著者

Shin-ichiro SASAHARA Yuichi OI Shotaro DOKI Daisuke HORI Yuh OHTAKI Christina-Sylvia ANDREA Tsukasa TAKAHASHI Nagisa SHIRAKI Yu IKEDA Tomohiko IKEDA Ryutaro IZUMI Tamaki SAITO Ichiyo MATSUZAKI

出版者

THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

雑誌

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN (ISSN:18840485)

巻号頁・発行日

vol.18, no.5, pp.180-185, 2020 (Released:2020-09-04)

参考文献数

32

被引用文献数

1

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Over the past few years, the number of Japanese astronauts recruited for a long-term stay in the International Space Station (ISS) has increased. Being on a prolonged mission with the same people, in the same room, should impose psychosocial stress on the astronauts, possibly causing feelings of “psychological suffocation”. Several confinement studies have been conducted to simulate the conditions of the ISS, the Mir space station, and potential habitats on Mars, and to survey psychological interpersonal communication between the crew in a confined environment, including the Isolation Study for European Manned Space Infrastructure, Experimental Campaign for the European Manned Space Infrastructure, Simulation of Flight of International Crew on Space Station, Human Behavior in Extended Spaceflight, Mars-500, and Hawaii Space Exploration Analog and Simulation. Here, the findings from these studies were integrated into a structured review according to an evidence-based set of items for reporting in systematic reviews and meta-analyses. The results indicated that metaanalyses would not always be appropriate because it is difficult to design a research protocol with a high level of evidence in this field. Therefore, future research in this field should be focused on the following three points: 1) developing more accurate parameters for monitoring stress levels in long-term confinement environments; 2) analyzing stress levels in such situations with higher precision; and 3) accumulating and assembling existing and future data from long-term confinement environments.

著者

Frank JANSEN Waldemar BAUER Frédéric MASSON Jean-Marc RUAULT Jean-Claude WORM Emmanouil DETSIS Francois LASSOUDIERE Richard GRANJON Enrico GAIA Maria Cristina TOSI Simona FERRARIS Anatoly S. KOROTEEV Alexander V. SEMENKIN Alexander SOLODUKHIN Tim TINSLEY Zara HODGSON Christoph KOPPEL Lamartine Nogueira Frutuoso GUIMARÃES

出版者

THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

雑誌

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN (ISSN:18840485)

巻号頁・発行日

vol.14, no.ists30, pp.Pb_225-Pb_233, 2016 (Released:2017-02-08)

被引用文献数

5

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The European Commission Horizon 2020 funded DEMOCRITOS project (2015-2017, see under democritos.esf.org) will be primary focused to prepare preliminary design of the ground, core and space demonstrators and their test benches for the mega-watt class nuclear electric space propulsion INPPS flagship (International Nuclear Power and Propulsion System). In addition programmatic, organizational and funding aspects for international cooperation related to INPPS realization are sketched. The new project includes partners from Europe, Russia and the Brazilian guest observer IEAv and is the follow-up of the mega-watt class nuclear electric propulsion European-Russian MEGAHIT project (www.megahit-eu.org). Europe already established the high power nuclear MEGAHIT and the low power nuclear (20 to 200 kW NEP) DiPoP (www.DiPoP.eu) roadmaps. Because Europe has started the implementations for INPPS flagship in the 2030-2040 timeframe, both roadmaps will be also described – from MEGAHIT the INPPS technology options, the launcher, assembly and system architecture, space mission requirements, communications and public support. In case of DiPoP it will be explained the survey of European capabilities, technical options, potential space missions and the public acceptance as well.

著者

Yudai YUGUCHI Warley F. R. RIBEIRO Kenji NAGAOKA Kazuya YOSHIDA

出版者

THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

雑誌

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN (ISSN:18840485)

巻号頁・発行日

vol.14, no.ists30, pp.Pk_125-Pk_130, 2016 (Released:2017-02-08)

被引用文献数

1 5

---

The surface of an asteroid features an irregular terrain and microgravity. Therefore, robotic exploration in an asteroid requires the adoption of an appropriate locomotion strategy. Moreover, an exploration robot is expected to be capable of moving to an area of scientific interest. In response to this, we have proposed a ground grip robot that moves by gripping the surface like a rock climber. By gripping the surface, the robot can prevent unintended flotation and rotation while propelling itself across the surface. When the idling arm is moved while the supporting arm's gripper is attached to the surface, all of the reaction forces act on the gripper. If the gripping force is to be exceeded, however, the robot could come adrift from the surface. In this paper, therefore, we propose a motion control method that does not act the reaction force on the gripper by utilizing the reaction null-space. Additionally, the tip position trajectory is generated as an ellipse to enable smooth movement and eliminate any frictional force. This control law was validated by a planar dynamic simulation. The simulation model assumes a dual-armed robot with three degrees of freedom (DOF) in each arm, while the uneven surface is simulated under certain conditions. As a result, the robot was able to move continuously with reactionless motion and the propriety of the control law was confirmed.

著者

Yutaka WADA Yo KAWABATA Kenji OGIMOTO Hiroaki AKIYAMA Takao YANAGI Seiichi SAKAMOTO

出版者

THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

雑誌

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN (ISSN:18840485)

巻号頁・発行日

vol.16, no.6, pp.506-510, 2018 (Released:2018-09-04)

参考文献数

11

---

In this study, a reusable educational motor that can burn different types of materials in the chamber was developed. Specifically, five candidate sweets were selected as fuel and burnt. The combustion performances of these sweets were compared, and the soft candy was selected as the solid fuel to be used in the motor, because it had the highest total impulse. The SOUKI Systems Co. Ltd. designed a small candy hybrid rocket based on these results. The candy rocket was launched successfully using soft candy at the Kada Cosmo Park. The motor carried the candy rocket to 319 m altitude and was fully functional under the high-acceleration environment.

著者

Junichi HARUYAMA Shujiro SAWAI Takahide MIZUNO Tetsuo YOSHIMITSU Seisuke FUKUDA Ichiro NAKATANI

出版者

THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

雑誌

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN (ISSN:18840485)

巻号頁・発行日

vol.10, no.ists28, pp.Pk_7-Pk_10, 2012 (Released:2013-02-20)

被引用文献数

4 17

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The Japanese lunar orbiter SELENE discovered three giant holes, Marius Hills Hole, Mare Tranquillitatis Hole, and Mare Ingenii Hole, that exceed tens of meters in diameter and depth, and that are possible lava tube skylights. These lunar-hole structures and possibly underlying lava tubes have great significance for lunar science and potential utilization, and thus should be priority targets of future lunar exploration. It is essential to acquire detailed information on terrain around the holes, multi-layered outcrops on the inner walls of the holes, debris and thermal conditions on the floor of the holes, and entrances of predicted lava tubes extending from the bottoms of the holes. The Smart Lander for Investigating the Moon (SLIM) mission, a future Japanese lunar lander mission being considered, is planned to land in an area within 100m around the Marius Hills Hole. Rovers will be dispatched from SLIM and approach the hole. SLIM and its rovers are small but the mission return could be huge.

著者

SUGIMURA Nobuo HASHIMOTO Tatsuaki KUWAHARA Toshinori SAKAMOTO Yuji YOSHIDA Kazuya SATO Yuki TAKANO Tomohiro

出版者

一般社団法人 日本航空宇宙学会

雑誌

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN

巻号頁・発行日

vol.14, no.30, pp.Pf_97-Pf_103, 2016

被引用文献数

1

---

<p>A new star sensor for a microsatellite was developed for accurate and reliable attitude detection. Microsatellite RISING-2, which was launched on May 24, 2014, has raised some issues with regard to the functionality of its star sensor. It is confirmed that white spots caused by space radiation and the stray light of sunshine induce a false detection of the satellite's attitude, which imposes significant limitations on satellite operations. To make improvements, the brightness value of the picture was studied. This paper proposes avoidance algorithms for white spots and stray light. The effects of these algorithms were validated to process the flight data from RISING-2 in a software simulation. The soundness of the star sensor is indicated via attitude detection tests against several star patterns using real flight images taken by RISING-2. Thereafter, avoidance algorithms were integrated in a newly developed processing board. In this board, the avoidance algorithm for white spots was composed using both a hardware logic filter and a software filter. The avoidance algorithm for stray light was expressed using only a software filter. During the programming of these algorithms, the functionality of the satellite's attitude detection was verified in a generic test environment. This system displays the entire sky view of stars on a monitor and enables attitude detection tests for all star images regardless of time or location. As a result, the satellite's attitude was detected normally by this board. Finally, the effectiveness of the software filter for the avoidance algorithm for white spots was confirmed by using sample photographs, including those with white spots.</p>

著者

Junichi HARUYAMA Isao KAWANO Takashi KUBOTA Masatsugu OTSUKI Hiroki KATO Toshihiko NISHIBORI Takahiro IWATA Yukio YAMAMOTO Yoshiaki ISHIHARA Aiko NAGAMATSU Kazuhito SHIMADA Toshiaki HASENAKA Tomokatsu MOROTA Masaki N. NISHINO Ko HASHIZUME Kazuto SAIKI Motomaro SHIRA Goro KOMATSU Nobuyuki HASEBE Hisayoshi SHIMIZU Hideaki MIYAMOTO Kensei KOBAYASHI Shinichi YOKOBORI Tatsuhiro MICHIKAMI Satoru YAMAMOTO Yasuhiro YOKOTA Hitoshi ARISUMI Genya ISHIGAMI Katsushi FURUTANI Yuichi MICHIKAWA

出版者

THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

雑誌

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN (ISSN:18840485)

巻号頁・発行日

vol.14, no.ists30, pp.Pk_147-Pk_150, 2016 (Released:2017-02-14)

被引用文献数

1 5

---

We are planning to explore the caverns through the skylight holes on the Moon and Mars. The holes and their associated subsurface caverns are among the most important future exploration targets. The importance of the lunar and Martian holes and their associated caverns is categorized from two aspects: (1) fresh materials are easily observed and sampled there, and (2) the subsurface caverns provide a safe, quiet environment. The expectation of lunar and Martian hole and cavern exploration is increasing in Japan. We name the project as UZUME (Unprecedented Zipangu (Japan) Underworld of the Moon Exploration) whose name is after a Japanese mythology. The ultimate purpose of the UZUME project is to investigate how to expand human activity and survival in space and on extraterrestrial bodies.

著者

TSUJITA Daisuke KASAI Toru UEMATSU Hirohiko HARADA Masayuki FUKATSU Tsutomu SASAKI Hiroshi

出版者

一般社団法人 日本航空宇宙学会

雑誌

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN

巻号頁・発行日

vol.12, no.29, pp.Tg_1-Tg_4, 2014

被引用文献数

4

---

The H-II Transfer Vehicle (HTV) is a Japanese unmanned cargo transfer vehicle developed for the International Space Station (ISS) re-supply and waste disposal purposes. HTV1 through HTV3 completed the mission successfully, and HTV4 through HTV7 are planned to be launched once a year continuously. Under the circumstance that the achievement is evaluated highly and the expectation for the new usage of HTV is increased, we have prepared a new platform and report some experiments plan with using it in the paper.

著者

Jun MATSUMOTO Chisato OKAMOTO Yusuke OKI Takuma NAKAMURA Jun AOKI

出版者

THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

雑誌

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN (ISSN:18840485)

巻号頁・発行日

vol.16, no.7, pp.698-705, 2018 (Released:2018-11-04)

参考文献数

18

被引用文献数

1

---

The Japan Aerospace Exploration Agency is now planning a Jupiter Trojan asteroid exploration mission using a 40 m-wide solar power sail spacecraft. In this mission, a 100 kg lander is soft-landed on an asteroid in order to perform in-situ analysis of asteroid samples by a mass spectrometer. In this mission, not only surface sampling, but also sub-surface sampling up to a depth of 1 m, will be performed. In the present paper, a sampling scenario including sub-surface sampling is proposed that does not require an anchoring system and that omits contamination from the analyzed sample. In this scenario, newly developed sampling instruments are implemented. In addition, ground experiments have been performed using these sampling instruments, surface sampling instruments, and sub-surface sampling instruments. The results of these experiments indicate that the sample mass required for in-situ analysis can be collected and that the proposed scenario is realistic and practical.

著者

FUJII Hironori A. KRUIJFF Michiel van der HEIDE Erik J. WATANABE Takeo

出版者

一般社団法人 日本航空宇宙学会

雑誌

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN

巻号頁・発行日

vol.8, no.27, pp.Tg_11-Tg_17, 2010

被引用文献数

2

---

The second Young Engineers' Satellite,YES2, is the longest manmade structure launched in 2007 and is space piggybacked on the Foton-M3 microgravity platform with the objective of a controlled deployment of a 32km tether. This paper introduces the object and the flight results of YES2 and the performance of the satellite is studied in comparison of the simulations and ground tests with respect to the flight results.

著者

Atsushi YASUDA Hiroki KAMEDA Toshihiro KAMEDA

出版者

(一社)日本航空宇宙学会

雑誌

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN (ISSN:18840485)

巻号頁・発行日

vol.14, no.ists30, pp.Pu_7-Pu_14, 2016 (Released:2016-11-26)

被引用文献数

1

---

Since the effective satellite-based education and outreach methods has not been clarified so far, we researched satellites in the world and their activities in order to extract essential issues from the viewpoints of successful education and outreach. As the results, we found the following three key points are all required for successful space education and outreach with satellites; "No limit type": the satellite everyone can use, "Participation type": the satellite users can participate in its mission, and "Interaction type": the satellite users can interact each other. Furthermore, as the example to fulfill these key points, we introduce CubeSats, ITF-1 and ITF-2 developed by University of Tsukuba YUI Project, with their missions and activities related with space education and outreach.

著者

Kentarou KITAMURA Sei-ichiro MIURA Junichi HARUYAMA

出版者

(一社)日本航空宇宙学会

雑誌

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN (ISSN:18840485)

巻号頁・発行日

vol.14, no.ists30, pp.Pu_1-Pu_6, 2016 (Released:2016-12-02)

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In context of the Engineering Design Education, actual lunar exploration mission “Unprecedented Zipangu Underworld of the Moon Exploration (UZUME) project” has strong potential to be applied to Project Based Learning (PBL) program in the Engineering Design Education. In this paper, we introduce student's experience for a conceptual design of lunar exploration mission and discuss its educational effectiveness. Through participation to the Satellite Design Contest, it is confirmed that students can acquire integrated ability of engineering subjects and that process of proposal is quite consistent with concept of the Engineering Design Education. In particular, merging of many engineering subjects and long-term group work are quite effective to cultivate student's engineering design abilities.

著者

SAKAMOTO Yuji TANABE Yuta YAGISAWA Hitoshi SUGIMURA Nobuo YOSHIDA Kazuya NISHIO Masanori NAKAJO Tomoyuki AKIYAMA Hiroaki

出版者

THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

雑誌

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN (ISSN:18840485)

巻号頁・発行日

vol.12, no.29, pp.Tf_7-Tf_12, 2014

被引用文献数

2

---

The 2-unit size cubesat RAIKO is a nanosatellite developed by Tohoku University and Wakayama University. This paper shows the mission and system specifications. The satellite was released to space on October 4, 2012 from International Space Station, which was the 419-km alt. circular orbit. The techniques for 50-kg microsatellites by Tohoku University are transferred to this satellite, so a lot of functions are included although the power and mass budgets are strongly restricted. The primary missions are the photo storage by different 3 optical sensors, the de-orbit mechanism experiment by expandable thin films, and Ku-band downlink communication experiment. The satellite operation was finished by orbital decay on August 6, 2013. The telemetry data were successful received in total 123 passes, in which total 63 photo images were obtained and maximum 100 kbps (200 ksps) downlink was successful. Using color CMOS camera, gradually separating ISS could be confirmed. From analysis of house-keeping data, the solar generation power in sunshine was 3.38 W (no paddles) to 5.77 W (with paddles) in average, the temperature of onboard computer was in the range of 20.8 to 28.7 deg C, and the battery temperature was 4.2 deg C in average. The real flight data from the 10-month operation will be precious information for future nanosatellite projects.

著者

ZAITSU Takashi OHTA Toshiko OHSHIMA Hiroshi MUKAI Chiaki

出版者

THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

雑誌

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN (ISSN:18840485)

巻号頁・発行日

vol.12, no.29, pp.Tp_7-Tp_9, 2014

被引用文献数

1

---

Occurrences of dental/oral diseases have been reported in the space environment and pre- or post-spaceflight and the deteriorations of oral defensive functions are evident in the space environment simulated experiments. NASA has identified 6 dental problems (Abscess, Avulsion/Tooth Loss, Caries, Crown Replacement, Exposed Pulp/Pulpitis and Filling Replacement) as the most important dental incidents to be dealt with in the long-term mission. To focus on the dental/oral health management for astronauts, dental examination and dental orthopantomogram are conducted as dental diagnosis. In addition, dental nerve block, dental prosthesis replacement and dental pain control are described in the treatment manual on the International Space Station (ISS). However, the systematic program to evaluate the risk of dental/oral problems in spacecraft and the manual to prevent the dental/oral problems in the space environment are still far from sufficient. To promote the dental/oral health of astronauts, the authors are going to launch "Space Oral Health Promotion (SOHP) project" which will tackle the research tasks and the operational countermeasures in space dentistry.