List of Delta IV Medium launches

Since November 2002, rockets from the Delta 4 Medium family have been launched 29 times, all of which were successful. Its last flight was with a 3rd generation GPS satellite in August 2019.

## Contents

* 1 About the Delta 4 Medium
* 2 Launch Statistics
* 2.1 Rocket configurations
* 2.2 Launch Outcomes
* 2.3 Launch sites
* 2.4 Orbits
* 2.5 Customers
* 3 Launch History
* 4 See also
* 5 References

## About the Delta 4 Medium

The Delta 4 Medium (also referred to as 'single stick'[1][2]) was available in four configurations: Medium, Medium+ (4,2), Medium+ (5,2), and Medium+ (5,4).[3]

The Delta 4 Medium (Delta 9040) was the most basic Delta IV. It featured a single CBC and a modified Delta 3 second stage, with 4-meter liquid hydrogen and liquid oxygen tanks (called a Delta Cryogenic Second Stage (DCSS)) and a 4-meter payload fairing. The Delta 4 Medium was capable of launching 4,200 kg to geostationary transfer orbit (GTO). From Cape Canaveral, GTO is 1804 m/s away from GEO. The mass of fairing and payload attach fittings have been subtracted from the gross performance.[4]

The Delta 4 Medium+ (4,2) (Delta 9240) had the same CBC and DCSS as the Medium, but with the addition of two Orbital ATK-built 1.5-m (60-in) diameter solid rocket booster Graphite-Epoxy Motors (GEM-60s) strap-on boosters to increase payload capacity to 6,150 kg to GTO.[4]

The Delta 4 Medium+ (5,2) (Delta 9250) was similar to the Medium+ (4,2), but had a 5-m–diameter DCSS and payload fairing for larger payloads. Because of the extra weight of the larger payload fairing and second stage, the Medium+ (5,2) could launch 5,072 kg to GTO.[4]

The Delta 4 Medium+ (5,4) (Delta 9450) was similar to the Medium+ (5,2), but used four GEM-60s instead of two, enabling it to lift 6,882 kg to GTO.[4]

To encapsulate the satellite payload, a variety of different payload fairings were available. A stretched Delta III 4-meter diameter composite payload fairing was used on 4-meter Medium versions, while an enlarged, 5-meter diameter composite fairing was used on 5-meter Medium versions.

The Medium (4,2) version last flew on 22 August 2019, marking the retirement of the Delta 4 Medium variants.[3][5]

## Launch Statistics

### Rocket configurations

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### Launch Outcomes

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### Launch sites

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### Orbits

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### Customers

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## Launch History

Flight  | Date / time (UTC)  | Rocket Configuration  | Launch site  | Payload  | Payload mass  | Orbit  | Customer  | Launch
outcome

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1  | November 20, 2002
22:39  | Delta IV-M+ (4,2)  | CCAFS SLC-37B  | Eutelsat W5  | 3,086 pounds (1,400 kilograms)  | GTO | Eutelsat | Success[6]
First Delta IV launch, Commercial communications satellite
2  | March 11, 2003
00:59  | Delta IV-M  | CCAFS SLC-37B  | USA-167 (DSCS-3 A3)  | Classified  | GTO | US Air Force | Success[7]
Military communications satellite, First Delta 4 Medium launch, First USAF EELV mission
3  | August 29, 2003
23:13  | Delta IV-M  | CCAFS SLC-37B  | USA-170 (DSCS-3 B6)  | Classified  | GTO | US Air Force | Success[8]
Military communications satellite
4  | May 24, 2006
22:11  | Delta IV-M+ (4,2)  | CCAFS SLC-37B  | GOES-N (GOES-13)  | 6,908 pounds (3,133 kilograms)  | GTO | NASA/NOAA  | Success[9]
First Delta IV launch for NASA, Weather satellite
5  | June 28, 2006
03:33  | Delta IV-M+ (4,2)  | VAFB SLC-6  | NROL-22  | Classified  | Molniya | US NRO  | Success[10]
First Delta IV launch from Vandenberg, Reconnaissance satellite
6  | November 4, 2006
13:53  | Delta IV-M  | VAFB SLC-6  | DMSP F17  | Classified  | SSO | DoD  | Success[11]
First Delta IV launch into a LEO/SSO, Military weather satellite
7  | June 27, 2009
22:51  | Delta IV-M+ (4,2)  | CCAFS SLC-37B  | GOES-O (GOES-14)  | 6,908 pounds (3,133 kilograms)  | GTO | NASA/NOAA  | Success[12]
Weather satellite
8  | December 6, 2009
01:47  | Delta IV-M+ (5,4)  | CCAFS SLC-37B  | USA-211 (WGS-3)  | 13,199 pounds (5,987 kilogarms)  | GTO | US Air Force | Success[13]
First Delta 4 Medium+ (5,4) launch, Communication satellite
9  | 4 March 2010
23:57  | Delta IV M+ (4,2) | CCAFS SLC-37B | GOES-P (GOES-15)  | 7,139 pounds (3,238 kilograms)  | GTO | NASA | Success[14]
NOAA Weather satellite in the Geostationary Operational Environmental Satellite (GOES) program. Replaced GOES-11 as the GOES West satellite.
10  | 28 May 2010
03:00  | Delta IV M+ (4,2)  | CCAFS SLC-37B | USA-213 (GPS IIF SV-1)  | 3,594 pounds (1,630 kilograms)  | MEO | US Air Force | Success[15]
Navigation satellite
11  | 11 March 2011
23:38  | Delta IV M+ (4,2)  | CCAFS SLC-37B | USA-227 (NROL-27)  | 5,148 pounds (2335 kilogarms)  | GTO  | US NRO  | Success
Military comsat.
12  | 16 July 2011
06:41  | Delta IV M+ (4,2)  | CCAFS SLC-37B | USA-232 (GPS IIF-2)  | 3,594 pounds (1,630 kilograms)  | MEO | US Air Force | Success[16]
Navigation satellite
13  | 20 January 2012

00:38

| Delta IV M+ (5,4)  | CCAFS SLC-37B | USA-233 (WGS-4)  | 13,199 pounds (5,987 kilogarms)  | GTO  | US Air Force | Success[17]
Military comsat
14  | 3 April 2012
23:12  | Delta IV M+ (5,2)  | VAFB SLC-6  | USA-234 (NROL-25)  | Classified  | LEO | US NRO  | Success[18]
First Delta 4 Medium+ (5,2) launch, Reconnaissance satellite
15  | 4 October 2012
12:10  | Delta IV M+ (4,2)  | CCAFS SLC-37B | USA-239 (GPS IIF-3)  | 3,594 pounds (1,630 kilograms)  | MEO | US Air Force | Success[19]
Upper stage anomaly,[20] Satellite navigation
16  | 25 May 2013
00:27  | Delta IV M+ (5,4)  | CCAFS SLC-37B | USA-243 (WGS-5)  | 13,199 pounds (5,987 kilogarms)  | GTO  | US Air Force | Success[21]
Military comsat
17  | 8 August 2013
00:29  | Delta IV M+ (5,4)  | Cape Canaveral Air Force Station , SLC-37B | USA-244 (WGS-6)  | 13,199 pounds (5,987 kilogarms)  | GTO  | US Air Force | Success[22]
Military comsat
18  | 21 February 2014
01:59  | Delta IV M+ (4,2)  | CCAFS SLC-37B | USA-248 (GPS IIF-5)  | 3,594 pounds (1,630 kilograms)  | MEO | US Air Force | Success[23]
25th Delta IV launch, Satellite navigation
19  | 17 May 2014
00:03  | Delta IV M+ (4,2)  | CCAFS SLC-37B | USA-251 (GPS IIF-6)  | 3,594 pounds (1,630 kilograms)  | MEO | US Air Force | Success[24]
Navigation satellite
20  | 28 July 2014
23:28  | Delta IV M+ (4,2)  | CCAFS SLC-37B | USA 253-255 (AFSPC-4 (GSSAP #1/#2/ANGELS))  | Classified  | GEO | DoD/AFRL  | Success[25]
Space surveillance / Technology demonstration
21  | 25 March 2015
18:36  | Delta IV M+ (4,2)  | CCAFS SLC-37B | USA-260 (GPS IIF-9)  | 3,594 pounds (1,630 kilograms)  | MEO | US Air Force | Success[26]
Final launch of baseline RS-68 engine,[27] Navigation satellite
22  | 24 July 2015
00:07  | Delta IV M+ (5,4)  | CCAFS SLC-37B | USA-263 (WGS-7)  | 13,199 pounds (5,987 kilogarms)  | GTO  | DoD  | Success[28]
Second flight with an RS-68A engine; New standard for Delta IV rockets, Military comsat
23  | 10 February 2016, 11:40  | Delta IV M+ (5,2)  | VAFB SLC-6  | USA-267 (NROL-45)  | Classified  | LEO | US NRO  | Success[29]
Reconnaissance satellite
24  | 19 August 2016
04:52  | Delta IV M+ (4,2)  | CCAFS SLC-37B | USA-270/271 (AFSPC-6 (GSSAP #3/#4))  | Classified  | GEO | DoD  | Success[30]
Space surveillance satellite
25  | 7 December 2016

23:53

| Delta IV M+ (5,4)  | CCAFS SLC-37B | USA-272 (WGS-8)  | 13,199 pounds (5,987 kilogarms)  | GTO  | DoD  | Success[31]
Military comsat
26  | 19 March 2017
00:18  | Delta IV M+ (5,4)  | CCAFS SLC-37B | USA-275 (WGS-9)  | 13,199 pounds (5,987 kilogarms)  | GTO  | DoD  | Success[32]
Military comsat
27  | 12 January 2018
22:11  | Delta IV M+ (5,2)  | VAFB SLC-6  | USA-281 (NROL-47)  | Classified  | LEO | US NRO  | Success[33]
Final flight of Delta IV M+(5,2) variant. Reconnaissance satellite.
28  | 16 March 2019
00:26  | Delta IV M+ (5,4)  | CCAFS, SLC-37B | USA-291 (WGS-10)  | 13,199 pounds (5,987 kilogarms)  | GTO  | DoD  | Success[34]
Final flight of Delta IV M+(5,4) variant. Military comsat.
29  | 22 August 2019
13:06  | Delta IV M+ (4,2)  | Cape Canaveral Air Force Station , SLC-37B | USA-293 (GPS III-2)  | 8,168 pounds (3,705 kilograms)  | MEO | US Air Force | Success[35]
Final flight of Delta IV M+(4,2) variant. 3rd generation Global Positioning Satellite (GPS)

## See also

Delta 4 Medium

Delta 4 Medium launch carrying DSCS III-B6.

Function| Orbital launch vehicle
Manufacturer| United Launch Alliance
Country of origin| United States
Cost per launch| US$164+ million[36]
Size
Height| 63–72 m (207–236 ft)
Diameter| 5 m (16 ft)
Mass| 550,000 lb (250,000 kg)
Stages| 2
Capacity
Payload to LEO| 25,287 lb (11,470 kg)
Payload to GTO| 9,799 lb (4,445 kg)
Associated rockets
Family| Delta Delta 4 Medium
Comparable|

* Atlas 5
* Falcon 9
* H-2A
* Long March 3B
* Proton-M

Launch history
Status| Retired
Launch sites| SLC-37B, Cape Canaveral Air Force Station
SLC-6, Vandenberg Air Force Base
Total launches|

* Medium: 3
* M+ (4,2): 15
* M+ (5,2): 3
* M+ (5,4): 8

Successes| 29
First flight| 20 November 2002 (Eutelsat W5)
Last flight| 22 August 2019 (USA-293/GPS III-2)
Notable payloads|

* GOES
* GPS Block IIF
* NRO classified payloads
* WGS

First stage – CBC
Gross mass| 226,400 kg (499,100 lb)
Engines| 1 RS-68A
Thrust| 3,140 kN (705,000 lbf) (sea level)
Specific impulse| Sea level: 360 s (3.5 km/s)
Vacuum: 412 s (4.04 km/s)
Burn time| 245 seconds (328 seconds in Heavy configuration)
Fuel| LH2 / LOX
Second stage – Delta Cryogenic Second Stage (DCSS)
Gross mass| 4-m: 24,170 kg (53,290 lb)
5-m: 30,700 kg (67,700 lb)
Engines| 1 RL10-B-2
Thrust| 110 kN (25,000 lbf)
Specific impulse| 462 s (4.53 km/s)
Burn time| 850-1,125 seconds
Fuel| LH2 / LOX

* Delta 4 Heavy
* Delta 4 Medium
* Delta 4
* Delta rocket family
* List of Thor and Delta launches
* List of 2000-2009 Thor and Delta launches
* List of 2010-2019 Thor and Delta launches
* List of Delta 4-M launches
* List of Delta 4 Heavy launches

## References

1. ↑ Clark, Stephen. "Final 'single stick' Delta 4-Medium rocket arrives at Florida launch pad – Spaceflight Now" (in en-US). https://spaceflightnow.com/2019/06/07/final-single-stick-delta-4-medium-rocket-arrives-at-florida-launch-pad/.
2. ↑ Ray, Justin. "Air Force assigns new Delta 4 rocket launch – Spaceflight Now" (in en-US). https://spaceflightnow.com/2015/09/10/air-force-assigns-new-delta-4-rocket-launch/.
3. ↑ 3.0 3.1 Gebhardt, Chris (2019-08-22). "Delta IV Medium's well-earned retirement with GPS finale". NASASpaceFlight.com. https://www.nasaspaceflight.com/2019/08/delta-iv-medium-retirement-gps-finale/.
4. ↑ 4.0 4.1 4.2 4.3 "Delta IV Launch Services User's Guide". United Launch Alliance. June 2013. pp. 2–10, 5-3. http://www.ulalaunch.com/uploads/docs/Launch_Vehicles/Delta_IV_Users_Guide_June_2013.pdf.
5. ↑ Berger, Eric (2019-08-22). "The last single-stick Delta rocket launched Thursday, and it put on a show". Ars Technica. https://arstechnica.com/science/2019/08/the-last-single-stick-delta-rocket-launched-thursday-and-it-put-on-a-show/.
6. ↑ "Boeing's Delta 4 rocket debuts successfully". Spaceflight Now. November 20, 2002. http://www.spaceflightnow.com/delta/delta4/021120launch/.
7. ↑ "Delta 4 rocket successfully begins military service". Spaceflight Now. March 10, 2003. http://www.spaceflightnow.com/delta/d296/.
8. ↑ "Delta 4 rocket delivers last Air Force DSCS satellite". Spaceflight Now. August 29, 2003. http://www.spaceflightnow.com/delta/d300/.
9. ↑ "Weather observatory for Americas ascends to space". Spaceflight Now. May 24, 2006. http://www.spaceflightnow.com/delta/d315/.
10. ↑ "New era of rocket launches begins at California base". Spaceflight Now. June 27, 2006. http://www.spaceflightnow.com/delta/d317/.
11. ↑ "Military weather satellite rockets into polar orbit". Spaceflight Now. November 4, 2006. http://www.spaceflightnow.com/delta/d320/.
12. ↑ "NASA and NOAA's GOES-O Satellite Successfully Launched". NASA KSC. 2009-06-27. http://www.nasa.gov/centers/kennedy/news/releases/2009/release-20090627.html.
13. ↑ Ray, Justin (2009-12-05). "New communications craft launched for U.S. military". Spaceflight Now. http://www.spaceflightnow.com/delta/d346/.
14. ↑ "United Launch Alliance Successfully Launches NASA/NOAA Weather Satellite Mission". United Launch Alliance. 4 March 2010. http://www.ulalaunch.com/site/pages/News.shtml#/47.
15. ↑ "ULA Marks Delta 50th Anniversary with Successful Delta IV GPS IIF SV-1 Launch". United Launch Alliance. 27 May 2010. http://www.ulalaunch.com/site/pages/News.shtml#/50.
16. ↑ "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. http://www.ulalaunch.com/site/pages/News.shtml#/73/.
17. ↑ "United Launch Alliance Delta IV Rocket Successfully Launches US Air Force's Wideband Global SATCOM-4 (WGS-4) Satellite". United Launch Alliance. 19 January 2012. http://www.ulalaunch.com/site/pages/News.shtml#/93/.
18. ↑ "United Launch Alliance Delta IV Rocket Successfully Launches Payload for the National Reconnaissance Office". United Launch Alliance. 3 April 2012. http://www.ulalaunch.com/site/pages/News.shtml#/99/.
19. ↑ "United Launch Alliance Delta IV Rocket Successfully Launches Global Positioning System Satellite for the U.S. Air Force". United Launch Alliance. 4 October 2012. http://www.ulalaunch.com/site/pages/News.shtml#/121/.
20. ↑ "United Launch Alliance Provides Update to Global Positioning System Launch". United Launch Alliance. 5 October 2012. http://www.ulalaunch.com/site/pages/News.shtml#/122/.
21. ↑ "United Launch Alliance Launches Second Successful Mission for U.S. Air Force in Just Nine Days". United Launch Alliance. 24 May 2013. http://www.ulalaunch.com/site/pages/News.shtml#/141/.
22. ↑ "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. http://www.ulalaunch.com/site/pages/News.shtml#/150/.
23. ↑ "United Launch Alliance Successfully Launches 25th Delta IV Mission Carrying Global Positioning System Satellite for the U.S. Air Force". United Launch Alliance. 21 February 2014. http://www.ulalaunch.com/site/pages/News.shtml#/167/.
24. ↑ "United Launch Alliance Successfully Launches Second Global Positioning System Satellite for the U.S. Air Force in Less Than Three Months". United Launch Alliance. 16 May 2014. http://www.ulalaunch.com/ula-successfully-launches-second-global.aspx?title=United+Launch+Alliance+Successfully+Launches+Second+Global+Positioning+System+Satellite+for+the+U.S.+Air+Force+in+Less+Than+Three+Months.
25. ↑ "United Launch Alliance Marks 85th Successful Launch by Delivering Three Satellites into Orbit for the U.S. Air Force". United Launch Alliance. 29 July 2014. http://www.ulalaunch.com/ULA-Delta-IV-Launches-AFSPC-4.aspx?title=United+Launch+Alliance+Marks+85th+Successful+Launch+by+Delivering+Three+Satellites+into+Orbit+for+the+U.S.+Air+Force+.
26. ↑ "United Launch Alliance Successfully Launches Second Mission in Less than Two Weeks". United Launch Alliance. 26 March 2015. http://www.ulalaunch.com/ula-launches-gpsiif9-for-US-Air-Force.aspx?title=United+Launch+Alliance+Successfully+Launches+Second+Mission+in+Less+than+Two+Weeks.
27. ↑ "Delta 4 rocket evolving to upgraded main engine". Spaceflight Now. 27 March 2015. http://spaceflightnow.com/2015/03/27/delta-4-rocket-evolving-the-upgraded-main-engine/.
28. ↑ "United Launch Alliance Successfully Launches WGS-7". United Launch Alliance. 23 July 2015. http://www.ulalaunch.com/ula-successfully-launches-wgs7.aspx.
29. ↑ "United Launch Alliance Successfully Launches NROL-45 Payload for the National Reconnaissance Office". United Launch Alliance. 10 February 2016. http://www.ulalaunch.com/ula-successfully-launches-nrol45.aspx?title=United+Launch+Alliance+Successfully+Launches+NROL-45+Payload+for+the+National+Reconnaissance+Office&Category=1.
30. ↑ "United Launch Alliance Successfully Launches AFSPC6 Mission for the U.S. Air Force". United Launch Alliance. 19 August 2016. http://www.ulalaunch.com/ula-successfully-launches-afspc6.aspx.
31. ↑ "United Launch Alliance Successfully Launches WGS8 Mission for the U.S. Air Force". 7 December 2016. http://www.ulalaunch.com/ula-successfully-launches-wgs8.aspx?title=United+Launch+Alliance+Successfully+Launches+WGS-8+Mission+for+the+U.S.+Air+Force.
32. ↑ "Delta IV to Launch WGS-9 for the U.S. Air Force". 18 March 2017. http://www.ulalaunch.com/delta-iv-to-launch-wgs9.aspx?title=Delta+IV+to+Launch+WGS-9+for+the+U.S.+Air+Force.
33. ↑ "United Launch Alliance Successfully Launches NROL-47 Mission for the National Reconnaissance Office". 12 January 2018. http://www.ulalaunch.com/ula-successfully-launches-nrol47-mission.aspx.
34. ↑ "United Launch Alliance Successfully Launches WGS-10 Mission". 16 March 2019. https://www.ulalaunch.com/about/news-detail/2019/03/16/united-launch-alliance-successfully-launches-wgs-10-mission.
35. ↑ "United Launch Alliance Successfully Launches GPS III Satellite for U.S. Air Force Space and Missile Systems Center". 22 August 2019. https://www.ulalaunch.com/about/news/2019/08/22/united-launch-alliance-successfully-launches-gps-iii-satellite-for-u.s.-air-force-space-and-missile-systems-center.
36. ↑ http://www.gao.gov/products/GAO-17-609

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