The ETS-VII, or Engineering Test Satellite No. 7, was a satellite developed and launched by the National Space Development Agency of Japan (NASDA). It is also known as KIKU-7.[1] It was launched aboard an H-II rocket from Tanegashima Space Center, on 28 November 1997.[1] The ETS-VII was equipped with a 2-meter-long (6.6 ft) robotic arm, which was used to carry out several experiments related to rendezvous docking and space robotics.[1] It was the world's first satellite to be equipped with a robotic arm,[2] and also Japan's first uncrewed spacecraft to conduct autonomous rendezvous and docking operations successfully, decades after the docking of the Soviet Kosmos 186 and Kosmos 188 spacecraft in 1967.[3] Although it was originally intended to be used for 1.5 years, the satellite was functional for a period of almost five years.[4] ETS-VII eventually decayed from orbit on 13 November 2015.[5]
The ETS-VII consists of two main parts; the chaser satellite and the target satellite.[6] The chaser satellite is the main satellite body, and was named Hikoboshi. A 2 m long robotic arm was attached to this part. The smaller target satellite was named Orihime. The box shaped, complete satellite system weighed 2,860 kg.[1] The ETS-VII was equipped with three solar panels, with two on the chaser satellite and one on the target satellite. The satellite was assisted by relative global positioning system (RGPS) navigation.[7]
Functioning
The satellite was launched using an H-II rocket on 28 November 1997.[8] The launching took place at the Tanegashima Space Center in Japan. The orbit of the ETS-VII was at an altitude of 550 km, with an inclination of 35 degrees.[1]
The ETS-VII was built with an intended mission life of 1.5 years, with the mission to be ended in May 1999. However, in March 1999, it was decided to carry out operations for an additional six months because the satellite was in good condition. The last experiment carried out with the ETS-VII was ended on 16 December 1999. All the planned experiments had been carried out by this time, but the satellite was monitored to evaluate its durability. On 30 October 2002, the operating of the ETS-VII was terminated.[4]
NASDA had invited research institutes in Japan and other countries to conduct joint experiments with the ETS-VII. As a result, joint experiments were conducted with organizations such as the European Space Agency (ESA).
Experiments
Three rendezvous docking operations were carried out with the ETS-VII, which involved placing the target satellite 200 mm away from the chaser and using the robot arm to retrieve and hold it in place. Several other experiments were also carried out with the satellite's robotic components.[9] Most of the robot experiments were successfully completed by March 1999, and target satellite handling experiments were carried out in May 1999.[4]
An error occurred during the second rendezvous docking operation which was carried out in August 1998. The troubleshooting to identify this error was done in early March 1999. All previously planned robot experiments were completed by the end of March. Additional experiments were planned and carried out later.[4]
The final rendezvous docking operation was successfully completed on 27 October 1999. The satellite's final robot experiment was carried out on 29 November. Satellite checkout was conducted as the last experimental operation on 15 and 16 December, concluding all operations carried out by the ETS-VII project team.[4]
^ abcde. Japanese Aerospace Exploration Agency. Archived from the original on 9 January 2010. Retrieved 14 November 2008.
^Mitsushige Oda (2000). "Summary of NASDA's ETS-VII robot satellite mission". Journal of Robotics and Mechatronics. Fuji Technology Press. 12 (4): 417–424. doi:10.20965/jrm.2000.p0417.
^Kawano, Isao; Mokuno, Masaaki; Suzuki, Takashi; Koyama, Hiroshi; Kunugi, Makoto (2002). "Approach Trajectory Design for Autonomous Rendezvous of ETS-VII". Journal of the Japan Society for Aeronautical and Space Sciences. 49 (575): 432–437. Bibcode:2002JSASS..49..432K. doi:10.2322/jjsass.49.432.
^ abcde. Japanese Aerospace Exploration Agency. Archived from the original on 27 July 2007. Retrieved 14 November 2008.
^Frank Sietzen, Jr. (1 September 1999). . Space.com. Archived from the original on 23 May 2009. Retrieved 14 November 2008.
^"First autonomous rendezvous using relative GPS navigation by ETS-VII". National Space Development Agency of Japan. CAT.INIST. Retrieved 14 November 2008.
^"Docking Mechanisms of ETS-VII". Science Links Japan. Archived from the original on 21 February 2013. Retrieved 14 November 2008.
^Imaida, T.; Yokokohji, Y.; Doi, T.; Oda, M.; Yoshikawa, T. (2004). "Ground-space bilateral teleoperation of ETS-VII robot arm by direct bilateral coupling under 7-s time delay condition". IEEE Transactions on Robotics and Automation. IEEE. 20 (3): 499–511. doi:10.1109/TRA.2004.825271. hdl:2433/50065.
External links
January 31, 2023
engineering, test, satellite, satellite, developed, launched, national, space, development, agency, japan, nasda, also, known, kiku, launched, aboard, rocket, from, tanegashima, space, center, november, 1997, equipped, with, meter, long, robotic, which, used, . The ETS VII or Engineering Test Satellite No 7 was a satellite developed and launched by the National Space Development Agency of Japan NASDA It is also known as KIKU 7 1 It was launched aboard an H II rocket from Tanegashima Space Center on 28 November 1997 1 The ETS VII was equipped with a 2 meter long 6 6 ft robotic arm which was used to carry out several experiments related to rendezvous docking and space robotics 1 It was the world s first satellite to be equipped with a robotic arm 2 and also Japan s first uncrewed spacecraft to conduct autonomous rendezvous and docking operations successfully decades after the docking of the Soviet Kosmos 186 and Kosmos 188 spacecraft in 1967 3 Although it was originally intended to be used for 1 5 years the satellite was functional for a period of almost five years 4 ETS VII eventually decayed from orbit on 13 November 2015 5 ETS 7 Contents 1 Features 2 Functioning 3 Experiments 4 See also 5 References 6 External linksFeatures EditThe ETS VII consists of two main parts the chaser satellite and the target satellite 6 The chaser satellite is the main satellite body and was named Hikoboshi A 2 m long robotic arm was attached to this part The smaller target satellite was named Orihime The box shaped complete satellite system weighed 2 860 kg 1 The ETS VII was equipped with three solar panels with two on the chaser satellite and one on the target satellite The satellite was assisted by relative global positioning system RGPS navigation 7 Functioning EditThe satellite was launched using an H II rocket on 28 November 1997 8 The launching took place at the Tanegashima Space Center in Japan The orbit of the ETS VII was at an altitude of 550 km with an inclination of 35 degrees 1 The ETS VII was built with an intended mission life of 1 5 years with the mission to be ended in May 1999 However in March 1999 it was decided to carry out operations for an additional six months because the satellite was in good condition The last experiment carried out with the ETS VII was ended on 16 December 1999 All the planned experiments had been carried out by this time but the satellite was monitored to evaluate its durability On 30 October 2002 the operating of the ETS VII was terminated 4 NASDA had invited research institutes in Japan and other countries to conduct joint experiments with the ETS VII As a result joint experiments were conducted with organizations such as the European Space Agency ESA Experiments EditThree rendezvous docking operations were carried out with the ETS VII which involved placing the target satellite 200 mm away from the chaser and using the robot arm to retrieve and hold it in place Several other experiments were also carried out with the satellite s robotic components 9 Most of the robot experiments were successfully completed by March 1999 and target satellite handling experiments were carried out in May 1999 4 An error occurred during the second rendezvous docking operation which was carried out in August 1998 The troubleshooting to identify this error was done in early March 1999 All previously planned robot experiments were completed by the end of March Additional experiments were planned and carried out later 4 The final rendezvous docking operation was successfully completed on 27 October 1999 The satellite s final robot experiment was carried out on 29 November Satellite checkout was conducted as the last experimental operation on 15 and 16 December concluding all operations carried out by the ETS VII project team 4 See also EditKosmos 186 and Kosmos 188 Orbital Express SPADEX Space Docking Experiment Robotic Refueling MissionReferences Edit a b c d e Engineering Test Satellite VII KIKU 7 ETS VII Japanese Aerospace Exploration Agency Archived from the original on 9 January 2010 Retrieved 14 November 2008 Mitsushige Oda 2000 Summary of NASDA s ETS VII robot satellite mission Journal of Robotics and Mechatronics Fuji Technology Press 12 4 417 424 doi 10 20965 jrm 2000 p0417 Kawano Isao Mokuno Masaaki Suzuki Takashi Koyama Hiroshi Kunugi Makoto 2002 Approach Trajectory Design for Autonomous Rendezvous of ETS VII Journal of the Japan Society for Aeronautical and Space Sciences 49 575 432 437 Bibcode 2002JSASS 49 432K doi 10 2322 jjsass 49 432 a b c d e Engineering Test Satellite VII ETS VII Orihime amp Hikoboshi Japanese Aerospace Exploration Agency Archived from the original on 27 July 2007 Retrieved 14 November 2008 ETS 7 N2YO com Retrieved 21 February 2019 Frank Sietzen Jr 1 September 1999 Japanese Robot Performs Space Docking a First Space com Archived from the original on 23 May 2009 Retrieved 14 November 2008 First autonomous rendezvous using relative GPS navigation by ETS VII National Space Development Agency of Japan CAT INIST Retrieved 14 November 2008 Docking Mechanisms of ETS VII Science Links Japan Archived from the original on 21 February 2013 Retrieved 14 November 2008 Imaida T Yokokohji Y Doi T Oda M Yoshikawa T 2004 Ground space bilateral teleoperation of ETS VII robot arm by direct bilateral coupling under 7 s time delay condition IEEE Transactions on Robotics and Automation IEEE 20 3 499 511 doi 10 1109 TRA 2004 825271 hdl 2433 50065 External links EditGIF animation of the docking Retrieved from https en wikipedia org w index php title ETS VII amp oldid 1078072852, wikipedia, wiki, book, books, library,
