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Image:Explorer20.jpg 200px Explorer XX satellite Category:Spacecraft

... DISCOVERER: THE STORY OF A SATELLITE''' by Chester, M. and S. B. Kramer ''New York, 1960: ... written for the younger reader, the book provides a good text-pictorial account of the Discoverer program, the only one available in the book literature. Extracted from the 1962 Publication ''Annotated ...

Image:Discoverer13.jpg 200px Discoverer XIII satellite being presented to President Eisenhower Category:Spacecraft

Image:Discoverer14.jpg 200px Discoverer XIV satellite Category:Spacecraft

... by visual and photographic means after failure of radio beacon delayed confirmation of orbit. USAF Discoverer XX placed in polar orbit with 300-pound recovery capsule from Vandenberg Air Force Base . NASA ...

... Thor-Able-Star launch vehicle, but satellites did not separate. USAF canceled recovery operations of Discoverer XX capsule due to technical difficulties. NASA awarded contract to G. T. Schjeldahl Co. for nine ...

... by U.S.S.R. a scientific satellite for "continuing the study of space," Cosmos XX was stated to have an apogee of 311 km. (193 mi.) ; perigee of 206 km ...

... low-level cosmic radio noise. The experiment was timed to coincide with passage of EXPLORER XX ''(fixed frequency topside sounder satellite)'', which also was being used to investigate cosmic noise source ... Javelin was sent up through the region of the satellite about 15 min. after EXPLORER XX had passed through the area at about 650-mi. altitude. During the flight 18 min ...

... recently that last year there were 13 consecutive failures of the Atlas. In addition, the Discoverer project took 13 at-tempts to recover its first payload from orbit. Polaris experienced 5 ... flights helped improve later flights. Although I believe Skybolt was dropped for other reasons, Atlas , Discoverer, and Polaris all went on to become vital elements in the defense posture of this ...

... capsule to be recovered after 32 polar orbits and 4 days. Of the 25 previous Discoverers, 17 had gone into orbit and 15 carried recovery capsules, of which 5 had been ...

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