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{{Infobox rocket
[[Berkas:Engine Start.jpg|jmpl|kiri|Bola api pada Roket Delta IV Heavy saat start. Pembakaran ini memang disengaja untuk membakar hidrogen yang dihasilkan dari mesin roket RS-68 agar tidak menjalar ke tempat lain.]][[Berkas:Delta IV Medium Rocket DSCS.jpg|thumb|300px]]
|name = Delta IV
|image = Delta IV Medium Rocket DSCS.jpg
|caption = Delta IV Medium membawa [[DSCS]] III-B6.


|function = [[Kendaraan peluncur luar angkasa]] Orbital
'''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.
|manufacturer = [[United Launch Alliance]]
|country-origin = [[Amerika Serikat]]
|cpl = 164+ Juta Dollar AS <ref>http://www.gao.gov/products/GAO-17-609</ref>
|height = 63–72 m (207–236 kaki)
|diameter = 5 m (16 kaki)
|mass = 249,500–733,400 kg (550,100–1,616,900 pon)
|stages = 2


|capacities=
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 .
{{Infobox rocket/payload
|location = [[Low Earth orbit|LEO]]
|kilos = {{cvt|11470-28790|kg}}<ref name=":1"/>
}}
{{Infobox rocket/payload
|location = [[Orbit transfer geostasioner|GTO]]
|kilos = {{cvt|4440-14220|kg}}
}}
|family = [[Delta (keluarga roket)]]
|comparable = {{flatlist|
* [[Atlas V]]


* [[Falcon 9]]
== Delta IV launches ==

* [[H-IIA]]

* [[Long March 3B]]

* [[Proton-M]]
}}
|status = [[Delta IV Heavy]] adalah sistem peluncuran aktif; Delta IV Medium, M+(4,2), M+(5,2), and M+(5,4) sudah pensiun.
|sites = [[Cape Canaveral Space Launch Complex 37|SLC-37B]], [[Cape Canaveral Air Force Station|Cape Canaveral]]<br/>[[Vandenberg Space Launch Complex 6|SLC-6]], [[Vandenberg Air Force Base|Vandenberg AFB]]

|launches = {{flatlist
| 40
* Medium: 3
* M+ (4,2): 15
* M+ (5,2): 3
* M+ (5,4): 8
* Heavy: 11
}}
|success = {{flatlist
| 39
* Medium: 3
* M+ (4,2): 15
* M+ (5,2): 3
* M+ (5,4): 8
* Heavy: 10
}}
|fail =
|partial = 1 (Heavy)
|other_outcome =
|first = {{plainlist|
* '''Medium/M+:''' 20 November 2002 ([[Eutelsat W5]])
* '''Heavy:''' 21 Desember 2004 ([[List of USA satellites|USA-181]])
}}
|last= {{plainlist|
* '''Medium/M+:''' 22 Agustus 2019 ([[USA-293]]/[[GPS satellite blocks|GPS III-2]])
* '''Heavy:''' 10 Desemember 2020 ([[List of NRO launches|NROL-44]])
}}
|payloads = {{flatlist|
* [[Geostationary Operational Environmental Satellite|GOES]]

* [[GPS Block IIF]]

* [[NROL|NRO classified payloads]]

* [[Wideband Global SATCOM|WGS]]

* [[Exploration Flight Test 1]]

* [[Parker Solar Probe]]
}}
|stagedata =
{{Infobox rocket/stage
|type = booster
|diff = Medium+
|name = [[Graphite-Epoxy Motor|GEM 60]]
|number = Medium+ (4,2), Medium+ (5,2): 2<br/>Medium+ (5,4): 4
|length = <!-- length of a single booster in metres, use {{cvt}}, optional -->
|diameter = <!-- diameter of a single booster in metres, use {{cvt}}, optional -->
|empty = <!-- empty mass of a single booster in kilograms, use {{cvt}}, optional -->
|gross = {{cvt|74158|lb|kg|order=flip}}
|propmass = <!-- propellant mass carried by a single booster in kilograms, use {{cvt}}, optional -->
|engines = off
|thrust = {{cvt|826.6|kN}}
|total = <!-- total thrust for all boosters in kN, use {{cvt}}, optional -->
|SI = {{cvt|245|isp}} (permukaan laut)
|burntime = 91 detik
|fuel = [[Hydroxyl-terminated polybutadiene|HTPB]] / [[Aluminum]]
}}
{{Infobox rocket/stage
|type = booster
|diff = Heavy
|name = [[Common Booster Core]] (CBC)
|number = 2
|length = <!-- length of a single booster in metres, use {{cvt}}, optional -->
|diameter = <!-- diameter of a single booster in metres, use {{cvt}}, optional -->
|empty = <!-- empty mass of a single booster in kilograms, use {{cvt}}, optional -->
|gross = {{cvt|226400|kg|lb}}
|propmass = <!-- propellant mass carried by a single booster in kilograms, use {{cvt}}, optional -->
|engines = 1 [[RS-68|RS-68A]]
|thrust = {{cvt|705000|lbf|kN|order=flip}} (permukaan laut)
|total = <!-- total thrust for all boosters in kN, use {{cvt}}, optional -->
|SI = '''[[Permukaan laut]]:''' {{cvt|360|isp}}<br/>'''[[Hampa udara]]:''' {{cvt|412|isp}}
|burntime = 242 detik<ref name=":1"/>
|fuel = [[LH2|LH<sub>2</sub>]] / [[LOX]]
}}
{{Infobox rocket/stage
|type = Tingkat
|diff =
|stageno = Pertama
|name = [[Common Booster Core]] (CBC)
|number = 2
|length = <!-- length of a single stage in metres, use {{cvt}}, optional -->
|diameter = <!-- diameter of a single stage in metres, use {{cvt}}, optional -->
|empty = <!-- empty mass of a single stage in kilograms, use {{cvt}}, optional -->
|gross = {{cvt|226,400|kg}}
|propmass = <!-- propellant mass carried by a single stage in kilograms, use {{cvt}}, optional -->
|engines = 1 [[RS-68A]]
|thrust = {{cvt|705,000|lbf|kN|order=flip}} (permukaan laut)
|SI = '''[[Permukaan laut]]:''' {{cvt|360|isp}}<br/>'''[[Hampa udara]]:''' {{cvt|412|isp}}
|burntime = 245 detik (328 detik dalam konfigurasi Heavy)<ref name=":1"/>
|fuel = [[LH2|LH<sub>2</sub>]] / [[LOX]]
}}
{{Infobox rocket/stage
|type = Tingkat
|diff =
|stageno = Kedua
|name = [[Delta Cryogenic Second Stage]] (DCSS)
|number = 1
|length = <!-- length of a single stage in metres, use {{cvt}}, optional -->
|diameter = <!-- diameter of a single stage in metres, use {{cvt}}, optional -->
|empty = <!-- empty mass of a single stage in kilograms, use {{cvt}}, optional -->
|gross = '''4-m''': {{cvt|24170|kg}}<br/>'''5-m''': {{cvt|30700|kg}}
|propmass = <!-- propellant mass carried by a stage in kilograms, use {{cvt}}, optional -->
|engines = 1 [[RL10|RL10-B-2]]
|thrust = {{cvt|110|kN|lbf}}
|SI = {{cvt|462|isp}}
|burntime = 850-1,125 detik
|fuel = [[LH2|LH<sub>2</sub>]] / [[LOX]]
}}
}}
'''Delta IV''' adalah roket peluncuran sekali pakai yang masih 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|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. Roket Delta IV tersedia dalam lima versi: Medium, Medium+ (4,2), Medium+ (5,2), Medium+ (5,4), dan [[Delta IV Heavy|Heavy]], yang disesuaikan dengan ukuran berat muatan yang dibawa. Delta IV dirancang untuk memenuhi kebutuhan militer AS dalam pengadaan peluncuran satelit militernya.

Roket dirakit di fasilitas Integrasi Horizontal di SLC-37B di Cape Canaveral, dan di SLC-6 di [[Pangkalan Angkatan Luar angkasa Vandenberg|Pangkalan Angkatan Udara Vandenberg]] .

Delta IV awalnya memiliki dua versi utama yang memungkinkan roket ini mampu untuk mencakup berbagai ukuran dan massa muatan, diantaranya : Versi Medium yang sudah pensiun (yang memiliki empat konfigurasi) dan [[Delta IV Heavy|Heavy]]. Pada 2019, hanya versi Heavy yang tetap aktif. Satelit atau Wahana antariksa yang akan diluncurkan ke orbit dengan bobot berat yang mencakup versi medium akan dipindah ke [[Atlas V]] atau [[Vulcan (roket)|Vulcan]] yang sedang dikembangkan. Delta IV direncanakan akan pensiun pada 2023.<ref name="SFN20200917">{{cite web|url=https://spaceflightnow.com/2020/09/17/ula-targeting-sept-26-for-next-delta-4-heavy-launch-attempt/|title=ULA targeting September 26 for next Delta 4-Heavy launch attempt|publisher=Spaceflight Now|date=17 September 2020|access-date=25 September 2020}}</ref>

== Riwayat Peluncuran Roket Delta IV ==
{| class="wikitable sortable" style="margin: 1em 1em 1em 0";
{| class="wikitable sortable" style="margin: 1em 1em 1em 0";
! No.
! No.
Baris 107: Baris 255:
| GSO
| GSO
|Success
|Success
|First Delta IV launch contracted by United Launch Alliance<br />Launch delayed due to damage to launch pad caused by a liquid oxygen leak<ref>
|First Delta IV launch contracted by United Launch Alliance<br />Launch delayed due to damage to launch pad caused by a liquid oxygen leak<ref>{{Cite web |first=Craig |last=Covault |date=March 9, 2007 |url=http://www.aviationweek.com/aw/generic/story.jsp?id=news/DELTA03097.xml&channel=space |title=Delta Pad Damage Assessed After Fuel Leak |publisher=Aviation Week |access-date=2022-01-16 |archive-date=2007-09-29 |archive-url=https://web.archive.org/web/20070929092828/http://www.aviationweek.com/aw/generic/story.jsp?id=news%2FDELTA03097.xml&channel=space |dead-url=yes }}</ref>
{{Cite web |first=Craig |last=Covault |date=March 9, 2007| url= http://www.aviationweek.com/aw/generic/story.jsp?id=news/DELTA03097.xml&channel=space |title= Delta Pad Damage Assessed After Fuel Leak |publisher= Aviation Week}}</ref>
|-
|-
|9
|9
|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= |archive-date=2010-06-04 |archive-url=https://www.webcitation.org/5qF7qFllk?url=http://www.spaceflightnow.com/tracking/index.html |dead-url=yes }}</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>
|Heavy
|Heavy
|337
|337
Baris 118: Baris 265:
|Reconnaissance satellite
|Reconnaissance satellite
| GSO
| GSO
|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>
|
|
|-
|-
Baris 184: Baris 331:
|Reconnaissance satellite
|Reconnaissance satellite
|[[Low Earth Orbit|LEO]]
|[[Low Earth Orbit|LEO]]
|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/>
|-
|-
Baris 195: Baris 342:
|Reconnaissance satellite
|Reconnaissance satellite
| GTO
| GTO
|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>
|
|
|-
|-
Baris 206: Baris 353:
|Navigation Satellite
|Navigation Satellite
| MEO
| MEO
|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>
|
|
|-
|-
Baris 250: Baris 397:
|Navigation Satellite
|Navigation Satellite
| MEO
| MEO
|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>
|-
|-
|22
|22
Baris 261: Baris 408:
|Military communications satellite
|Military communications satellite
|GTO
|GTO
|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>
|
|
|-
|-
Baris 272: Baris 419:
|Military communications satellite
|Military communications satellite
|GTO
|GTO
|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>
|
|
|-
|-
Baris 283: Baris 430:
|Reconnaissance satellite
|Reconnaissance satellite
|[[Low Earth Orbit|LEO]]
|[[Low Earth Orbit|LEO]]
|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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{{teknologi-stub}}
{{teknologi-stub}}


[[Kategori:Kendaraan peluncur luar angkasa|Delta IV]]
[[Kategori:Kendaraan peluncur antariksa|Delta IV]]

Revisi terkini sejak 16 Januari 2022 15.36

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 adalah roket peluncuran sekali pakai yang masih 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. Roket Delta IV tersedia dalam lima versi: Medium, Medium+ (4,2), Medium+ (5,2), Medium+ (5,4), dan Heavy, yang disesuaikan dengan ukuran berat muatan yang dibawa. Delta IV dirancang untuk memenuhi kebutuhan militer AS dalam pengadaan peluncuran satelit militernya.

Roket dirakit di fasilitas Integrasi Horizontal di SLC-37B di Cape Canaveral, dan di SLC-6 di Pangkalan Angkatan Udara Vandenberg .

Delta IV awalnya memiliki dua versi utama yang memungkinkan roket ini mampu untuk mencakup berbagai ukuran dan massa muatan, diantaranya : Versi Medium yang sudah pensiun (yang memiliki empat konfigurasi) dan Heavy. Pada 2019, hanya versi Heavy yang tetap aktif. Satelit atau Wahana antariksa yang akan diluncurkan ke orbit dengan bobot berat yang mencakup versi medium akan dipindah ke Atlas V atau Vulcan yang sedang dikembangkan. Delta IV direncanakan akan pensiun pada 2023.[3]

Riwayat Peluncuran Roket Delta IV

[sunting | sunting sumber]
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

[sunting | sunting sumber]
  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. Diarsipkan dari versi asli tanggal 2007-09-29. Diakses tanggal 2022-01-16. 
  9. ^ a b c "Tracking Station - Worldwide launch schedule". Spaceflight Now. Diarsipkan dari versi asli tanggal 2010-06-04. 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.