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|2009-01-18<br />02:47<ref name=spaceflightnow_schedule>{{Cite web|url=http://www.spaceflightnow.com/tracking/index.html |publisher=Spaceflight Now |title= Tracking Station - Worldwide launch schedule |accessdate=2008-10-13 |work= }}</ref><ref name="MSDB">{{Cite web|url= http://msdb.gsfc.nasa.gov/launches.php |title= Mission Set Database |first=Michael B. |last= Schaub |publisher= NASA GSFC/Honeywell TSI|accessdate= 2008-10-13}}</ref>
|2009-01-18<br />02:47<ref name=spaceflightnow_schedule>{{Cite web|url=http://www.spaceflightnow.com/tracking/index.html |publisher=Spaceflight Now |title= Tracking Station - Worldwide launch schedule |accessdate=2008-10-13 |work= }}</ref><ref name="MSDB">{{Cite web |url= http://msdb.gsfc.nasa.gov/launches.php |title= Mission Set Database |first= Michael B. |last= Schaub |publisher= NASA GSFC/Honeywell TSI |accessdate= 2008-10-13 |archive-date= 2013-07-20 |archive-url= https://web.archive.org/web/20130720172327/http://msdb.gsfc.nasa.gov/launches.php |dead-url= yes }}</ref>
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|Success<ref>{{Cite web|url=http://www.ulalaunch.com/site/pages/News.shtml#/29 |title=First ULA Delta IV Heavy NRO Mission Successfully Lifts Off From Cape Canaveral |publisher=United Launch Alliance |date=January 17, 2009 |accessdate=December 12, 2010 }}</ref>
|Success<ref>{{Cite web |url=http://www.ulalaunch.com/site/pages/News.shtml#/29 |title=First ULA Delta IV Heavy NRO Mission Successfully Lifts Off From Cape Canaveral |publisher=United Launch Alliance |date=January 17, 2009 |accessdate=December 12, 2010 |archive-date=2015-07-20 |archive-url=https://web.archive.org/web/20150720000149/http://www.ulalaunch.com/site/pages/News.shtml#/29 |dead-url=yes }}</ref>
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|Success<ref name=d352>{{cite web|title=United Launch Alliance Launches First West Coast Delta IV Heavy Mission|url=http://www.ulalaunch.com/site/pages/News.shtml#/63|publisher=[[United Launch Alliance]]|accessdate=21 January 2011|date=20 January 2011}}</ref>
|Success<ref name=d352>{{cite web|title=United Launch Alliance Launches First West Coast Delta IV Heavy Mission|url=http://www.ulalaunch.com/site/pages/News.shtml#/63|publisher=[[United Launch Alliance]]|accessdate=21 January 2011|date=20 January 2011|archive-date=2015-07-20|archive-url=https://web.archive.org/web/20150720000149/http://www.ulalaunch.com/site/pages/News.shtml#/63|dead-url=yes}}</ref>
|First Delta IV Heavy launch from Vandenberg<ref name=d352/>
|First Delta IV Heavy launch from Vandenberg<ref name=d352/>
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|Success<ref>{{cite web|title=ULA Successfully launches Fourth NRO mission in Six months|url=http://www.ulalaunch.com/site/pages/News.shtml#/67/|publisher=[[United Launch Alliance]]|accessdate=12 March 2011|date=11 March 2011}}</ref>
|Success<ref>{{cite web|title=ULA Successfully launches Fourth NRO mission in Six months|url=http://www.ulalaunch.com/site/pages/News.shtml#/67/|publisher=[[United Launch Alliance]]|accessdate=12 March 2011|date=11 March 2011|archive-date=2015-07-20|archive-url=https://web.archive.org/web/20150720000149/http://www.ulalaunch.com/site/pages/News.shtml#/67/|dead-url=yes}}</ref>
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|Success<ref>{{cite web|title=United Launch Alliance Marks the 50th Successful GPS Launch for the Air Force with the Delivery of the GPS IIF-2 Mission to orbit|url=http://www.ulalaunch.com/site/pages/News.shtml#/73/|publisher=[[United Launch Alliance]]|accessdate=16 July 2011|date=16 July 2011}}</ref>
|Success<ref>{{cite web|title=United Launch Alliance Marks the 50th Successful GPS Launch for the Air Force with the Delivery of the GPS IIF-2 Mission to orbit|url=http://www.ulalaunch.com/site/pages/News.shtml#/73/|publisher=[[United Launch Alliance]]|accessdate=16 July 2011|date=16 July 2011|archive-date=2015-07-20|archive-url=https://web.archive.org/web/20150720000149/http://www.ulalaunch.com/site/pages/News.shtml#/73/|dead-url=yes}}</ref>
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|Success<ref>{{cite web|title=United Launch Alliance Delta IV Rocket Successfully Launches Global Positioning System Satellite for the U.S. Air Force|url=http://www.ulalaunch.com/site/pages/News.shtml#/121/|publisher=[[United Launch Alliance]]|accessdate=4 October 2012|date=4 October 2012}}</ref>
|Success<ref>{{cite web|title=United Launch Alliance Delta IV Rocket Successfully Launches Global Positioning System Satellite for the U.S. Air Force|url=http://www.ulalaunch.com/site/pages/News.shtml#/121/|publisher=[[United Launch Alliance]]|accessdate=4 October 2012|date=4 October 2012|archive-date=2015-07-20|archive-url=https://web.archive.org/web/20150720000149/http://www.ulalaunch.com/site/pages/News.shtml#/121/|dead-url=yes}}</ref>
|Minor upper stage anomaly<ref>{{cite web|title=United Launch Alliance Provides Update to Global Positioning System Launch |url=http://www.ulalaunch.com/site/pages/News.shtml#/122/|publisher=[[United Launch Alliance]]|accessdate=7 October 2012|date=5 October 2012}}</ref>
|Minor upper stage anomaly<ref>{{cite web|title=United Launch Alliance Provides Update to Global Positioning System Launch|url=http://www.ulalaunch.com/site/pages/News.shtml#/122/|publisher=[[United Launch Alliance]]|accessdate=7 October 2012|date=5 October 2012|archive-date=2015-07-20|archive-url=https://web.archive.org/web/20150720000149/http://www.ulalaunch.com/site/pages/News.shtml#/122/|dead-url=yes}}</ref>
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|Success<ref>{{cite web|title=United Launch Alliance Launches Second Successful Mission for U.S. Air Force in Just Nine Days|url=http://www.ulalaunch.com/site/pages/News.shtml#/141/|publisher=[[United Launch Alliance]]|accessdate=25 May 2013|date=24 May 2013}}</ref>
|Success<ref>{{cite web|title=United Launch Alliance Launches Second Successful Mission for U.S. Air Force in Just Nine Days|url=http://www.ulalaunch.com/site/pages/News.shtml#/141/|publisher=[[United Launch Alliance]]|accessdate=25 May 2013|date=24 May 2013|archive-date=2015-07-20|archive-url=https://web.archive.org/web/20150720000149/http://www.ulalaunch.com/site/pages/News.shtml#/141/|dead-url=yes}}</ref>
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|Success<ref>{{cite web|title=United Launch Alliance Successfully Launches Second Wideband Global SATCOM Mission for U.S. Air Force in Less Than Three Months|url=http://www.ulalaunch.com/site/pages/News.shtml#/150/|publisher=[[United Launch Alliance]]|accessdate=8 August 2013|date=8 August 2013}}</ref>
|Success<ref>{{cite web|title=United Launch Alliance Successfully Launches Second Wideband Global SATCOM Mission for U.S. Air Force in Less Than Three Months|url=http://www.ulalaunch.com/site/pages/News.shtml#/150/|publisher=[[United Launch Alliance]]|accessdate=8 August 2013|date=8 August 2013|archive-date=2015-07-20|archive-url=https://web.archive.org/web/20150720000149/http://www.ulalaunch.com/site/pages/News.shtml#/150/|dead-url=yes}}</ref>
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|Success<ref>{{cite web|title=National Reconnaissance Office Mission Successfully Launches on World's Largest Rocket, the Unite Launch Alliance Delta IV Heavy|url=http://www.ulalaunch.com/site/pages/News.shtml#/152/|publisher=[[United Launch Alliance]]|accessdate=29 August 2013|date=28 August 2013}}</ref>
|Success<ref>{{cite web|title=National Reconnaissance Office Mission Successfully Launches on World's Largest Rocket, the Unite Launch Alliance Delta IV Heavy|url=http://www.ulalaunch.com/site/pages/News.shtml#/152/|publisher=[[United Launch Alliance]]|accessdate=29 August 2013|date=28 August 2013|archive-date=2015-07-20|archive-url=https://web.archive.org/web/20150720000149/http://www.ulalaunch.com/site/pages/News.shtml#/152/|dead-url=yes}}</ref>
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Revisi per 23 Januari 2021 18.34

Delta IV adalah sistem peluncuran sekali pakai aktif di keluarga roket Delta . Delta IV menggunakan roket yang dirancang oleh Boeing's Integrated Defense Systems division dan dibangun di fasilitas United Launch Alliance (ULA) di Decatur, Alabama . Perakitan akhir selesai di tempat peluncuran oleh ULA. Roket-roket yang dirancang untuk meluncurkan muatan ke orbit untuk program Angkatan Udara Amerika Serikat Evolved Launch Vehicle Expendable (EELV) dan bisnis satelit komersial. Delta IV roket tersedia dalam lima versi: Menengah, Menengah + (4,2), Medium + (5,2), Medium + (5,4), dan berat, yang disesuaikan dengan ukuran payload tertentu dan rentang berat. Delta IV terutama dirancang untuk memenuhi kebutuhan militer AS.

Roket dirakit di fasilitas Integrasi Horizontal untuk meluncurkan dari SLC-37B di Cape Canaveral, dan di fasilitas yang sama untuk peluncuran dari SLC-6 di Pangkalan Angkatan Udara Vandenberg .

Delta IV
Delta IV Medium membawa DSCS III-B6.
Delta IV Medium membawa DSCS III-B6.
Fungsi Kendaraan peluncur luar angkasa Orbital
Produsen United Launch Alliance
Negara asal Amerika Serikat
Biaya per peluncuran (2024) 164+ Juta Dollar AS [1]
Ukuran
Tinggi 63–72 m (207–236 kaki)
Diameter 5 m (16 kaki)
Massa 249,500–733,400 kg (550,100–1,616,900 pon)
Tingkatan 2
Kapasitas
Muatan menuju LEO
Massa11.470–28.790 kg (25.290–63.470 pon)[2]
Muatan menuju GTO
Massa4.440–14.220 kg (9.790–31.350 pon)
Roket terkait
Keluarga Delta (keluarga roket)
Roket sejenis
Sejarah peluncuran
Status Delta IV Heavy adalah sistem peluncuran aktif; Delta IV Medium, M+(4,2), M+(5,2), and M+(5,4) sudah pensiun.
Tempat peluncuran SLC-37B, Cape Canaveral
SLC-6, Vandenberg AFB
Total peluncuran
40
  • Medium: 3
  • M+ (4,2): 15
  • M+ (5,2): 3
  • M+ (5,4): 8
  • Heavy: 11
Keberhasilan
peluncuran
39
  • Medium: 3
  • M+ (4,2): 15
  • M+ (5,2): 3
  • M+ (5,4): 8
  • Heavy: 10
Kegagalan parsial 1 (Heavy)
Penerbangan perdana
Penerbangan terakhir
Muatan
Pendorong (Medium+) – GEM 60
Jumlah pendorongMedium+ (4,2), Medium+ (5,2): 2
Medium+ (5,4): 4
Bruto33.638 kg (74.158 pon)
Daya dorong8.266 kN (1.858.000 lbf)
Impuls spesifik245 s (2,40 km/s) (permukaan laut)
Durasi pembakaran91 detik
Bahan bakarHTPB / Aluminum
Pendorong (Heavy) – Common Booster Core (CBC)
Jumlah pendorong2
Bruto226.400 kg (499.100 pon)
Mesin1 RS-68A
Daya dorong3.140 kN (705.000 lbf) (permukaan laut)
Impuls spesifikPermukaan laut: 360 s (3,5 km/s)
Hampa udara: 412 s (4,04 km/s)
Durasi pembakaran242 detik[2]
Bahan bakarLH2 / LOX
Tingkat Pertama – Common Booster Core (CBC)
Bruto226,400 kg (499,13 pon)
Mesin1 RS-68A
Daya dorong3,13600 kN (705,000 lbf) (permukaan laut)
Impuls spesifikPermukaan laut: 360 s (3,5 km/s)
Hampa udara: 412 s (4,04 km/s)
Durasi pembakaran245 detik (328 detik dalam konfigurasi Heavy)[2]
Bahan bakarLH2 / LOX
Tingkat Kedua – Delta Cryogenic Second Stage (DCSS)
Bruto4-m: 24.170 kg (53.290 pon)
5-m: 30.700 kg (67.700 pon)
Mesin1 RL10-B-2
Daya dorong110 kN (25.000 lbf)
Impuls spesifik462 s (4,53 km/s)
Durasi pembakaran850-1,125 detik
Bahan bakarLH2 / LOX

Delta IV awalnya memiliki dua versi utama yang memungkinkan keluarga untuk mencakup berbagai ukuran dan massa muatan: Medium pensiunan (yang memiliki empat konfigurasi) dan Heavy. Pada 2019, hanya Heavy yang tetap aktif, dengan muatan yang sebelumnya akan terbang di Medium pindah ke Atlas V yang ada atau Vulcan yang akan datang. Pensiunnya Delta IV diantisipasi pada 2023[3].

Delta IV launches

No. Date/Time
(UTC) 		Type Serial-no. Startplace Payload Type of payload Orbit Outcome Remarks
1 2002-11-20
22:39 		Medium+(4,2) 293 CCAFS SLC-37B Eutelsat W5 Commercial communications satellite GTO Success First Delta IV launch
2 2003-03-11
00:59 		Medium 296 CCAFS SLC-37B USA-167 (DSCS-3 A3) Military communications satellite GTO Success First Delta IV Medium launch
First USAF EELV mission
3 2003-08-29
23:13 		Medium 301 CCAFS SLC-37B USA-170 (DSCS-3 B6) Military communications satellite GTO Success
4 2004-12-21
21:50 		Heavy 310 CCAFS SLC-37B DemoSat[4] / 3CS-1 / 3CS-2 Demonstration payload GSO (planned) Partial failure
  • First Delta IV Heavy launch
  • Premature cutoff of CBCs
  • DemoSat reached incorrect orbit, 3CS failed to reach orbit[5][6]
5 2006-05-24
22:11 		Medium+(4,2) 315 CCAFS SLC-37B GOES 13 (GOES-N) Weather satellite GTO Success
6 2006-06-28
03:33 		Medium+(4,2) 317 VAFB SLC-6 USA-184 (NROL-22) Reconnaissance satellite Molniya Success First Delta IV launch from Vandenberg[7]
7 2006-11-04
13:53 		Medium 320 VAFB SLC-6 USA-192 (DMSP F17) Military weather satellite SSO Success First Delta IV launch into a LEO/SSO
8 2007-11-11
01:50 		Heavy 329 CCAFS SLC-37B USA-197 (DSP-23) Missile Warning satellite GSO Success First Delta IV launch contracted by United Launch Alliance
Launch delayed due to damage to launch pad caused by a liquid oxygen leak[8]
9 2009-01-18
02:47[9][10] 		Heavy 337 CCAFS SLC-37B USA-202 (NROL-26) Reconnaissance satellite GSO Success[11]
10 2009-06-27
22:51[12] 		Medium+(4,2) 342 CCAFS SLC-37B GOES 14 (GOES-O) Weather satellite GTO Success[13]
11 2009-12-06
01:47[14] 		Medium+(5,4) 346 CCAFS SLC-37B USA-211 (WGS-3) Military communications satellite GTO Success[14] First Delta IV Medium+ (5,4) launch
12 2010-03-04
23:57 		Medium+(4,2) 348 CCAFS SLC-37B GOES 15 (GOES-P) Weather satellite GTO Success[15]
13 2010-05-28
03:00 		Medium+(4,2) 349 CCAFS SLC-37B USA-213 (GPS IIF SV-1) Navigation Satellite MEO Success[16]
14 2010-11-21
22:58[9] 		Heavy 351 CCAFS SLC-37B USA-223 (NROL-32) Reconnaissance satellite GSO Success[17]
15 2011-01-20
21:10 		Heavy 352 VAFB SLC-6 USA-224 (NROL-49) Reconnaissance satellite LEO Success[18] First Delta IV Heavy launch from Vandenberg[18]
16 2011-03-11
23:38[9] 		Medium+(4,2) 353 CCAFS SLC-37B USA-227 (NROL-27) Reconnaissance satellite GTO Success[19]
17 2011-07-16
06:41 		Medium+(4,2) 355 CCAFS SLC-37B USA-231 (GPS IIF SV-2) Navigation Satellite MEO Success[20]
18 2012-01-20
00:38 		Medium+(5,4) 358 CCAFS SLC-37B USA-233 (WGS-4) Military communications satellite GTO Success
19 2012-04-03
23:12 		Medium+(5,2) 359 VAFB SLC-6 USA-234 (NROL-25) Reconnaissance satellite LEO Success First flight in the Medium+(5,2) version
20 2012-06-29
13:15 		Heavy 360 CCAFS SLC-37B USA-237 (NROL-15) Reconnaissance satellite GSO Success[21] First flight of the RS-68A engine[21]
21 2012-10-04
12:10 		Medium+(4,2) 361 CCAFS SLC-37B USA-239 (GPS IIF SV-3) Navigation Satellite MEO Success[22] Minor upper stage anomaly[23]
22 2013-05-25
00:27 		Medium+(5,4) 362 CCAFS SLC-37B USA-243 (WGS-5) Military communications satellite GTO Success[24]
23 2013-08-08
00:29 		Medium+(5,4) 363 CCAFS SLC-37B USA-244 (WGS-6) Military communications satellite GTO Success[25]
24 2013-08-28
18:03 		Heavy 364 VAFB SLC-6 USA-245 (NROL-65) Reconnaissance satellite LEO Success[26]

List Date: August 28, 2013

Referensi

  1. ^ http://www.gao.gov/products/GAO-17-609
  2. ^ a b c Kesalahan pengutipan: Tag <ref> tidak sah; tidak ditemukan teks untuk ref bernama :1
  3. ^ "ULA targeting September 26 for next Delta 4-Heavy launch attempt". Spaceflight Now. 17 September 2020. Diakses tanggal 25 September 2020. 
  4. ^ "The DemoSat payload". Spaceflight Now. 2004-12-01. 
  5. ^ Justin Ray (December 22, 2004). "Delta 4-Heavy hits snag on test flight". Spaceflight Now. Diakses tanggal December 12, 2010. 
  6. ^ Justin Ray (December 22, 2004). "Air Force says plenty of good came from Delta 4 test". Spaceflight Now. Diakses tanggal December 12, 2010. 
  7. ^ Justin Ray (June 27, 2006). "New era of rocket launches begins at California base". Spaceflight Now. Diakses tanggal December 12, 2010. 
  8. ^ Covault, Craig (March 9, 2007). "Delta Pad Damage Assessed After Fuel Leak". Aviation Week. 
  9. ^ a b c "Tracking Station - Worldwide launch schedule". Spaceflight Now. Diakses tanggal 2008-10-13. 
  10. ^ Schaub, Michael B. "Mission Set Database". NASA GSFC/Honeywell TSI. Diarsipkan dari versi asli tanggal 2013-07-20. Diakses tanggal 2008-10-13. 
  11. ^ "First ULA Delta IV Heavy NRO Mission Successfully Lifts Off From Cape Canaveral". United Launch Alliance. January 17, 2009. Diarsipkan dari versi asli tanggal 2015-07-20. Diakses tanggal December 12, 2010. 
  12. ^ Harwood, William (June 27, 2009). "Delta 4 deploys an advanced weather observatory". Spaceflight Now. 
  13. ^ "NASA and NOAA's GOES-O Satellite Successfully Launched" (Siaran pers). NASA KSC. June 27, 2009. 
  14. ^ a b Ray, Justin (2009-12-05). "New communications craft launched for U.S. military". Spaceflight Now. Diakses tanggal 2009-12-06. 
  15. ^ "Teaming of Delta 4 rocket and GOES a sweet success". Spaceflight Now. 2010-03-04. 
  16. ^ "First-of-its-kind satellite for GPS launched into space". Spaceflight Now. 2010-05-28. 
  17. ^ "Huge rocket launches secret U.S. spy satellite". MSNBC.com. 22 November 2010. Diakses tanggal 22 November 2010. 
  18. ^ a b "United Launch Alliance Launches First West Coast Delta IV Heavy Mission". United Launch Alliance. 20 January 2011. Diarsipkan dari versi asli tanggal 2015-07-20. Diakses tanggal 21 January 2011. 
  19. ^ "ULA Successfully launches Fourth NRO mission in Six months". United Launch Alliance. 11 March 2011. Diarsipkan dari versi asli tanggal 2015-07-20. Diakses tanggal 12 March 2011. 
  20. ^ "United Launch Alliance Marks the 50th Successful GPS Launch for the Air Force with the Delivery of the GPS IIF-2 Mission to orbit". United Launch Alliance. 16 July 2011. Diarsipkan dari versi asli tanggal 2015-07-20. Diakses tanggal 16 July 2011. 
  21. ^ a b Kesalahan pengutipan: Tag <ref> tidak sah; tidak ditemukan teks untuk ref bernama ULA-PR-Jun12
  22. ^ "United Launch Alliance Delta IV Rocket Successfully Launches Global Positioning System Satellite for the U.S. Air Force". United Launch Alliance. 4 October 2012. Diarsipkan dari versi asli tanggal 2015-07-20. Diakses tanggal 4 October 2012. 
  23. ^ "United Launch Alliance Provides Update to Global Positioning System Launch". United Launch Alliance. 5 October 2012. Diarsipkan dari versi asli tanggal 2015-07-20. Diakses tanggal 7 October 2012. 
  24. ^ "United Launch Alliance Launches Second Successful Mission for U.S. Air Force in Just Nine Days". United Launch Alliance. 24 May 2013. Diarsipkan dari versi asli tanggal 2015-07-20. Diakses tanggal 25 May 2013. 
  25. ^ "United Launch Alliance Successfully Launches Second Wideband Global SATCOM Mission for U.S. Air Force in Less Than Three Months". United Launch Alliance. 8 August 2013. Diarsipkan dari versi asli tanggal 2015-07-20. Diakses tanggal 8 August 2013. 
  26. ^ "National Reconnaissance Office Mission Successfully Launches on World's Largest Rocket, the Unite Launch Alliance Delta IV Heavy". United Launch Alliance. 28 August 2013. Diarsipkan dari versi asli tanggal 2015-07-20. Diakses tanggal 29 August 2013. 
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