi
Article type: Article
Session ID: 4115
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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In this report, cast iron columns for railway foot bridges built by the Shinbashi Railway Works and their significance on the history of technology will be explained. Contents of this report are as follows. 1) Short history of the Shinbashi Railway Works of I.G.R.J.. 2) Design regulations for railway foot bridges with cast iron columns prescribed by the Railway Agency of Japan (R.A.J.) in the Meiji period. 3) Results of field survey on the cast iron columns for railway foot bridges built by the Shinbashi Railway Works in the Meiji period remain at some railway stations, and significance on the history of technology.
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Masashi YOSHIDA
Article type: Article
Session ID: 4201
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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The purpose of the program is education of engineers who can work in the international community through the academic exchange with Harbin institute of technology in Weihai (China) and Dong-Eui institute of technology (Korea) and cooperation with the economic activity of the "Union of the Machinery industrial cities in North-East Asia" which has been established since 2004 among Ube and 9 cities in north-east Aasia.
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Masashi KUROSE, Kiyoaki HASUMI, Masahiko KOTOBUKI, Naoaki WASADA
Article type: Article
Session ID: 4202
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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In our college, the educational programs of mechanical design with 3D-CAD/CAE/CAM systems started for a graduation thesis at departments of mechanical engineering. Furthermore, the practical training on manufacturing, students learned new design tools, by means of Problem Based Learning method. This reports the outline and the results in the program.
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Shuya KAMEI, Eiichi OSAWA, Katsumi FUKUDA
Article type: Article
Session ID: 4203
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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That is a wonderful thing to cooperate between gland senior and children of elementary school two graders. The cooperation is to play each other by the toy used in the encient. Using the plaything from the encient, children more pleasantly are guided by senior to play the technology of using it in each room. Their encient plays are bamboo dragonflies, top, cat's cradle, beanbags and marbles, etc. After various play, each several sinior people happily participate in each class of two graders. We enjoy to eat and talk with children in respect the school meal service which the pupil prepared on the table. And finally, we learned the ordering method of meal and fractionation of the container from the pupil.
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Chiaki NAGAI, Takashi YOSHII, Atsushi HIRANO, Hisao YATSUDA, Namio IKO ...
Article type: Article
Session ID: 4204
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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We started a new educational attempt by means of industry-academia collaboration on Kobe municipal technical high school by METI and Ministry of Education grants. Our activities are mainly comprised of students' internship and practical teaching by company people. We are trying to improve high school subjects, such as basics of industrial technology or technical training by the aids of small & medium enterprises in Kobe city area. This paper summarizes and describes results of 1^<st> year activities and problems to overcome.
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Kazuo KADOTA
Article type: Article
Session ID: 4205
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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The course of machine design in Tokyo Tech High Shcool develops engineers in mechanical engineering by offering students a solid foundation in basic academic skills and education filled with adaptability and creativity. One of the subjects, we teach control and systems engineering using Programmable Logic Controller. In this subject, students learn the basis of sequence control and how to use the pneumatic system, and create an automatic machine, such as walking robots and a food machinery. This paper describes these educational practices which have focused on the teaching method of sequence control of using PLC.
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Kiichi YOSHIDA
Article type: Article
Session ID: 4206
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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NHK Robot Contests in College of Technology are carried out and are broadcasted on the television every year. For winning this Robot Contest, the stream that the game is allowable if the game is not against the rules is seamed. In this report, NHK Robot Contest in College of Technology and engineer ethics are discussed.
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Shunsuke Matsuoka, Tetsuji Ohkashiwa, Hiroshi Konno
Article type: Article
Session ID: 4207
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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This Paper reports the experiment of microcomputer education at the department of mechanical systems engineering, Asahikawa national college of technology. We developed microcomputer training kit for beginners and was practices at the work experiment for the student. In the graduate study, a line trace robot was made in for learning in Mechatronics. systems.
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Yoshitaka KATO, Toshio GOTO
Article type: Article
Session ID: 4208
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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Science education and technology education to many schoolchildren had done during short time, and stirling engines used as education equipments were hand-crafted-model-stirling engines and the can-stirling engine which is newly proposed in the event of science education. The targets of those acts were not only schoolchildren, also school teacher and parents. Themes of special lecture as special lecture to schoolchildren were to tell pleasure of study and importance of objective explanation. Training of objective explanation was done using hand-crafted-model-stirling engine. Amount of explanation schoolchildren wrote increased into over three times by a few minutes advice. In event of science education, the explanation of the way how to make newly proposed can-stirling engine is distributed.
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Makoto NISHI, Sinichi TANIGUCHI
Article type: Article
Session ID: 4209
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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The academic ability of freshman widely spreads due to the variety of learning experience at high school. This research introduced a system based on team learning to improve this problem. Team learning was introduced into the class to develop this system. How to untie a practice problem is explained each other between the students in the team learning. The experiment with which a student can participate aggressively was put into effect in the team learning Intelligibility improvement to the class of the student was tried from these methods. As a result it became clear that vanity and team learning are useful for improvement of understanding of the class of the student.
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Shigeru WESUGI, Takabumi WATANABE, Yoshiyuki MIWA
Article type: Article
Session ID: 4210
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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The significance of a technology integrating separate mechanical systems with one another via the Internet will increase ever more. To address such social requests, authors designed and conducted an educational experiment for learning a mechanical system utilizing the Internet for the junior in the department of modern mechanical engineering. In the experiment, after a short lecture on the Internet technology and on the structure of the networked mechanical system which authors developed for the experiment, every student designed and constructed a system for monitoring a remote place via a sensor and controlling a remote servomotor by utilizing a mobile-phone. Finally, each student made a presentation on the system. Results of questionnaire indicated that the experiment increased interests in the Internet technology for mechanical system.
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Monndo OGAWA, Kenkichi SATO, Hiroyuki SHIBUYA, Saburo MORIWAKI, Hideto ...
Article type: Article
Session ID: 4211
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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This paper describes an overview on a workshop training for students of the Annex School for Handicapped Children, Faculty of Education, Chiba University. The workshop was carried out as the annual meeting of schools for handicapped children teachers in Japan. The workshop was aimed at offering monodzukuri work and training for making something together. In this training, environmentally friendly blade of a wind turbine was selected as the object by the children. The authors assisted to their work and act for making biodegradable blades made from kenaf cloths woven by students and PLLA (poly-L-lactic acid, biodegradable plastic) with a hot press and cutting. The put in wind turbine turned and generated electricity turned on lights in the working room.
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Tomoaki SATO
Article type: Article
Session ID: 4212
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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Recently 3D-CAD system is spreading over the drawing education. The 3D-CAD system is very effective on the drawing education because the students can recognize the shapes and the structures of the drawing objects directly by the editing screen of 3DCG. On this study the easy and low cost method of the stereo visualization for educational 3DCG-Animation has been developed. The stereo visualization system is composed of two ordinary liquid crystal projectors, a personal computer and a silver screen. The data of 3D-CAD system can be used on the stereo visualization system. In this paper, the using method of the data of 3D-CAD for the stereo visualization system is introduced.
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Hironobu YUKI, Tomoki SEKIGUCHI
Article type: Article
Session ID: 4213
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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We have been developing a computer assisted instruction (CAI) system which can be used to gain the better understanding of mechanisms. The system provides an virtual environment for making mechanisms by regarding mechanical elements as simplified blocks. The mechanism which is constructed out of such blocks can be shown on the computer display from different angles in any scale. The motion of the mechanism can be also displayed in the form of animation. In this study, a new block corresponded to a slider-crank mechanism was implemented to the system. The functions of edit, changing the field size, and optional blocks were added to the system for improving the user interface. A few examples of using the system were demonstrated.
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Hiroshi HONDA
Article type: Article
Session ID: 4214
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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The current report presents the results of survey on interests of the course attendees in the industry sectors, and discusses how these may be influenced and changed from the beginning to the end of the semester.
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Ryozo ISHIWATA
Article type: Article
Session ID: 4215
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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The phenomena with relation to fluid mechanics are often taken up in books on science for popular readers. However, the explanation on principle of them has been described under misunderstood knowledge on fluid mechanics in many books. It seems the reason that the many authors are not understood fluid mechanics enough. Also, there is the further reason in the descriptions involved mistaken explanations in many books. In present study the mechanism of transmission of so misunderstood explanations has been considered, and the diffusion of them has been investigated. It is also examined and proposed how to prevent the transmission and diffusion.
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Toshikazu YAMAMOTO, Takahito HOSHINO
Article type: Article
Session ID: 4217
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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The research is development of teaching tools used for junior high school students at stirling cycle (the moving principle of stirling enegine). It is difficult to teach the principle though the structure is comparatively easy. They help for teaching it; "Teaching Tools for movement" "Teaching Tools for explanation" "Software" are developed. And the effects of teaching are verified at the class for experiments. As a result it is verified the fixing of knowledge about stirling cycle improved.
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Kazutoshi TOMINAGA, Yuji NAKANISHI
Article type: Article
Session ID: 4218
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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In 2006, Tokyo Metropolitan College of Technology and Tokyo Metropolitan College of Aeronautical Engineering were integrated into Tokyo Metropolitan College of Industrial Technology (TMCIT). Then TMCIT became a college with two campuses (Shinagawa Campus and Arakawa Campus). So we took up the manufacture of a sailboat which was able to sail between two campuses as a theme of "Monozukuri" education. For a half year, students of two campuses were became apprentices to a shipwright and build a wooden A-class Dinghy sailboat. Then they prepared for sailing the sailboat on the high seas and went on its maiden voyage. In this paper, we report a process of the manufacture of a sailboat and its maiden voyage, and then its educational effects are described.
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Keisuke YOSHIDA
Article type: Article
Session ID: 4219
Published: August 02, 2008
Released on J-STAGE: August 01, 2017
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As campus relocation of Kyushu University started, city formation of the place around the new campus began. The author is helping the city formation by the Organization for Promotion Academic City by Kyushu University (OPACK), which was established to promote the city formation, by collecting information on industry-university cooperation as a university professor. This research considers the relationship between the industry-university cooperation and the contribution to society by university from the point of view of mechanical engineering in accordance with the experience and information obtained by the author's activities in this organization, and tries to find the ideal way of the industry-university cooperation. This is the first report that presents circumstances and schedule of the campus relocation of Kyushu University at first, and the feature of the place in/around the new campus next, and circumstances of the establishment of OPACK and its activities at last.
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Article type: Appendix
Pages
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Published: August 02, 2008
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