Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Kei-Ichi Okuyama"'
Publikováno v:
Aerospace, Vol 11, Iss 6, p 436 (2024)
Micro satellites must survive severe mechanical conditions during their launch phase. Usually, the structural design of a micro satellite is performed using the internal stress analysis and the natural frequency analysis, which are based on a finite
Externí odkaz:
https://doaj.org/article/3916e3c304fd4514aa298619e9c4945b
Publikováno v:
Aerospace, Vol 11, Iss 3, p 201 (2024)
In this study, we focus on 3D-printed PEEK/CFRTP (Carbon-Fiber-Reinforced Thermoplastic) and PEEK (Polyether Ether Ketone) materials as new space materials. In space, there are intense ultraviolet (UV) rays that are weakened by the atmosphere on Eart
Externí odkaz:
https://doaj.org/article/684fc6bb0db74e14863149da7683e483
Publikováno v:
Havacılık ve Uzay Teknolojileri Dergisi, Vol 13, Iss 1, Pp 1-16 (2020)
In small satellite communications systems, Software Defined Radios (SDR) have been used for increase the system flexibilization both in the space segment and on the ground station implementations. In this paper, an SDR implementation for the space se
Externí odkaz:
https://doaj.org/article/4357f8f5b3954ca99ccb294bf4c2eebd
Publikováno v:
Journal of Aerospace Technology and Management, Vol 11 (2019)
Nowadays, it has become possible for universities and new businesses to launch satellites of reduced size and cost fulfilling viable missions. Nevertheless, there is still a considerable failure rate that reduces the expected lifetime of these spacec
Externí odkaz:
https://doaj.org/article/9760229ab3be4da6b8471660f3c4bbff
Publikováno v:
Aerospace, Vol 7, Iss 7, p 95 (2020)
The extreme heating environment during re-entry requires an efficient heat shield to protect a spacecraft. The current method of manufacturing a heat shield is labor intensive. The application of 3D printing can reduce cost and manufacturing time and
Externí odkaz:
https://doaj.org/article/414b94b16ad542a8b2d35252d2435972
Publikováno v:
Aerospace, Vol 7, Iss 4, p 35 (2020)
The low Earth orbit (LEO) environment exposes spacecraft to factors that can degrade the dimensional stability of the structure. Carbon Fibre/Polyether Ether Ketone (CF/PEEK) can limit such degradations. However, there are limited in-orbit data on th
Externí odkaz:
https://doaj.org/article/d6387f1d9eec47898121a3088217ca10
Autor:
Isai Fajardo, Aleksander A. Lidtke, Sidi Ahmed Bendoukha, Jesus Gonzalez-Llorente, Rafael Rodríguez, Rigoberto Morales, Dmytro Faizullin, Misuzu Matsuoka, Naoya Urakami, Ryo Kawauchi, Masayuki Miyazaki, Naofumi Yamagata, Ken Hatanaka, Farhan Abdullah, Juan J. Rojas, Mohamed Elhady Keshk, Kiruki Cosmas, Tuguldur Ulambayar, Premkumar Saganti, Doug Holland, Tsvetan Dachev, Sean Tuttle, Roger Dudziak, Kei-ichi Okuyama
Publikováno v:
Aerospace, Vol 6, Iss 10, p 108 (2019)
Ten-Koh is a 23.5 kg, low-cost satellite developed to conduct space environment effects research in low-Earth orbit (LEO). Ten-Koh was developed primarily by students of the Kyushu Institute of Technology (Kyutech) and launched on 29 October 2018 on-
Externí odkaz:
https://doaj.org/article/77470aa6d66f46fdab082c062bdb275e
Publikováno v:
Aerospace, Vol 6, Iss 5, p 61 (2019)
As small satellites are becoming more widespread for new businesses and applications, the development time, failure rate and cost of the spacecraft must be reduced. One of the systems with the highest cost and the most frequent failure in the satelli
Externí odkaz:
https://doaj.org/article/87b71587696a40fa88ec8b1e1703909b
Autor:
Doug Holland, Yury Matviichuk, Borislav Tomov, Kei-ichi Okuyama, Plamen Dimitrov, Premkumar Saganti, Tsvetan Dachev, Isai Fajardo Tapia
Publikováno v:
Aerospace Research in Bulgaria. 33:5-24
On 29 October 2018 at 13:08 Japanese Standard Time was successfully launched the Greenhouse gas Observing SATellite (GOSAT-2) from the JAXA Tanegashima Space Center. Piggy-back with the GOSAT-2 satellite in a circular (623 km), polar synchronous orbi
Autor:
Sean Tuttle, Doug Holland, Misuzu Matsuoka, Tsvetan Dachev, Rafael Rodríguez, Masayuki Miyazaki, Naoya Urakami, Roger Dudziak, Tuguldur Ulambayar, Ken Hatanaka, Aleksander A. Lidtke, Jesus Gonzalez-Llorente, Kei Ichi Okuyama, Naofumi Yamagata, Mohamed Elhady Keshk, Juan José Rojas, Rigoberto Morales, Premkumar B. Saganti, Kiruki Cosmas, Ryo Kawauchi, Dmytro Faizullin, Farhan Abdullah, Sidi Ahmed Bendoukha, Isai Fajardo
Publikováno v:
Aerospace, Vol 6, Iss 10, p 108 (2019)
Aerospace
Volume 6
Issue 10
Aerospace
Volume 6
Issue 10
Ten-Koh is a 23.5 kg, low-cost satellite developed to conduct space environment effects research in low-Earth orbit (LEO). Ten-Koh was developed primarily by students of the Kyushu Institute of Technology (Kyutech) and launched on 29 October 2018 on-