词条 | USA-94 |
释义 |
| name = USA-94 | image = | image_caption = | insignia = | mission_type = Navigation | operator = US Air Force | COSPAR_ID = 1993-054A[1] | SATCAT = 22779[1] | mission_duration = 7.5 years (planned)[3] 19.6 years (achieved) | spacecraft = | spacecraft_type = GPS Block IIA[3] | manufacturer = Rockwell[3] | launch_mass = {{convert|1816|kg}}[3] | dimensions = | power = | launch_date = {{start-date|30 August 1993, 12:38:00|timezone=yes}} UTC | launch_rocket = {{nowrap|Delta II 7925-9.5,}} D222[7] | launch_site = Cape Canaveral LC-17B[7] | entered_service = | disposal_type = Placed in a graveyard orbit | deactivated = {{end-date|10 June 2016}} | orbit_slot = | orbit_epoch = | orbit_reference = Geocentric | orbit_regime = Medium Earth (Semi-synchronous) | orbit_periapsis = {{convert|20109|km}}[9] | orbit_apoapsis = {{convert|20257|km}}[9] | orbit_inclination = 54.8 degrees[9] | orbit_period = 718 minutes[9] | apsis = gee }} USA-94, also known as GPS IIA-13, GPS II-22 and GPS SVN-35, was an American navigation satellite which formed part of the Global Positioning System. It was the thirteenth of nineteen Block IIA GPS satellites to be launched. USA-94 was launched at 12:38:00 UTC on 30 August 1993, atop a Delta II carrier rocket, flight number D222, flying in the 7925-9.5 configuration.[2] The launch took place from Launch Complex 17B at the Cape Canaveral Air Force Station,[3] and placed USA-94 into a transfer orbit. The satellite raised itself into medium Earth orbit using a Star-37XFP apogee motor.[4] On 1 October 1993, USA-94 was in an orbit with a perigee of {{convert|20109|km}}, an apogee of {{convert|20257|km}}, a period of 718 minutes, and 54.8 degrees of inclination to the equator.[5] It broadcast the PRN 30 signal, and operated in slot 4, and later 5, of plane B of the GPS constellation.[6] The satellite had a mass of {{convert|1816|kg}} and a design life of 7.5 years.[4] It was initially decommissioned on 26 March 2009 and then kept as a residual satellite.[7] SVN 35 was then recalled to replace SVN 30 in the active constellation on 16 August 2011.[8][9] It was then decommissioned again on 1 May 2013, after almost 20 years in orbit,[10] and finally placed in a disposal orbit approximately 1000 km above the operational constellation and deactivated on 10 June 2016.[11] References1. ^1 {{cite web|url=http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1993-054A|title=Navstar 2A-13|publisher=US National Space Science Data Center|accessdate=10 July 2012}} {{Portal|Spaceflight}}{{GPS satellites}}{{Orbital launches in 1993}}{{US-spacecraft-stub}}2. ^1 2 {{cite web|url=http://planet4589.org/space/log/launchlog.txt|title=Launch Log|publisher=Jonathan's Space Page|first=Jonathan|last=McDowell|accessdate=10 July 2012}} 3. ^{{cite web|url=http://planet4589.org/space/lvdb/list2.html|title=Launch List|publisher=Jonathan's Space Page|work=Launch Vehicle Database|first=Jonathan|last=McDowell|accessdate=10 July 2012}} 4. ^1 2 3 4 5 {{cite web|url=http://space.skyrocket.de/doc_sdat/navstar-2a.htm|title=GPS-2A (Navstar-2A)|first=Gunter|last=Krebs|work=Gunter's Space Page|accessdate=10 July 2012}} 5. ^1 2 3 4 {{cite web|url=http://planet4589.org/space/log/satcat.txt|title=Satellite Catalog|publisher=Jonathan's Space Page|first=Jonathan|last=McDowell|accessdate=10 July 2012}} 6. ^{{cite web|url=http://www.astronautix.com/project/navstar.htm|title=Navstar|publisher=Encyclopedia Astronautica|first=Mark|last=Wade|accessdate=10 July 2012}} 7. ^{{cite web|url=http://www.navcen.uscg.gov/?Do=gpsShowNanu&num=2009023|title=NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2009023|publisher=United States Coast Guard|accessdate=23 June 2016}} 8. ^{{cite web|url=http://www.navcen.uscg.gov/?Do=gpsShowNanu&num=2011062|title=NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2011062|publisher=United States Coast Guard|accessdate=23 June 2016}} 9. ^{{cite web|url=http://www.insidegnss.com/node/2731|title=2SOPS Takes Over IIF-2, Moves to Replace SVN-30 with Spare|publisher=Inside GNSS|accessdate=23 June 2016}} 10. ^{{cite web|url=http://www.navcen.uscg.gov/?Do=gpsShowNanu&num=2013027|title=NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2013027|publisher=United States Coast Guard|accessdate=3 May 2013}} 11. ^{{cite web|url=http://www.schriever.af.mil/News/Article-Display/Article/805847/obituary-farewell-to-svn-35|title=Obituary: Farewell to SVN-35|publisher=United States Air Force|accessdate=23 June 2016}} 3 : Spacecraft launched in 1993|GPS satellites|USA satellites |
随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识,基本涵盖了大多数领域的百科知识,是一部内容自由、开放的电子版国际百科全书。