List Of Delta 4-M Launches
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The Delta IV 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 family often flew with Global Positioning System (GPS) satellites. It flew 6 second generation Global Positioning System (GPS) satellites to orbit. After the second generation Global Positioning System (GPS) had all been launched, it launch a third generation Global Positioning System (GPS) only it final flight. The Medium (4,2) version last flew on 22 August 2019, marking the retirement of the Delta IV Medium variants.[3][4]
Launch Statistics
 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[5] |
| 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 |
|
| Launch history | |
| Status | Retired |
| Launch sites | SLC-37B, Cape Canaveral Air Force Station SLC-6, Vandenberg Air Force Base |
| Total launches | 3 |
| Successes | 3 |
| First flight | 20 November 2002 (Eutelsat W5) |
| Last flight | November 4, 2006 (DMSP 17) |
| Notable payloads |
|
| 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 |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | March 11, 2003
00:59 |
Delta 4-M | CCAFS SLC-37B | USA-167 (DSCS-3 A3) | Classified | GTO | US Air Force | Success[6] |
| Military communications satellite, First Delta 4 Medium launch, First USAF EELV mission | ||||||||
| 2 | August 29, 2003
23:13 |
Delta 4-M | CCAFS SLC-37B | USA-170 (DSCS-3 B6) | Classified | GTO | US Air Force | Success[6] |
| Military communications satellite | ||||||||
| 3 | November 4, 2006
13:53 |
Delta 4-M | VAFB SLC-6 | DMSP F17 | Classified | SSO | DoD | Success[7] |
| First Delta 4 launch into a LEO/SSO, Military weather satellite. Final Delta 4-M launch. | ||||||||
See also
- 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
References
- ↑ 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/.
- ↑ 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/.
- ↑ 3.0 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/.
- ↑ 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/.
- ↑ Office, U. S. Government Accountability. "Surplus Missile Motors: Sale Price Drives Potential Effects on DOD and Commercial Launch Providers". https://www.gao.gov/products/gao-17-609.
- ↑ 6.0 6.1 "Delta 4 rocket successfully begins military service". Spaceflight Now. March 10, 2003. http://www.spaceflightnow.com/delta/d296/.
- ↑ "Military weather satellite rockets into polar orbit". Spaceflight Now. November 4, 2006. http://www.spaceflightnow.com/delta/d320/.
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Categories: [Spaceflight] [Lists of rocket launches]
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