Solid-State Imager (SSI) - visible imaging with 800 x 800 array CCD.
Ultraviolet Spectrometer (UVS) - studied gases. Near-Infrared Mapping Spectrometer (NIMS) - made multispectral images for atmosphere and surface chemical analysis. An 11 meter deployable boom provided mounting for some science instruments. The orbiter was powered by two radioisotope thermal generators (570 W BOL, 485 W EOL). Redundant flight computers with high level of fault protection kept Galileo operating throughout its extended mission. The deployable 4.8 meter wire mesh high gain antenna failed to unfold and could not be used (planned downlink rate >100 kbps). S-band communications were through two omni low gain antennas (40 bps typical). The bipropellant propulsion system (HHM, NTO) from the Federal Republic of Germany used 12 x 10 N thrusters, 1 x 400 N main engine. The despun section provided fixed orientation for remote sensing instruments, star scanner, and gyros. The spinning section (3 rpm) housed fields and particles instruments, antennas, propulsion system, computers, and most other support systems. Problems with the tape recorder on 11 October 1995 also forced workarounds, but Galileo provided years of service in Jupiter orbit. The Galileo probe was released on 12 July 1995 and entered Jupiter's atmosphere on 7 December 1995. Galileo was also the only vehicle in a position to obtain images of the far side of Jupiter when more than 20 fragments of Comet Shoemaker-Levy plunged into Jupiter's atmosphere in July 1994. During its flight to Jupiter, Galileo also performed the first and second asteroid flybys - Gaspra (October 1991) and Ida (August 1993). Heroic efforts by JPL staff to develop workarounds resulted in virtually no loss of science data. This forced use of the low gain antennas at an order-of-magnitude lower than planned data rate. Subsequent attempts to release it also failed. Following deployment of the probe, the spacecraft went into orbit around Jupiter to continue its investigations.Īt the beginning of Galileo's interplanetary cruise, the planned deployment of the high gain antenna failed on 11 April 1991. The spacecraft's primary mission was the deployment of an atmospheric probe into Jupiter's atmosphere. The mission was named in honor of Galileo Galilei, the Italian Renaissance scientist who discovered Jupiter's major moons in 1610. Galileo was designed to perform in-depth studies of Jupiter's atmosphere, satellites, and surrounding magnetosphere. Galileo also performed two asteroid flybys and obtained images of the far side of Jupiter when Comet Shoemaker-Levy impacted in July 1994. #Galileo orbiter software#
Despite the failure, a series of mission extensions and software improvisations resulted in the original science objectives being vastly exceeded. During interplanetary cruise, deployment of Galileo's high gain antenna failed, forcing use of the its low gain antennas at much lower than planned data rates. Jupiter orbiter and probe satellite operated by NASA, USA. The Galileo Jupiter orbiter was designed to perform in-depth studies of the giant planet's atmosphere, satellites, and surrounding magnetosphere. Home - Search - Browse - Alphabetic Index: 0- 1- 2- 3- 4- 5- 6- 7- 8- 9Ī- B- C- D- E- F- G- H- I- J- K- L- M- N- O- P- Q- R- S- T- U- V- W- X- Y- ZĪmerican outer planets probe.
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