Delta A

	Delta A launching Explorer 14
Has use	Expendable launch system
Country of origin	United States
Launch history
Status	Retired
Launch sites	Cape Canaveral LC-17
Total launches	2
Success(es)	2
First flight	2 October 1962
Last flight	27 October 1962

The Delta A, or Thor-Delta A was an American expendable launch system used to launch two Explorer spacecraft in October 1962. A derivative of the Thor-Delta, it was a member of the Delta family of launch vehicles. The Thor-Delta itself was a Thor booster with an Able second stage and Altair third stage.^[1]^[2]

The first stage was a Thor missile in the DM-21 configuration, and the second stage was the Delta-A, an uprated version of the original . An Altair solid rocket motor was used as a third stage. Both launches occurred from Cape Canaveral Air Force Station (CCAFS) Launch Complex 17B, and were successful. The first launched Explorer 14, and the second Explorer 15.

References[]

^ Wade, Mark. "Delta". Encyclopedia Astronautica. Archived from the original on 24 July 2008. Retrieved 9 February 2009.
^ Krebs, Gunter. "Thor family". Gunter's Space Page. Retrieved 9 February 2009.

[1] Wade, Mark. "Delta". Encyclopedia Astronautica. Archived from the original on 24 July 2008. Retrieved 9 February 2009.

[2] Krebs, Gunter. "Thor family". Gunter's Space Page. Retrieved 9 February 2009.

[1]

[2]

v t 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 Firefly Alpha^† 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 Nuri^† OS-M1^† Pegasus XL Proton-M PSLV Qased Rocket 3 Shavit 2 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 Beta H3 Hyperbola-2 Irtysh Kuaizhou 21 31 Long March 921 rocket 9 Miura 5 Neutron New Glenn New Line 1 OS-M 2 4 Orbex Prime Red Dwarf SLS Block 1 Block 1B Block 2 Soyuz-7 SSLV Starship Terran 1 R Vega C E Vulcan Zero Zhuque-2 Zuljanah
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^† Safir 1 1A 1B Saturn I IB V Scout Shavit original Shavit 1 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 past or current rockets that attempted orbital launches but never succeeded (never did or has yet to perform a successful orbital launch)

v t Orbital launch systems developed in the United States
Active	Antares 230+ Atlas V Delta IV Heavy Falcon 9 Block 5 Falcon Heavy Firefly Alpha LauncherOne Minotaur I IV V C Pegasus XL Astra Rocket 3
In development	Firefly Beta New Glenn Red Dwarf RS1 SLS Block 1 Block 1B Block 2 Starship Terran 1 R 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