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Normal safe mode operation can sometimes be overridden. A spacecraft's ability to enter safe mode may be suppressed during crucial spacecraft operations (such as the orbit insertion maneuver of the Cassini spacecraft at Saturn), during which – if a critical failure were to occur – most, if not all, of the mission objectives would be lost anyway. [3]
Operation Burnt Frost was a military operation to intercept and destroy non-functioning U.S. National Reconnaissance Office (NRO) satellite USA-193. [1] The mission was described by the Missile Defense Agency as a "mission of safeguarding human life against the uncontrolled re-entry of a 5,000-pound satellite containing over 1,000 pounds of hazardous hydrazine propellant". [2]
The 6593d Test Squadron's mission was to develop and maintain a capability of effect the aerial recovery of a capsule ejected from an orbiting satellite. [ 1 ] The work performed by the squadron was classified until 1995, as its primary mission was directed at recovering film imaged by the Corona strategic reconnaissance satellites produced and ...
Schematic of the Kosmos-954 on-board reactor. Kosmos 954 (Russian: Космос 954) was a reconnaissance satellite launched by the Soviet Union in 1977. A malfunction prevented safe separation of its onboard nuclear reactor; when the satellite reentered the Earth's atmosphere the following year, it scattered radioactive debris over northern Canada, some of the debris landing in the Great ...
The recovery of the Discoverer 14 return capsule (typical for the CORONA series) A KH-4B CORONA satellite Discoverer 14 launch 1960, Thor Agena "A" launch vehicle. The CORONA [1] program was a series of American strategic reconnaissance satellites produced and operated by the Central Intelligence Agency (CIA) Directorate of Science & Technology with substantial assistance from the U.S. Air Force.
On 27 December 2010, Intelsat reported that the satellite had rebooted as per design and the command unit was responding to commands again. In addition, the satellite had been secured in safe mode and the potential for interference issues from Galaxy 15 had ceased. [1] [2] Intelsat repositioned Galaxy 15 back to its original location on April 4 ...
A Selective Availability Anti-spoofing Module (SAASM) is used by military Global Positioning System receivers to allow decryption of precision GPS observations, while the accuracy of civilian GPS receivers may be reduced by the United States military through Selective Availability (SA) and anti-spoofing (AS). [1]
A KH-9 HEXAGON main features. KH-9 (BYEMAN codename HEXAGON), commonly known as Big Bird or KeyHole-9, [1] was a series of photographic reconnaissance satellites launched by the United States between 1971 and 1986.