NASA's Juno page says
The Juno spacecraft launched aboard an Atlas V-551 rocket from Cape Canaveral, Fla., on Aug. 5, 2011, and will reach Jupiter in July 2016. The spacecraft will orbit Jupiter 32 times, skimming to within 3,100 miles (5,000 kilometers) above the planet's cloud tops, for approximately one year.
The environment around Jupiter itself is reportedly corrosive thanks to Io. In addition, the craft may suffer mechanical/tidal stresses from Jupiter & her family of moons.
How were Juno's solar arrays tested for mechanical/tidal stresses from Jupiter, and her family of moons?
Will Juno be able to do science if a single array remains functional?
- What is the typical power redundancy built into a spacecraft?