JUICE’s 52-foot-long antenna is now at full length, but it required some serious coaxing—and a big jolt—to get the job done.
Flight controllers devised several strategies to dislodge the stuck antenna, including a kind of shake ‘n bake method, in which the probe’s thrusters provided the shaking and the Sun’s rays provided the baking. This procedure was done over the course of several days, as controllers spun JUICE around to periodically move the mount and radar out from the cold shadows and into the light.
This resulted in partial movement, but the antenna largely stayed put.with controllers firing a “non-explosive actuator” affixed to the jammed bracket. “This delivered a shock that moved the pin by a matter of millimetres and allowed the antenna to unfold,” ESA explained in a May 12the entire apparatusAnd thank goodness for that. Hopefully we won’t hear much more from JUICE in the coming years as the probe winds its way to Jupiter.
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