Thor-Delta
Template:Short description Template:Use American English Script error: No such module "Unsubst". Template:Infobox Rocket
The Thor-Delta, also known as Delta DM-19 or just Delta was an early American expendable launch system used for 12 orbital launches in the early 1960s. A derivative of the Thor-Able, it was a member of the Thor family of rockets, and the first member of the Delta family.[1]
The first stage was a Thor missile in the DM-19 configuration (DM-18A / MB-3-I engine). The second stage was the Delta (AJ-10-142 engine), which had been derived from the earlier Able stage. An Altair solid rocket motor (X-248A-7) was used as a third stage.[2][3]
The basic design of the original Vanguard upper stages, featuring a pressure-fed nitric acid/UDMH, regeneratively cooled engine, was kept in place, but with an improved AJ10-118 engine. More significantly, the Delta stage featured cold gas attitude control jets allowing it to be stabilized in orbit for restart and more precise burns.
The Thor-Delta was the first rocket to use the combination of a Thor missile and a Delta upper stage. This configuration was reused for many later rockets, and a derivative, the Delta II, remained in service until 2018.
Thor-Delta launches
The Thor-Delta launched a number of significant payloads, including the first communications satellite, Echo 1A; the first British satellite, Ariel 1; and the first active direct-relay communications satellite, Telstar 1. All 12 launches occurred from Cape Canaveral Air Force Station Launch Complex 17. The launch of Telstar 1 used pad B, while all other launches were from pad A. All launches were successful except the maiden flight, which failed to place Echo 1 into orbit due to a problem with the second stage.[3]
Launch list
Script error: No such module "Labelled list hatnote".Template:Transcluded section {{#section-h:List of Delta DM-19 launches|Launch history}}
Gallery
-
Thor 245 Delta 3 launching TIROS-2
-
Thor 286 Delta 5 launching TIROS-3
-
Thor 295 Delta 4 launching Explorer 10
-
Thor 316 Delta 11 launching Telstar 1
-
Thor 317 Delta 7 launching TIROS-4
-
Thor 320 Delta 9 launching Ariel 1
.gif){kind=link}
-repair.jpg){kind=link}
.jpg){kind=link}
See also
Script error: No such module "Portal".
References
<templatestyles src="Reflist/styles.css" />
Script error: No such module "Check for unknown parameters".
Template:Expendable launch systems Script error: No such module "Navbox". Script error: No such module "Navbox".