Delta B

Delta B
	Delta B prior to the launch of TIROS-8
Function	Expendable launch system
Country of origin	United States
Launch history
Status	Retired
Launch sites	Cape Canaveral LC-17
Total launches	9
Success(es)	8
Failure(s)	1
First flight	13 December 1962
Last flight	19 March 1964

The Delta B, or Thor-Delta B was an American expendable launch system used for nine orbital launches between 1962 and 1964. A derivative of the Thor-Delta, it was a member of the Delta family of rockets.

The first stage was a Thor missile in the DM-21 configuration, and the second stage was the Delta D, which was derived from the earlier Delta. An Altair solid rocket motor was used as a third stage.

All nine launches occurred from Cape Canaveral Air Force Station Launch Complex 17. Most of the launches carried communications satellites, including Syncom-1 and Syncom-2. Syncom-1 was intended to be the first satellite to be placed into a geosynchronous orbit, however the spacecraft malfunctioned prior to reaching this orbit. Syncom-2 subsequently became the first geosynchronous satellite, and was placed at 55° west of the Greenwich Meridian. The final launch failed due to third stage underperformance, all other launches were successful.

References

Wade, Mark. "Delta". Encyclopedia Astronautica. Archived from the original on 2008-07-24. Retrieved 2009-02-09.
Krebs, Gunter. "Thor family". Gunter's Space Page. Retrieved 2009-02-09.

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Orbital launch systems
List of orbital launch systems Comparison of orbital launch systems
Current	Angara A5 Antares 230+ Ariane 5 Atlas V Ceres-1 Delta IV Heavy Electron Epsilon Falcon 9 Block 5 Falcon Heavy GSLV Mk II Mk III H-IIA Hyperbola-1 Jielong 1 Kuaizhou 1 1A 11^† Kaituozhe 2 LauncherOne Long March 2C 2D 2F 3A 3B/E 3C 4B 4C 5 5B 6 7 7A^† 8 11 Minotaur I IV V C OS-M1^† Pegasus XL Proton-M PSLV Qased Rocket 3^† Safir Shavit Simorgh^† Soyuz-2 2.1a / STA 2.1b / STB 2-1v Unha Vega Zenit 3SL 3SLB 3F Zhuque-1^†
In development	Amur Angara 1.2 Ariane 6 Bloostar Cyclone-4M Eris Firefly Alpha Beta H3 Hyperbola-2 Irtysh Kuaizhou 21 31 Long March 921 rocket 9 Miura 5 New Glenn New Line 1 Nuri OS-M2 OS-M4 Orbex Prime SLS Soyuz-7 SSLV Starship Terran 1 Vega C Vega E Vulcan Zero Zhuque-2
Retired	Antares 110 120 130^† 230 Ariane 1 2 3 4 ASLV Athena I II Atlas B D E/F G H I II III LV-3B SLV-3 Able Agena Centaur Black Arrow Conestoga^† Delta A B C D E G J L M N 0100 1000 2000 3000 4000 5000 II III IV Diamant Dnepr Energia Europa^† Falcon 1 Falcon 9 v1.0 v1.1 v1.2 "Full Thrust" Feng Bao 1 GSLV Mk I H-I H-II H-IIB Juno I Juno II Kaituozhe-1 Kosmos 1 2I 3 3M Lambda 4S Long March 1 1D^† 2A 2E 3 3B 4A Mu 4S 3C 3H 3S 3SII V N1^† N-I N-II Naro-1 Paektusan Pilot-2^† R-7 Luna Molniya M L Polyot Soyuz original FG L M U U2 Soyuz/Vostok Sputnik Voskhod Vostok L K 2 2M R-29 Shtil' Volna^† Saturn I IB V Scout SLV Space Shuttle SPARK^† Sparta SS-520 Start-1 Thor Able Ablestar Agena Burner Delta DSV-2U Thorad-Agena Titan II GLV IIIA IIIB IIIC IIID IIIE 34D 23G CT-3 IV Tsyklon original 2 3 Universal Rocket UR-500 Proton Proton-K Rokot Strela Vanguard VLS-1^† Zenit 2 2M
Classes	Sounding rocket Small-lift launch vehicle Medium-lift launch vehicle Heavy-lift launch vehicle Super heavy-lift launch vehicle
This Template lists historical, current, and future space rockets that at least once attempted (but not necessarily succeeded in) an orbital launch or that are planned to attempt such a launch in the future Symbol ^† indicates historical or current rockets that attempted orbital launches but did not ever succeed (never did or has performed a successful orbital launch)

Orbital launch systems developed in the United States
Active	Antares 230+ Atlas V Delta IV Heavy Falcon 9 Block 5 Falcon Heavy LauncherOne Minotaur I IV V C Pegasus Rocket 3
In development	Firefly Alpha Beta New Glenn SLS Starship Terran 1 Vulcan
Retired	Antares 110/120/130/230** Athena I II Atlas B D E/F G H I II III LV-3B SLV-3 Able Agena Centaur Conestoga Delta A B C D E G J L M N 0100 1000 2000 3000 4000 5000 II III IV Falcon 1 Falcon 9 v1.0 v1.1 v1.2 "Full Thrust" H-I* Juno I Juno II N-I* N-II* Pilot Saturn I IB V Scout Space Shuttle SPARK Sparta Thor Able Ablestar Agena Burner Delta DSV-2U Thorad-Agena Titan II GLV IIIA IIIB IIIC IIID IIIE 34D 23G CT-3 IV Vanguard
* - Japanese projects using US rockets or stages ** - uses Russian engines