Juno Processing Continues in Florida

Technicians use an overhead crane to lower NASA's Juno spacecraft onto a fueling stand at Astrotech's Hazardous Processing Facility in Titusville, Fla. Technicians use an overhead crane to lower NASA's Juno spacecraft onto a fueling stand at Astrotech's Hazardous Processing Facility in Titusville, Fla. Image credit: NASA/KSC
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July 19, 2011

Processing on NASA's Juno spacecraft continues with the spacecraft being inserted into its payload fairing yesterday, (July 18, 2011). The payload fairing acts as a protective cocoon that will shield Juno from the elements during the first 205 seconds of the spacecraft's ascent to orbit. The encapsulation process is expected to take about four days.

On Friday, July 15, the Juno team used a process called gamma-ray radiography to inspect solder connections leading to a heater element aboard one of Juno's two magnetometers. The results of the inspection indicated there was an ample amount of solder connecting wire leads to the heater, enabling it to operate effectively during its mission.

The Juno spacecraft carries two redundant Flux Gate Magnetometer instruments that will measure Jupiter's powerful magnetic environment. Lab testing of heaters similar to ones on Juno, designed to keep the Flux Gate Magnetometer instruments warm in space, had indicated a small probability that wire connections might not operate as expected. As a precaution, NASA and Juno mission personnel had decided to inspect the Juno heater elements and, if necessary, repair solder joints connecting the heaters' electrical wires to their mounting surfaces to ensure mission success.

"This test gave us confidence that our magnetometer will work as advertised in just about the harshest environment you could find in the solar system," said Scott Bolton, Juno's principal investigator from the Southwest Research Institute in San Antonio.

The launch period for Juno opens Aug. 5 and extends through Aug. 26. For an Aug. 5 liftoff, the launch window opens at 8:34 a.m. PDT (11:34 am EDT) and remains open through 9:43 a.m. PDT (12:43 p.m. EDT).

NASA's Jet Propulsion Laboratory, Pasadena, Calif., manages the Juno mission for the principal investigator, Scott Bolton, of Southwest Research Institute at San Antonio, Texas. Lockheed Martin Space Systems, Denver, is building the spacecraft. The Italian Space Agency in Rome is contributing an infrared spectrometer instrument and a portion of the radio science experiment. JPL is a division of the California Institute of Technology in Pasadena.

More information about Juno is online at http://www.nasa.gov/juno and http://missionjuno.swri.edu.

DC Agle 818-393-9011
Jet Propulsion Laboratory, Pasadena, Calif.
agle@jpl.nasa.gov

George Diller 321-867-2468
Kennedy Space Center, Fla.
george.h.diller@nasa.gov

2011-215



This cosmic pirouette of Earth and our moon was captured by the Juno spacecraft as it flew by Earth on Oct. 9, 2013. NASA's Juno Gives Starship-Like View of Earth Flyby

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Artist's rendering of the Juno spacecraft approaching Earth on Oct. 9, 2013. Juno Status Report

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A computer-generated image depicts NASA's Juno spacecraft. NASA's Juno is Halfway to Jupiter

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