KerbalX

Details

• Type: VAB
• Class: satellite
• Part Count: 23
• Mods: 3
• KSP: 1.12.5

Mods

• Bluedog DB
• Squad (stock)
• TweakableEverything

The Thor-Delta rocket was spun off into the new Delta rocket family which still remained a combination of the Thor rocket in DM-21 configuration and essentially an upgraded Able stage and, for some launches, an Altair rocket. While the Delta A made some modifications to the Delta stage it was the Delta B which introduced the new Delta B upper stage complete with a larger fuel tank and solid state guidance system. While the Delta A had some successful launches the Delta B established the new Delta program as fully operational. The program would continue with differences and upgrades to all three stages and become America’s second most frequently used launch vehicle up and through 1978.

The lower stage remained a Thor rocket in DM-21 configuration although the engine can received an upgrade with Delta A which was retained for the Delta B and would continue to be upgraded through newer Delta models throughout the 1970s and 1980s. The Delta B essentially still operated like its Able ancestor but with additional upgrades from the original Delta rocket that allowed for greater payloads to Medium Earth Orbit (MEO).

The Altair was slightly upgraded for the Delta A to handle the additional payload but was essentially the same X-248 that had been used in the original Thor-Delta and Delta rockets, it was still used for the final orbital burn for payloads meant for MEO and HEO.

The first payload carried by the Delta B was the Relay 1 satellite which was a communications satellite with a secondary mission of mapping out the radiation belts. It was the first satellite used to transmit an American broadcast to Japan and was used to broadcast footage of JFK’s assassination. It was also used to broadcast parts of the 1967 Tokyo Olympics and first time that two separate satellites were used for a broadcast – the other being Syncom 1.

The Fenris is an approximation for the Thor rocket and is just a simple one-stage liquid-fueled rocket which handles much of the initial ascent and will probably exhaust itself upon reaching a projected apogee somewhere in the lower MKO (Medium Kerbin Orbit). The Daleth B is an approximation of the Delta B and is meant to consider the ascent to your desired apogee.

The Staara-20 configured as a X-248 is an approximation of the Altair rocket and is meant to complete your orbit either in MKO or HKO. It can be adjusted based on your desired perigee but should stabilize any chosen orbit.

Built in the VAB in KSP version 1.12.5.