Encyclopedia Astronautica
Delta D



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Delta D no. 30
Delta D no. 30 - COSPAR 1965-028
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Delta D
Credit: © Mark Wade
American orbital launch vehicle. Four stage vehicle consisting of 3 x Castor + 1 x Thor DSV-2C + 1 x Delta D + 1 x Altair 2

LEO Payload: 450 kg (990 lb). Payload: 104 kg (229 lb) to a GTO in 1985 dollars. Flyaway Unit Cost $: 12.720 million.

Stage Data - Delta D

  • Stage 0. 3 x Castor 1. Gross Mass: 3,852 kg (8,492 lb). Empty Mass: 535 kg (1,179 lb). Thrust (vac): 286.001 kN (64,296 lbf). Isp: 247 sec. Burn time: 27 sec. Isp(sl): 232 sec. Diameter: 0.79 m (2.59 ft). Span: 0.79 m (2.59 ft). Length: 5.92 m (19.42 ft). Propellants: Solid. No Engines: 1. Engine: M33-20-4. Status: Out of Production.
  • Stage 1. 1 x Delta Thor TA. Gross Mass: 49,442 kg (109,000 lb). Empty Mass: 3,175 kg (6,999 lb). Thrust (vac): 866.710 kN (194,844 lbf). Isp: 290 sec. Burn time: 150 sec. Isp(sl): 256 sec. Diameter: 2.44 m (8.00 ft). Span: 2.44 m (8.00 ft). Length: 18.41 m (60.40 ft). Propellants: Lox/Kerosene. No Engines: 1. Engine: MB-3-3. Other designations: Thrust Augmented Thor. Status: Out of Production.
  • Stage 2. 1 x Delta D. Gross Mass: 2,693 kg (5,937 lb). Empty Mass: 545 kg (1,201 lb). Thrust (vac): 33.695 kN (7,575 lbf). Isp: 278 sec. Burn time: 170 sec. Isp(sl): 0.0000 sec. Diameter: 0.84 m (2.75 ft). Span: 0.84 m (2.75 ft). Length: 5.58 m (18.30 ft). Propellants: Nitric acid/UDMH. No Engines: 1. Engine: AJ10-118D. Status: Out of Production.
  • Stage 3. 1 x Altair 2. Gross Mass: 275 kg (606 lb). Empty Mass: 37 kg (81 lb). Thrust (vac): 22.241 kN (5,000 lbf). Isp: 266 sec. Burn time: 28 sec. Isp(sl): 242 sec. Diameter: 0.64 m (2.09 ft). Span: 0.64 m (2.09 ft). Length: 2.53 m (8.30 ft). Propellants: Solid. No Engines: 1. Engine: X-258. Status: Out of Production.

AKA: Thor Delta D; Thrust Augmented Thor.
Status: Retired 1965.
Gross mass: 63,966 kg (141,020 lb).
Payload: 450 kg (990 lb).
Height: 32.00 m (104.00 ft).
Diameter: 2.44 m (8.00 ft).
Thrust: 1,571.00 kN (353,174 lbf).
Apogee: 40,000 km (24,000 mi).
First Launch: 1964.08.19.
Last Launch: 1965.04.06.
Number: 2 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • Syncom American communications technology satellite. 3 launches, 1963.02.14 (Syncom I; Syncom 1) to 1964.08.19 (Syncom 3). Experimental telecommunications satellite. More...
  • Intelsat 1 American communications satellite. One launch, 1965.04.06. Intelsat 1, also called Early Bird, was the world's first commercial communications satellite. It provided the first scheduled transoceanic TV service and was operational for 3.5 years. More...

Associated Engines
  • AJ10-118D Aerojet Nitric acid/UDMH rocket engine. 33.7 kN. Isp=278s. Used on Delta B, Delta C, Delta D upper stages. First flight 1962. More...
  • M33-20-4 Thiokol solid rocket engine. 286 kN. Isp=247s. Used as apogee kick motor on Delta D, LT Thor Agena D, Scout X-1, Scout X-2, Scout X-3, Scout X-4, TA Thor Agena B, TA Thor Agena D. First flight 1960. More...
  • MB-3-3 Rocketdyne Lox/Kerosene rocket engine. 866.7 kN. Out of Production. License built in Japan for H-1. Isp=290s. First flight 1964. More...
  • X-258 Thiokol solid rocket engine. 22.2 kN. Isp=266s. Kick stage motor for Delta D, Scout A, Scout X-4. First flight 1963. More...

See also
  • Delta The Delta launch vehicle was America's longest-lived, most reliable, and lowest-cost space launch vehicle. Development began in 1955 and it continued in service in the 21st Century despite numerous candidate replacements. More...

Associated Manufacturers and Agencies
  • Douglas American manufacturer of rockets, spacecraft, and rocket engines. Boeing Huntington Beach, Huntington Beach, CA, USA. More...

Associated Programs
  • Intelsat Intelsat operated the world's first commercial communications satellite. It has provided the scheduled transoceanic television and voice and data communications service ever since. More...

Associated Launch Sites
  • Cape Canaveral America's largest launch center, used for all manned launches. Today only six of the 40 launch complexes built here remain in use. Located at or near Cape Canaveral are the Kennedy Space Center on Merritt Island, used by NASA for Saturn V and Space Shuttle launches; Patrick AFB on Cape Canaveral itself, operated the US Department of Defense and handling most other launches; the commercial Spaceport Florida; the air-launched launch vehicle and missile Drop Zone off Mayport, Florida, located at 29.00 N 79.00 W, and an offshore submarine-launched ballistic missile launch area. All of these take advantage of the extensive down-range tracking facilities that once extended from the Cape, through the Caribbean, South Atlantic, and to South Africa and the Indian Ocean. More...
  • Cape Canaveral LC17A Delta launch complex. Part of a dual launch pad complex built for the Thor ballistic missile program in 1956. Pad 17A supported Thor, Delta, and Delta II launches into the 21st Century. More...

Associated Stages
  • Altair 2 Solid propellant rocket stage. Loaded/empty mass 275/37 kg. Thrust 22.24 kN. Vacuum specific impulse 266 seconds. More...
  • Castor 1 Solid propellant rocket stage. Loaded/empty mass 3,852/535 kg. Thrust 286.00 kN. Vacuum specific impulse 247 seconds. More...
  • Delta Thor TA Lox/Kerosene propellant rocket stage. Loaded/empty mass 49,442/3,175 kg. Thrust 866.71 kN. Vacuum specific impulse 290 seconds. More...
  • Delta D Nitric acid/UDMH propellant rocket stage. Loaded/empty mass 2,693/545 kg. Thrust 33.70 kN. Vacuum specific impulse 278 seconds. More...

Delta D Chronology


1964 August 19 - . 12:15 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17A. LV Family: Delta. Launch Vehicle: Delta D. LV Configuration: Thor Delta D 417/D25.
  • Syncom 3 - . Payload: Syncom C. Mass: 39 kg (85 lb). Nation: USA. Agency: NASA Greenbelt. Class: Technology. Type: Communications technology satellite. Spacecraft: Syncom. Completed Operations Date: 1974-12-29 . USAF Sat Cat: 858 . COSPAR: 1964-047A. Apogee: 35,792 km (22,240 mi). Perigee: 35,784 km (22,235 mi). Inclination: 0.1000 deg. Period: 1,436.20 min. Experimental commsat; carried Star Flash experiment. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit at 64 deg W in 1964; 180 deg E in 1964; 25 deg W in 1965; 165 deg E in 1966-1969. Last known longitude (6 December 1974) 6.08 deg W drifting at 0.188 deg W per day.

1965 April 6 - . 23:47 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17A. LV Family: Delta. Launch Vehicle: Delta D. LV Configuration: Thor Delta D 426/D30.
  • Intelsat 1 F-1 - . Payload: Early Bird. Mass: 39 kg (85 lb). Nation: International. Agency: INTELSAT. Program: Intelsat. Class: Communications. Type: Civilian communications satellite. Spacecraft: Intelsat 1. Completed Operations Date: 1971-01-01 . USAF Sat Cat: 1317 . COSPAR: 1965-028A. Apogee: 35,819 km (22,256 mi). Perigee: 35,746 km (22,211 mi). Inclination: 11.7000 deg. Period: 1,435.90 min. Over Atlantic. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit at 28 deg W in 1965; 38 deg W in 1965-1966. As of 27 July 2001 located at 92.54 deg W drifting at 0.324 deg W per day. As of 2007 Jan 13 located at 47.74W drifting at 0.017E degrees per day.

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