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Thor Delta L
Part of Thor Family
American orbital launch vehicle. Four stage vehicle consisting of 3 x Castor 2 + 1 x LT Thor DSV-2L-1B + 1 x Delta E + 1 x FW4D

AKA: Delta L;Long Tank Thor. Status: Retired 1972. First Launch: 1969-08-27. Last Launch: 1972-01-31. Number: 2 . Payload: 300 kg (660 lb). Thrust: 1,452.90 kN (326,625 lbf). Gross mass: 89,935 kg (198,272 lb). Height: 35.00 m (114.00 ft). Diameter: 2.44 m (8.00 ft). Apogee: 400,000 km (240,000 mi).

LEO Payload: 300 kg (660 lb). Payload: 300 kg (660 lb) to a GTO. Flyaway Unit Cost 1985$: 16.540 million.

Stage Data - Delta L

  • Stage 0. 3 x Castor 2. Gross Mass: 4,424 kg (9,753 lb). Empty Mass: 695 kg (1,532 lb). Thrust (vac): 258.915 kN (58,206 lbf). Isp: 262 sec. Burn time: 37 sec. Isp(sl): 232 sec. Diameter: 0.79 m (2.59 ft). Span: 0.79 m (2.59 ft). Length: 6.04 m (19.81 ft). Propellants: Solid. No Engines: 1. Engine: TX-354-3. Status: In Production.
  • Stage 1. 1 x Delta Thor LT. Gross Mass: 70,354 kg (155,104 lb). Empty Mass: 3,715 kg (8,190 lb). Thrust (vac): 866.710 kN (194,844 lbf). Isp: 290 sec. Burn time: 215 sec. Isp(sl): 256 sec. Diameter: 2.44 m (8.00 ft). Span: 2.44 m (8.00 ft). Length: 21.43 m (70.30 ft). Propellants: Lox/Kerosene. No Engines: 1. Engine: MB-3-3. Other designations: Long Tank Thor. Status: Out of Production.
  • Stage 2. 1 x Delta E. Gross Mass: 6,009 kg (13,247 lb). Empty Mass: 785 kg (1,730 lb). Thrust (vac): 35.098 kN (7,890 lbf). Isp: 278 sec. Burn time: 400 sec. Isp(sl): 0.0000 sec. Diameter: 1.40 m (4.50 ft). Span: 1.40 m (4.50 ft). Length: 6.28 m (20.60 ft). Propellants: Nitric acid/UDMH. No Engines: 1. Engine: AJ10-118E. Status: Out of Production.
  • Stage 3. 1 x FW-4D. Gross Mass: 300 kg (660 lb). Empty Mass: 25 kg (55 lb). Thrust (vac): 24.997 kN (5,620 lbf). Isp: 287 sec. Burn time: 31 sec. Isp(sl): 250 sec. Diameter: 0.50 m (1.64 ft). Span: 0.50 m (1.64 ft). Length: 1.48 m (4.85 ft). Propellants: Solid. No Engines: 1. Engine: FW4-D. Status: Out of Production.



Family: orbital launch vehicle. Country: USA. Engines: AJ10-118E, MB-3-3. Spacecraft: Pioneer 6-7-8-9-E, HEOS, TETR. Projects: Pioneer series. Launch Sites: Cape Canaveral, Vandenberg, Cape Canaveral LC17A, Vandenberg SLC2E. Stages: Altair 3D, Delta Thor LT, Delta E, Castor 2. Agency: Douglas.

1969 August 27 - . 21:59 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17A. LV Family: Thor. Launch Vehicle: Thor Delta L. FAILURE: First stage hydraulics failure. Vehicle destructed at T+383 seconds. Failed Stage: 1.
  • TETR C - . Payload: TETR C. Mass: 20 kg (44 lb). Nation: USA. Agency: NASA. Program: Pioneer. Spacecraft: TETR.

1972 January 31 - . 17:20 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2E. LV Family: Thor. Launch Vehicle: Thor Delta L.
  • HEOS 2 - . Payload: HEOS A2. Mass: 123 kg (271 lb). Nation: Europe. Agency: ESRO. Class: Earth. Type: Magnetosphere satellite. Spacecraft: HEOS. Decay Date: 1974-08-02 . USAF Sat Cat: 5814 . COSPAR: 1972-005A. Apogee: 240,164 km (149,230 mi). Perigee: 405 km (251 mi). Inclination: 89.9000 deg. Period: 7,477.10 min. Highly Eccentric Orbiting Satellite; particles and fields data. Fifth satellite of ESRO. Also registered as US object 1972-05A in A/AC.105/INF.248 with orbit 7835.4 min, 439 x 248160 km x 90.2 deg, category B. .


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