Long Tank Thor

Background

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 upper stage.

Tags: Daleth

Variants

Variants	First Stage	Boosters	Second Stage	Third Stage
Thorad-Agena SLV-2G	LR79-NA13	3x Dioscuri 2	Belle Interstage; Belle-D Upper Stage
Delta L	LR79-NA13	3x Dioscuri 2	Daleth E Upper Stage	Staara-20-IIA SRM
Delta M	LR79-NA13	3x Dioscuri 2	Daleth E Upper Stage	Staara-37B (Burner 2)
Delta N	LR79-NA13	3x Dioscuri 2	Daleth E Upper Stage
Delta M6, N6 "Super Six"	LR79-NA13	6x Dioscuri 2	Daleth E Upper Stage
Delta 300/900	LR79-NA13	3/9x Dioscuri 2	Daleth F Upper Stage
Delta M HOSS	LR79-NA13	3x Dioscuri 1 or Algol II + 3/6x Dioscuri 2	Daleth-K Interstage (Short); CUSS Upper Stage

Basic Build Guide

Long Tank Thor uses Fenris tank parts but stretched using the config switches in the Part Action Window.

• Daleth F Upper Stage uses the Daleth-E-210 Fuel Tank and a JA10-118-F10 "Hebel" Engine
• CUSS (HOSS) Upper Stage uses the CUSS-1300 Fuel Tank and an Inon-R-10A "Isor" Engine (Inon-R-10A Config)

From Top to Bottom:

• Fairing Base
• Upper Stage
• Interstage
• Medium 1.25m to 0.9375m Structural Adapter
• Short 1.5m to 1.25m Structural Adapter
• Upper Tank (LT/ELT config)
• Lower Tank (Basic/LT; Ribbed config)
• Engine Fairing
• Verniers x2
• LR79-NA13

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.

Variants

Variants	First Stage	Boosters	Second Stage	Third Stage
Delta 1910 'Straight Eight'	LR79-NA13	9x Dioscuri 2	Daleth P
Delta 2914	RS-27	9x Dioscuri 2	Daleth P	Staara-37D
Delta 3920 PAM-D	RS-27	9x Dioscuri 4	Daleth K	Staara-48B PAM-D
Delta 4000 series	LR79-NA13	Dioscuri 4A	Daleth K	Staara-48B
Delta 5000 series	RS-27	Dioscuri 4A	DalethK

Basic Build Guide

• Daleth P Upper Stage uses the Daleth-P-180 Fuel Tank and a RW-ATR2201 "Lysenko" Engine
• Daleth K Upper Stage uses the Daleth-K-240 Fuel Tank and a JA10-118-K11 "Noshem" Engine

From Top to Bottom:

• Fairing Base
• Upper Stage
• Daleth-K Interstage
• Upper Tank (LT/ELT config)
• Lower Tank (ELT; Ribbed config)
• Engine Fairing
• Verniers x2
• RS-27

Delta 3920 PAM-D