Encyclopedia Astronautica
Scout X-1



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Scout X1
Scout X1 - COSPAR 1961-Delta
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Scout
Credit: © Mark Wade
American all-solid orbital launch vehicle. Four stage vehicle consisting of 1 x Algol 1B + 1 x Castor + 1 x Antares + 1 x Altair

LEO Payload: 59 kg (130 lb) to a 185 km orbit. Failures: 4. First Fail Date: 1960-07-02. Last Fail Date: 1961-08-25 in 1985 dollars. Flyaway Unit Cost $: 8.910 million.

Stage Data - Scout X-1

  • Stage 1. 1 x Algol 1. Gross Mass: 10,705 kg (23,600 lb). Empty Mass: 1,900 kg (4,100 lb). Thrust (vac): 470.934 kN (105,870 lbf). Isp: 236 sec. Burn time: 40 sec. Isp(sl): 214 sec. Diameter: 1.01 m (3.31 ft). Span: 1.01 m (3.31 ft). Length: 9.12 m (29.92 ft). Propellants: Solid. No Engines: 1. Engine: Algol 1. Other designations: Senior. Status: Out of Production. This rocket started as a Polaris test motor with a 40 inch diameter, which at the time was the largest solid motor ever tested. It had a nominal performance rating of 45 seconds duration and 45,000 kgf thrust. Variations included Algol I, I-D, II, II-A, II-B and possibly others. Another popular rating was 40KS-115,000 (52,000 kgf for 40 seconds), also known as Senior.
  • Stage 2. 1 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 3. 1 x Antares 1A. Gross Mass: 1,225 kg (2,700 lb). Empty Mass: 294 kg (648 lb). Thrust (vac): 60.497 kN (13,600 lbf). Isp: 256 sec. Burn time: 39 sec. Isp(sl): 233 sec. Diameter: 0.78 m (2.55 ft). Span: 0.78 m (2.55 ft). Length: 3.38 m (11.08 ft). Propellants: Solid. No Engines: 1. Engine: X-254. Status: Out of Production.
  • Stage 4. 1 x Altair 1A. Gross Mass: 390 kg (850 lb). Empty Mass: 181 kg (399 lb). Thrust (vac): 13.788 kN (3,100 lbf). Isp: 255 sec. Burn time: 40 sec. Isp(sl): 232 sec. Diameter: 0.46 m (1.50 ft). Span: 0.46 m (1.50 ft). Length: 2.50 m (8.20 ft). Propellants: Solid. No Engines: 1. Engine: X-248A. Status: Out of Production.

Gross mass: 16,240 kg (35,800 lb).
Payload: 59 kg (130 lb).
Height: 25.00 m (82.00 ft).
Diameter: 1.01 m (3.31 ft).
Thrust: 427.10 kN (96,016 lbf).
Apogee: 185 km (114 mi).
First Launch: 1960.07.02.
Last Launch: 1961.10.19.
Number: 7 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • S-56 American earth atmosphere satellite. 2 launches, 1960.12.04 (Explorer (9) S 56) to 1961.02.16 (Explorer 9). 12 foot diameter. balloon; atmospheric density studies. More...
  • S-55 American earth micrometeoroid satellite. 4 launches, 1961.06.30 (Explorer (13) S 55) to 1964.11.06 (Explorer 23). Micrometeoroid research. More...

Associated Engines
  • Algol 1 Aerojet solid rocket engine. 470.9 kN. Isp=236s. This rocket started as a Polaris test motor with a 40 inch diameter, which at the time was the largest solid motor ever tested. First flight 1960. 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...
  • X-248A Thiokol solid rocket engine. 13.8 kN. Isp=255s. Used on Scout X-1, Scout X-2, Scout X-3. First flight 1960. More...
  • X-254 Thiokol solid rocket engine. 60.5 kN. Isp=256s. Used on Blue Scout 1, Blue Scout 2, Blue Scout Junior, Scout X-1. First flight 1960. More...

See also
  • Scout Solid-fuel, light payload, lower-cost launch vehicle developed by the Air Force and NASA in the late 1950's and used in a variety of configurations over thirty years. Launched from Cape Canaveral, Vandenberg, Wallops Island, and from Italy's equatorial San Marco platform off Kenya. Italy studied but did not develop subsequent upgraded versions. More...

Associated Manufacturers and Agencies
  • Vought American manufacturer of rockets and spacecraft. Vought, USA. More...

Associated Programs
  • Explorer Series of satellites launched by Jet Propulsion Laboratory for the exploration of the space environment (micrometeoroids, charged particles, radiation, etc) from both earth orbital and heliocentric orbital locations. More...

Associated Launch Sites
  • Wallops Island Small NASA launch site for sounding rocket launches and occasional Scout launches to orbit. Air launches are conducted from the Drop Zone Wallops Island, 37.00 N 72.0 W. With the last orbital launch in 1985 and the decline in sounding rocket launches, Wallops fell into near-disuse as a launch center. Its fortunes revised with the establishment of Mid-Atlantic Regional Spaceport in 2005 and orbital launches resumed in 2010. More...

Associated Stages
  • Algol 1 Solid propellant rocket stage. Loaded/empty mass 10,705/1,900 kg. Thrust 470.93 kN. Vacuum specific impulse 236 seconds. This rocket started as a Polaris test motor with a 40 inch diameter, which at the time was the largest solid motor ever tested. It had a nominal performance rating of 45 seconds duration and 45,000 kgf thrust. Variations included Algol I, I-D, II, II-A, II-B and possibly others. Another popular rating was 40KS-115,000 (52,000 kgf for 40 seconds), also known as Senior. More...
  • Altair 1 Solid propellant rocket stage. Loaded/empty mass 238/30 kg. Thrust 12.45 kN. Vacuum specific impulse 256 seconds. More...
  • Antares 1A Solid propellant rocket stage. Loaded/empty mass 1,225/294 kg. Thrust 60.50 kN. Vacuum specific impulse 256 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...

Scout X-1 Chronology


1960 July 2 - . 00:04 GMT - . Launch Site: Wallops Island. Launch Complex: Wallops Island LA3. LV Family: Scout. Launch Vehicle: Scout X-1. LV Configuration: Scout X-1 ST-1. FAILURE: Failure.
  • Test mission - . Nation: USA. Agency: NASA. Apogee: 1,380 km (850 mi).

1960 October 4 - . 15:23 GMT - . Launch Site: Wallops Island. Launch Complex: Wallops Island LA3. LV Family: Scout. Launch Vehicle: Scout X-1. LV Configuration: Scout X-1 ST-2.
  • Radiation Probe Plasma mission - . Nation: USA. Agency: NASA. Apogee: 5,600 km (3,400 mi).

1960 December 4 - . 21:14 GMT - . Launch Site: Wallops Island. Launch Complex: Wallops Island LA3. LV Family: Scout. Launch Vehicle: Scout X-1. LV Configuration: Scout X-1 ST-3. FAILURE: Second stage malfunction.. Failed Stage: 2.
  • Explorer (9) S 56 - . Payload: S-56. Mass: 6.00 kg (13.20 lb). Nation: USA. Agency: NASA. Program: Explorer. Class: Earth. Type: Atmosphere satellite. Spacecraft: S-56. Decay Date: 1960-12-04 . COSPAR: F601204A.

1961 February 16 - . 13:05 GMT - . Launch Site: Wallops Island. Launch Complex: Wallops Island LA3. LV Family: Scout. Launch Vehicle: Scout X-1. LV Configuration: Scout X-1 ST-4.
  • Explorer 9 - . Payload: S-56A. Mass: 7.00 kg (15.40 lb). Nation: USA. Agency: USAF. Program: Explorer. Class: Earth. Type: Atmosphere satellite. Spacecraft: S-56. Decay Date: 1964-04-09 . USAF Sat Cat: 81 . COSPAR: 1961-Delta-1. Apogee: 2,433 km (1,511 mi). Perigee: 757 km (470 mi). Inclination: 38.8000 deg. Period: 118.00 min. Summary: 12 foot dia. balloon; atmospheric density studies. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B). .

1961 June 30 - . 17:09 GMT - . Launch Site: Wallops Island. Launch Complex: Wallops Island LA3. LV Family: Scout. Launch Vehicle: Scout X-1. LV Configuration: Scout X-1 ST-5. FAILURE: Third stage did not ignite, and the vehicle was destroyed.. Failed Stage: 3.
  • Explorer (13) S 55 - . Payload: S-55. Mass: 84 kg (185 lb). Nation: USA. Agency: NASA. Program: Explorer. Class: Earth. Type: Micrometeoroid satellite. Spacecraft: S-55. Decay Date: 1961-06-30 . COSPAR: F610630A. Apogee: 172 km (106 mi). Summary: Micrometeorite counter satellite (S-55)..

1961 August 25 - . 18:29 GMT - . Launch Site: Wallops Island. Launch Complex: Wallops Island LA3. LV Family: Scout. Launch Vehicle: Scout X-1. LV Configuration: Scout X-1 ST-6. FAILURE: Partial Failure.. Failed Stage: 4.
  • Explorer 13 - . Payload: S-55A. Mass: 86 kg (189 lb). Nation: USA. Agency: NASA. Program: Explorer. Class: Earth. Type: Micrometeoroid satellite. Spacecraft: S-55. Decay Date: 1961-08-28 . USAF Sat Cat: 180 . COSPAR: 1961-Chi-1. Apogee: 1,164 km (723 mi). Perigee: 125 km (77 mi). Inclination: 37.7000 deg. Period: 97.50 min. Summary: Useless orbit; micrometeoroid research. Partial Failure..

1961 October 19 - . 17:38 GMT - . Launch Site: Wallops Island. Launch Complex: Wallops Island LA3. LV Family: Scout. Launch Vehicle: Scout X-1. LV Configuration: Scout X-1 ST-7.
  • P-21 Plasma / aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 6,855 km (4,259 mi).

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