Encyclopedia Astronautica
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.

Gross mass: 6.50 kg (14.30 lb).
First Launch: 1960.12.04.
Last Launch: 1961.02.16.
Number: 2 .

More... - Chronology...


Associated Countries
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 Launch Vehicles
  • Scout American all-solid orbital launch vehicle. 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...
  • Scout X-1 American all-solid orbital launch vehicle. Four stage vehicle consisting of 1 x Algol 1B + 1 x Castor + 1 x Antares + 1 x Altair More...

Associated Manufacturers and Agencies
  • USAF American agency overseeing development of rockets and spacecraft. United States Air Force, 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...

Bibliography
  • McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: here.
  • JPL Mission and Spacecraft Library, Jet Propulsion Laboratory, 1997. Web Address when accessed: here.
  • Bramscher, Robert G, "A Survey of Launch Vehicle Failures", Spaceflight, 1980, Volume 22, page 351.
  • NASA Report, Temperature Control of the Explorer IX Satellite , Web Address when accessed: here.
  • NASA Report, Determination of Mean Atmospheric Densities from the Explorer IX Satellite, Web Address when accessed: here.

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...

S-56 Chronology


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). .

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