“ETS-VIII”的意思、由来-开放百科全书

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ETS-VIII

释义

Timetable
References

{{Refimprove|date=May 2010}}{{Infobox spaceflight
| name = Kiku 8
| image =
| image_caption =
| mission_type = Communications
Technology
| operator = JAXA
NICT
NTT
| website = {{url|http://www.jaxa.jp/projects/sat/ets8/index_e.html}}
| COSPAR_ID = 2006-059A
| SATCAT = 29656
| mission_duration = 10 years
| spacecraft_bus = DS-2000
| manufacturer = Mitsubishi Electric
| launch_mass = {{convert|5800|kg|lb}}
| power =
| launch_date = {{start-date|18 December 2006, 06:32|timezone=yes}} UTC^[1]
| launch_rocket = H-IIA 204
| launch_site = Tanegashima Yoshinobu 1
| launch_contractor = Mitsubishi
| entered_service = 9 May 2007
| disposal_type =
| deactivated = {{end-date|10 January 2017}}
| orbit_epoch = 29 October 2013, 19:34:27 UTC^[2]
| orbit_reference = Geocentric
| orbit_regime = Geostationary
| orbit_periapsis = {{convert|35769|km|mi}}
| orbit_apoapsis = {{convert|35816|km|mi}}
| orbit_inclination = 3.04 degrees
| orbit_period = 23.93 hours
| orbit_semimajor = {{convert|42163.77|km|mi}}
| orbit_eccentricity = 0.0005611
| orbit_RAAN = 68.56 degrees
| orbit_arg_periapsis = 138.47 degrees
| orbit_longitude = 145.7° east
| apsis = gee
| trans_band =
| trans_frequency =
| trans_bandwidth =
| trans_capacity =
| trans_coverage =
| trans_TWTA =
| trans_EIRP =
| trans_HPBW =
}}

JAXA Engineering Test Satellite ETS-VIII (Kiku 8) is the eighth technology test satellite in a series which started with ETS-1 in 1975 by NASDA. It was launched with the H-2A on December 18, 2006.

ETS-VIII was developed by JAXA in cooperation with NICT and NTT.

The aim of ETS-VIII is to enable satellite communications with small terminals. Unlike the Iridium satellites for mobile communication, ETS-VIII is positioned at GEO.

However to fulfill the task the satellite must carry two very large antennas. It was the first use of the 204 configuration (four strap-on boosters) of the H-IIA launch vehicle.

Timetable

December 20, 2000: Launch of LDREX, a demonstration of the large antenna reflector deployment, aboard Ariane 5. Deployment failed.
October 14, 2006 Launch of LDREX-2 with the Ariane 5, model antenna deployed successfully.
December 18, 2006: ETS-VIII was launched aboard H-IIA.
December 26, 2006 Both antennas were deployed.
January 9, 2007 GEO orbit injection.
May 9, 2007 The satellite switched to normal operation phase.
January 10, 2017: Decommissioned.^[3]

References

1. ^{{cite web|url=http://planet4589.org/space/log/launchlog.txt|title=Launch Log|first=Jonathan|last=McDowell|work=Jonathan's Space Page|accessdate=30 October 2013}}
2. ^{{cite web|url=http://www.heavens-above.com/orbit.aspx?satid=29656|title=ETS 8 - Orbit|first=Chris|last=Peat|work=Heavens Above|date=29 October 2013|accessdate=30 October 2013}}
3. ^{{cite web |url=http://www.satnavi.jaxa.jp/project/ets8/news/2017/170111.html |script-title=「きく8号」の運用終了について |language=Japanese |publisher=JAXA |date=January 11, 2017 |accessdate=January 12, 2017}}

5 : Satellites of Japan|Satellites using the DS2000 bus|Spacecraft launched in 2006|Spacecraft launched by H-II rockets|Derelict satellites orbiting Earth

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