| 词条 | TechEdSat |
| 释义 |
The Technology Education Satellite (TechEdSat) program is a series of CubeSats built by San Jose State University and University of Idaho students in partnership with NASA's Ames Research Center. These satellites have tested communication technology for smallsats, and have contributed to the development of the Small Payload Quick Return (SPQR) concept. TechEdSat{{Infobox spaceflight|auto=all|name=TechEdSat-1|image=TechEdSat.jpg|image_caption=CAD drawing of TechEdSat-1|image_alt=CAD drawing of TechEdSat-1|mission_type=Technology demonstration|operator=San Jose State University{{·}}University of Idaho{{·}}JAXA{{·}}ÅAC Microtec{{·}}NASA|COSPAR_ID=1998-067CQ|SATCAT=38854|mission_duration=|launch_mass=|power=|launch_date={{start-date|21 July 2012, 02:06:00}}|launch_rocket=H-II|launch_site=|deployment_date=5 May 2013|orbit_reference=Geocentric|orbit_regime=Low Earth|orbit_semimajor=|orbit_eccentricity=|orbit_periapsis=402 kilometers (250 miles)|orbit_apoapsis=422 kilometers (262 miles)|orbit_inclination=51.65|orbit_period=92.80 minutes|orbit_RAAN=|orbit_arg_periapsis=|orbit_mean_anomaly=|orbit_mean_motion=|orbit_velocity=|orbit_epoch=9 October 2012|orbit_rev_number=|apsis=gee}}The first TechEdSat (later renamed "TechEdSat-1" or "TES-1")[1][2][3] was a 1-U Cubesat designed to evaluate Space Plug-and-play Avionics (SPA) designed in Sweden by ÅAC Microtec. It was also originally intended to perform a communications experiment utilizing the Iridium and Orbcomm satellite phone network,[4] although this function was disabled before launch.[5] TechEdSat was deployed into orbit from the International Space Station on 4 Oct 2012. It reentered to atmosphere on 5 May 2013.[6]NSSDCA ID: 2012-038D[7]Hardware[8]
Specifications
LaunchTechEdSat was launched from Pad 2 of the Tanegashima Yoshinobu Launch Complex on 21 July 2012, at 02:06 UTC,[9] aboard Kounotori 3 atop an H-IIB launch vehicle. Kounotori 3 carried the satellite, along with the Raiko, We-Wish, Niwaka, and F-1 spacecraft, to the International Space Station, from where it was deployed via the JAXA J-SSOD deployer, from the Kibo module on 4 Oct 2012 at 15:44:15.297 UTC.[10] Beacon Packet FormatTechEdSat-1 transmitted a heartbeat packet over amateur radio every 4 seconds. These packets are 122 ASCII character AX.25 packets. Amateur band radio frequency is 437.465 MHz.[11] Two consecutive 12 bit raw ADC Data values are parsed into one 3 byte chunk in order to save data space. TechEdSat-2TechEdSat-2 was planned as a 6U CubeSat, a collaboration between ÅAC Microtec in Sweden and NASA Ames.[12] An Iridium transceiver flew aboard the PhoneSat v1b CubeSat as the TechEdSat-2 mission, separate from the spacecraft originally planned as TechEdSat-2.[13] PhoneSat v1b (TES-2) SATCAT no.: 39142 PhoneSat v1b (TES-2) COSPAR ID: 2013-016A PhoneSat v1b (TES-2) NSSDCA ID: 2013-016A[7]PhoneSat v1b (TES-2) Orbital Parameters:[14]
TechEdSat-3p{{Infobox spaceflight|auto=all|name=TechEdSat-3p|image=|image_caption=|image_alt=|mission_type=Technology demonstration|operator=San Jose State University{{·}}University of Idaho{{·}}NASA|COSPAR_ID=1998-067DD|SATCAT=39415|mission_duration=|launch_mass=|power=|launch_date={{start-date|3 August 2013, 19:48:46 UTC}}|launch_rocket=H-IIB|launch_site=Tanegashima Space Center|deployment_date=|orbit_reference=Geocentric|orbit_regime=Low Earth|orbit_semimajor=|orbit_eccentricity=|orbit_periapsis=410 kilometers (255 miles)|orbit_apoapsis=415 kilometers (258 miles)|orbit_inclination=51.65|orbit_period=92.81 minutes|orbit_RAAN=|orbit_arg_periapsis=|orbit_mean_anomaly=|orbit_mean_motion=|orbit_velocity=|orbit_epoch=20 November 2013|orbit_rev_number=|apsis=gee}}TechEdSat-3p was the third spacecraft flown in the TechEdSat series. Its dimensions were approximately 30*10*10 cm, or three CubeSat units long, making it three times larger than TechEdSat-1. TechEdSat-3p was launched to the International Space Station on 20 November 2013 from Tanegashima, Japan on the HTV-4 International Space Station cargo resupply mission and subsequently deployed into orbit by the JEM-Small Satellite Orbital Deployer.TechEdSat-3p was the first satellite of the TechEdSat series to include an exo-brake, a parachute-like drag device to demonstrate passive deorbit capability.[15] The deployment of an exo-brake increases the surface area of a satellite, increasing its coefficient of drag in the thin upper atmosphere and causing the satellite to deorbit faster than it otherwise would. This technology could be used to more quickly dispose of satellites in Low Earth Orbit that have completed their missions, decreasing the amount of potentially hazardous debris in space. The exo-brake is currently being developed for use as part of the Small Payload Quick Return concept, which would enable science materials to be returned to Earth from the International Space Station whenever is most convenient for scientists rather than just a few times per year aboard a returning cargo resupply vehicle. According to smallsat logistics company ÅAC Microtech, a main power distribution board designed for TechEdSat-1 was reused on the TechEdSat-3p mission.[16] NSSDCA ID: TECHEDS3P[7]TechEdSat-4{{Infobox spaceflight|auto=all|name=TechEdSat-4|image=|image_caption=|image_alt=|mission_type=Technology demonstration|operator=San Jose State University{{·}}University of Idaho{{·}}NASA|COSPAR_ID=1998-067FY|SATCAT=40455|mission_duration=|launch_mass=|power=|launch_date={{start-date|13 July 2014}}|launch_rocket=Antares-120|launch_site=Mid-Atlantic Regional Spaceport|deployment_date=4 March 2015|orbit_reference=Geocentric|orbit_regime=Low Earth|orbit_semimajor=|orbit_eccentricity=|orbit_periapsis=393 kilometers (244 miles)|orbit_apoapsis=402 kilometers (250 miles)|orbit_inclination=51.64|orbit_period=92.50 minutes|orbit_RAAN=|orbit_arg_periapsis=|orbit_mean_anomaly=|orbit_mean_motion=|orbit_velocity=|orbit_epoch=5 March 2015|orbit_rev_number=|apsis=gee}}TechEdSat-4 was a 3U CubeSat mission developed, integrated, and tested at NASA Ames in partnership with student interns from San Jose State University in California and the University of Idaho in Moscow, Idaho. The objective of the TechEdSat-4 mission was to demonstrate new technologies including satellite-to-satellite communications and an upgraded Exo-Brake device to demonstrate a passive deorbiting. TechEdSat-4 was launched as a secondary cargo payload on the Cygnus CRS Orb-2 ISS resupply mission. The launch vehicle was the Orbital Sciences Corporation Antares-120, launching from the Mid-Atlantic Regional Spaceport on Wallops Island, VA on 13 July 2014.[17] TechEdSat-4 was deployed from the International Space Station via the NanoRacks CubeSat Deployer on 4 March 2015.[18][19]TechEdSat-5{{Infobox spaceflight|auto=all|name=TechEdSat-5|image=|image_caption=|image_alt=|mission_type=Technology demonstration|operator=San Jose State University{{·}}University of Idaho{{·}}NASA|COSPAR_ID=1998-067LB|SATCAT=42066|mission_duration=|launch_mass=|power=|launch_date={{start-date|9 December 2016}}|launch_rocket=H-II|launch_site=Tanegashima Space Center|deployment_date=6 March 2017, 18:20 UTC|orbit_reference=Geocentric|orbit_regime=Low Earth|orbit_semimajor=|orbit_eccentricity=|orbit_periapsis=397 kilometers (247 miles)|orbit_apoapsis=408 kilometers (254 miles)|orbit_inclination=51.64|orbit_period=92.61 minutes|orbit_RAAN=|orbit_arg_periapsis=|orbit_mean_anomaly=|orbit_mean_motion=|orbit_velocity=|orbit_epoch=8 March 2017|orbit_rev_number=|apsis=gee}}TechEdSat-5 was a 4 kg, 3.5U CubeSat that was launched on 9 December 2016 aboard the HTV-6 cargo resupply spacecraft, and was deployed from the International Space Station at 18:20 UTC on 6 March 2017.[20] It was the first satellite in the TechEdSat program to include a modulated Exo-Brake that was could adjust the amount of atmospheric drag on the spacecraft, enabling a targeted re-entry.[21] The TechEdSat-5 Exo-Brake was cross-shaped, made of mylar, and used a combination of mechanical struts and flexible cords.[24] Its surface area was approximately 0.35 square metres.[20] A ‘Cricket’ Wireless Sensor Module (WSM) was included with TechEdSat-5.[22] The satellite reentered the atmosphere on July 29, 2017 after successfully operating for 144 days.[23][https://www.nasa.gov/mission_pages/station/research/experiments/2543.html TechEdSat-6]{{Infobox spaceflight|auto=all|name=TechEdSat-6|image=|image_caption=|image_alt=|mission_type=Technology demonstration|operator=San Jose State University{{·}}University of Idaho{{·}}NASA|COSPAR_ID=1998-067NK|SATCAT=43026|mission_duration=|launch_mass=|power=|launch_date={{start-date|12 November 2017, 12:19:51}}|launch_rocket=Antares 230|launch_site=Mid-Atlantic Regional Spaceport|deployment_date=20 November 2017|orbit_reference=Geocentric|orbit_regime=Low Earth|orbit_semimajor=|orbit_eccentricity=|orbit_periapsis=397 kilometers (247 miles)|orbit_apoapsis=406 kilometers (252 miles)|orbit_inclination=51.65|orbit_period=92.59 minutes|orbit_RAAN=|orbit_arg_periapsis=|orbit_mean_anomaly=|orbit_mean_motion=|orbit_velocity=|orbit_epoch=21 November 2017|orbit_rev_number=|apsis=gee}}TechEdSat-6 was a CubeSat that was launched at 12:19 UTC on 12 November 2017 aboard the Cygnus CRS-8 cargo resupply mission to the International Space Station.[24][25] It was deployed from the NanoRacks Nanolauncher on 20 November 2017.[26] In addition to the primary payload, it contained a CubeSat Identity Tag (CUBIT), a Radio Frequency Identification (RFID) tag developed by DARPA and SRI International to assist in future identification of satellites. It successfully reentered the atmosphere on 14 May 2018.[27]TechEdSat-7TechEdSat-7 is a 2U CubeSat that is intended to test a High Packing Density Exo-Brake. It is planned to launch on Virgin Orbit's LauncherOne as part of NASA's ELaNa program. It will fly with a CubeSat Identity Tag (CUBIT), a Radio Frequency Identification (RFID) tag developed by DARPA and SRI International to assist in future identification of satellites.[28] Operators: SJSU, University of Idaho, NASA Ames Research Center TechEdSat-8{{Infobox spaceflight|auto=all|name=TechEdSat-8|image=|image_caption=|image_alt=|mission_type=Technology demonstration|operator=San Jose State University{{·}}NASA|COSPAR_ID=1998-067PY|SATCAT=44032|mission_duration=Elapsed: {{time interval|31 January 2019 16:45:00|show=ymd|sep=,}}|launch_mass=|power=|launch_date={{start-date|5 December 2019, 18:16:00}}|launch_rocket=Falcon 9|launch_site=|deployment_date=31 January 2019|orbit_reference=Geocentric|orbit_regime=Low Earth|orbit_semimajor=|orbit_eccentricity=0.0005|orbit_periapsis=402 kilometers (250 miles)|orbit_apoapsis=409 kilometers (254 miles)|orbit_inclination=51.64|orbit_period=92.67 minutes|orbit_RAAN=|orbit_arg_periapsis=|orbit_mean_anomaly=|orbit_mean_motion=|orbit_velocity=|orbit_epoch=31 January 2018|orbit_rev_number=|apsis=gee}}TechEdSat-8 is a 6 unit CubeSat that includes an exo-brake designed for continued operation in high temperature environments. This technology, known as a "Hot Exo-Brake" could enable more precisely-targeted atmospheric reentries. An ablation device will also be flying on the spacecraft. TechEdSat-8 was originally planned to launch with the Cygnus NG-10 cargo resupply mission to the International Space Station as part of the ELaNa program, but instead launched aboard the SpaceX CRS-16 ISS cargo resupply mission at 18:16 UTC on 5 December,[29] arriving at the ISS on 8 December 2018.[30][31] TechEdSat-8 was deployed into orbit by the JEM-Small Satellite Orbital Deployer at 16:45 UTC on 31 January 2019.[32] The satellite has been in communication with controllers and is reportedly performing well in advance of a targeted reentry.[33]TechEdSat-9, 10, and 11TechEdSat-10 is a 3U CubeSat that was selected in 2018 to launch as part of the ELaNa program.[34] TechEdSat-9 and TechEdSat-11 are reportedly also planned to fly at some point in the future.[35] Operators: SJSU, University of Idaho, NASA Ames Research Center References1. ^http://space.skyrocket.de/doc_sdat/techedsat.htm 2. ^https://www.nasa.gov/sites/default/files/atoms/files/techedsat5-factsheet-508-april2017.pdf 3. ^https://web.archive.org/web/20161229151730/https://solarsystem.nasa.gov/docs/1_04_An%20Overview%20of%20the%20SOAREX%20and%20TechEdSat%20Flight%20Series_M.S.%20Murbach.pdf 4. ^{{cite web|url=http://space.skyrocket.de/doc_sdat/techedsat.htm|title=TechEdSat|author=Gunter Dirk Krebs|date=January 31, 2012|publisher=Gunter's Space Page|accessdate=February 1, 2012}} 5. ^AmSat, "TechEdSat to Use Satphone": The plan to transmit from space using frequencies allocated to Iridium and Orbcomm SatPhone ground stations has been canceled. A statement from the team says: “We were forced to disable the Iridium modem as our FCC license did not come in time. As usual, building the satellite is the easy part.”(accessed 12 Sept 2014) 6. ^[https://twitter.com/TechEdSat/status/331441656656175104 TechEdSat Twitter] 7. ^1 2 {{Cite web|url=https://nssdc.gsfc.nasa.gov/nmc/|title=NASA - NSSDCA - Master Catalog|website=nssdc.gsfc.nasa.gov|access-date=2018-09-09}} 8. ^[https://directory.eoportal.org/web/eoportal/satellite-missions/t/techedsat TechEdSat specifications] (accessed 12 Sept 2014) 9. ^{{Cite web|url=https://www.nasaspaceflight.com/2012/07/japanese-h-iib-launch-htv-3-international-space-station/|title=Japanese H-IIB launches HTV-3 to the International Space Station – NASASpaceFlight.com|website=www.nasaspaceflight.com|language=en-US|access-date=2018-09-08}} 10. ^{{cite web|url=http://turing.cs.fit.ac.jp/~fitsat/Orbital_Element.txt|title=CubeSat Orbital Elements|archive-url=https://archive.is/20121219061521/http://turing.cs.fit.ac.jp/~fitsat/Orbital_Element.txt|archive-date=December 19, 2012|dead-url=yes|accessdate=October 4, 2012}} 11. ^{{cite web |url=http://www.amsatuk.me.uk/iaru/finished_detail.php?serialnum=228 |title=TechEdSat| publisher=IARU | date= April 3, 2012 | accessdate= April 6, 2012}} 12. ^Gunter's Space Page, TechEdSat 2 (TES 2) (accessed 12 Sept 2014) 13. ^{{Cite web|url=https://space.skyrocket.de/doc_sdat/phonesat-v1.htm|title=PhoneSat 1.0|website=space.skyrocket.de|access-date=2018-09-08}} 14. ^{{Cite web|url=http://planet4589.org/space/log/satcat.txt|title=Satellite Catalog|last=McDowell|first=Jonathan|date=|website=Jonathan's Space Page|archive-url=|archive-date=|dead-url=|access-date=8 September 2018}} 15. ^TechEdSat 3 (accessed 12 Sept 2014) 16. ^{{Cite web|url=http://aacmicrotec.com/experience/case/|title=Case|website=ÅAC Microtec|language=en-US|access-date=2019-01-31}} 17. ^[https://directory.eoportal.org/web/eoportal/satellite-missions/t/techedsat-4 TechEdSat-4 (Technological and Educational Nanosatellite-4)] (accessed 12 Sept 2014) 18. ^The Development of On-Demand Sample Return Capability (SPQR) (TechEdSat-4) - 05.24.17 19. ^[https://directory.eoportal.org/web/eoportal/satellite-missions/content/-/article/techedsat-4 TechEdSat-4 (Technological and Educational Nanosatellite-4)] 20. ^1 {{Cite web|url=http://spaceflight101.com/re-entry/re-entry-techedsat-5/|title=Re-Entry: TechEdSat-5 – Spaceflight101|website=spaceflight101.com|language=en-US|access-date=2018-09-09}} 21. ^{{Cite web|url=https://space.skyrocket.de/doc_sdat/techedsat-5.htm|title=TechEdSat 5 (TES 5)|website=space.skyrocket.de|access-date=2018-09-08}} 22. ^{{Cite news|url=https://www.nasa.gov/ames/image-feature/nasa-parachute-device-may-return-small-spacecraft-from-deep-space-missions|title=NASA Tests Braking Device for Returning Small Spacecraft from Space|last=Minafra|first=Kimberly|date=2017-03-06|work=NASA|access-date=2018-09-09|language=en}} 23. ^1 {{Cite web|url=https://directory.eoportal.org/web/eoportal/satellite-missions/t/techedsat-5|title=TechEdSat5 - eoPortal Directory - Satellite Missions|website=directory.eoportal.org|language=en-US|access-date=2018-09-08}} 24. ^{{Cite web|url=https://spaceflight101.com/antares-launches-cygnus-oa8-cargo-spacecraft/|title=Cygnus “S.S. Gene Cernan” En-Route to Space Station after Sunday Morning Commute to Orbit – Spaceflight101|website=spaceflight101.com|language=en-US|access-date=2018-09-09}} 25. ^{{Cite news|url=https://www.nasa.gov/content/about-techedsat|title=About TechEdSat|last=Phillips|first=Veronica|date=2017-11-10|work=NASA|access-date=2018-09-08|language=en}} 26. ^{{Cite news|url=https://www.nasa.gov/ames/image-feature/nasa-to-test-advanced-space-wireless-sensor-network-and-device-for-returning-small-spacecraft-to-Earth|title=NASA to Test Wireless Network and Device for Returning Smallsats|last=Minafra|first=Kimberly|date=2017-11-09|work=NASA|access-date=2018-09-08|language=en}} 27. ^{{Cite news|url=https://www.nasa.gov/feature/nasa-ames-astrogram-june-2018|title=Ames Astrogram - June 2018|last=Albaugh|first=Astrid|date=2018-06-01|work=NASA|access-date=2018-10-31|language=en}} 28. ^{{Cite web|url=https://space.skyrocket.de/doc_sdat/techedsat-7.htm|title=TechEdSat 7 (TES 7)|website=space.skyrocket.de|access-date=2018-09-08}} 29. ^{{Cite web|url=https://blogs.nasa.gov/spacestation/2018/12/04/dragon-launch-slips-one-day-as-new-crew-moves-in/|title=Dragon Launch Slips One Day as New Crew Moves In – Space Station|website=blogs.nasa.gov|language=en-US|access-date=2018-12-26}} 30. ^{{Cite web|url=https://blogs.nasa.gov/spacestation/2018/12/08/dragon-attached-to-station-returns-to-earth-in-january/|title=Dragon Attached to Station, Returns to Earth in January – Space Station|website=blogs.nasa.gov|language=en-US|access-date=2018-12-26}} 31. ^{{Cite web|url=https://spaceflightnow.com/2018/11/19/space-station-receives-second-of-back-to-back-cargo-deliveries/|title=Space station receives second of back-to-back cargo deliveries – Spaceflight Now|website=spaceflightnow.com|language=en-US|access-date=2018-11-26}} 32. ^{{Cite web|url=https://twitter.com/NanoRacks/status/1091016771316912128|title=And, that's a wrap! After an early wake up call this morning, the last #CubeSat deployment from our 15th mission on @Space_Station is now complete! #TechEdSat8 was released at 16:45 GMT/10:45 CST. Congratulations to the teams at @NASAAmes and @SJSU - another huge success!pic.twitter.com/ZKqLrnoreQ|last=NanoRacks|date=2019-01-31|website=@NanoRacks|language=en|access-date=2019-01-31}} 33. ^{{Cite web|url=https://spaceflightnow.com/2019/02/13/cubesat-deployed-from-space-station-to-test-sample-return-technology/|title=CubeSat deployed from space station to test sample return technology – Spaceflight Now|last=Clark|first=Stephen|language=en-US|access-date=2019-02-20}} 34. ^{{Cite web|url=https://space.skyrocket.de/doc_sdat/techedsat-10.htm|title=TechEdSat 10 (TES 10)|website=space.skyrocket.de|access-date=2018-09-08}} 35. ^{{Cite web|url=https://www.mercurynews.com/2019/01/31/students-at-sjsu-collaborate-with-nasa-to-launch-a-satellite-into-space/#|title=Students at SJSU collaborate with NASA to launch a satellite into space |website=mercurynews.com|access-date=2019-01-31}} External links{{Portal|Spaceflight}}{{Commons category}}
4 : Spacecraft launched in 2012|CubeSats|Student satellites|Satellites deployed from the International Space Station |
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