CobaltWolf
commented
4 years ago Upper stages:
- Able / Delta (Thor-Able/Delta/Delta A) = AJ10-37 Able Engine (Lower Performance Switch), Thor Able Guidance Unit, 0.625m Fairing Base. Technically this is Delta upper stage cos it has RCS.
- Delta B (Delta B/C/C1/D) = AJ10-118D Able Engine (Higher Performance Switch), Stretched Tank, Thor Able Guidance Unit, 0.625m Fairing Base
- Able-Star (Thor Able-Star) = AJ10-104 Ablestar Engine (Lower Performance Switch), Ablestar Tank, 0.9375m Fairing Base (basically a fat Able)
- Delta E (Delta E-N) = AJ10-118E Ablestar Engine (Higher Performance Switch), Delta E TAID Tank, 0.9375m Fairing Base
- Delta F (300/900/1000 series) = AJ10-118F, Delta E TAID Tank, 0.9375m Fairing Base
- Delta P (191x/2x1x/391x) = TR-201 Engine, Delta P Tank, Delta P Fairing, Delta K Avionics Block
- Delta K (3-7k series) = AJ10-118K Engine, Delta K Tank, Delta P Fairing, Delta K Avionics Block
- HOSS = RL10-A Engine, HOSS Engine Mount, HOSS Tank, 1.5m Fairing Base
- Agena A (Thor-Agena A)
- Agena B (Thor-Agena B)
- Agena D (Thor-Agena D; TAT Agena, Thorad-Agena D)
Agena D HDA 8096B 8096C
http://www.b14643.de/Spacerockets_2/United_States_4/Agena/index.htm
friznit
Thor-Able. Thor-Delta is a similar build except the upper stage uses the longer Thor Able II 120 Liquid Fuel Tank and the Thor Able Interstage part switch is set to Delta.
Morphisor244
zorg2044
JoeSheridan2
OrbitalManeuvers
Thor
Derived from the PGM-17 Thor intermediate-range ballistic missile, the Thor (BDB Fenris) rocket was the first in a family of space launch vehicles that evolved through four major iterations. Thor-Delta (BDB Daleth) was so-named because it was the fourth Thor-based space launch vehicle after Thor Able, Thor Able-Star, and Thor Agena and eventually the whole rocket came to be known as just Delta. The last derivative of Thor was finally retired in 2018.
There are a huge number of variants as the rocket is continuously upgraded over time with stretched fuel tanks, new engines, upper stages and solid rocket boosters. Most parts have Variant Part Switches in the Part Action Window and the correct variant to select is indicated in parentheses in the build guides.
Fuel Tanks
Structural Adapters/Interstages
Thor
The fuel volume of the Fenris-Alpha fuel tank should be set to "Able" or "Delta" respectively. The optional "Stock" setting matches standard stock fuel levels for this size of tank but may imbalance rocket performance.
Tags: Fenris
Thor-Able rocket. Thor-Delta (which came to be known as simply Delta) is a similar build except the upper stage uses the longer Fenris Alpha II 120 Liquid Fuel Tank and Fenris Alpha Interstage with the part switch set to 'Delta'.
Delta
Originally called Thor-Delta because the upper stage was the fourth iteration after Able, Able-Star and Agena, the rocket soon became known simply as Delta to distinguish it from the USAF programme that continued to develop Thor.
Long Tank Thor
While the USAF continued development on Thor Advanced (Thorad), NASA benefited by using the new technology in their parallel Delta programme. Delta L, M & N all use the Delta E upper stage and either Star-20, Star-37B or no SRM respectively. The thrust augmented Delta M6 and N6 dubbed "Super Six" adds six Castor 2 SRBs. Although the naming convention changed from lettering to a numerical designation, the 100-series are essentially the same rocket with an upgraded Delta F upper stage. Concept studies also looked at using a cryogenic Hydrogen Oxygen Secondary Stage (HOSS), a precursor to the Centaur.
Delta 904
Extended Long Tank Thor
Delta 1000 series combines an extended first stage tank with a new Delta P second stage and an 8-foot diameter payload fairing giving it the nickname "Straight-Eight." Later variants of ELTT introduce the RS27 engine, Delta K second stage and upgraded Castor IV Solid Rocket Boosters. Refer to the Delta numbering scheme for details of the naming convention. The 2000 series onwards started to introduce the distinctive blue colour to the rocket.
Delta 3920 PAM-D
Delta II (Extra Extended Long Tank Thor)
Delta II stretches the main tank even further with an uprated RS-27A engine. The 7000 series employs the more powerful GEM-40 boosters or GEM-46 for the 'Heavy' variant.
Delta III
Delta III accommodates bigger and heavier satellites by replacing both lower-performance upper stages with a single cryogenic secondary stage. The first stage upper tank is widened and shortened to keep the overall height down.
Delta IV
Delta IV uses a Delta Cryogenic Secondary Stage on top of a widened 5m (3.125m KSP) Common Booster Core (CBC) powered by an RS-68 cryogenic engine. The Delta IV Small proposition would have used a single CBC, a Delta II second stage and an optional Star 48B third stage inside a Delta II payload fairing. Delta IV Medium (technically Delta 9040) has a modified Delta III second stage topped by a 4m or 5m fairing and adds 2, 4 or 8x GEM-60 SRBs on the Delta IV Medium+. Delta IV Heavy (Delta 9250H) uses 2 strap on CBC's in place of the SRB's.
Place the radial decouplers in 2x symmetry then add the CBC's individually so the raceways and pipes all face the same way. Switch on the side node on the Upper Liquid Fuel Tank to attach it to the decoupler.
Delta IV M, Delta IV M+ (5,2) & Delta IV H