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Juno Mission To Jupiter NASA New Frontiers Program

Juno Mission To Jupiter NASA New Frontiers Program. Atlas V 551 New Horizons. Launch Date: Aug. 5, 11:34 a.m. EDT Launch Period: Aug. 5 – 26 (~60 min window) Launch Vehicle: Atlas V-551 – ULA Denver Launch Site: Cape Canaveral NASA: Jet Propulsion Laboratory

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Juno Mission To Jupiter NASA New Frontiers Program

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  1. Juno Mission To JupiterNASA New Frontiers Program Atlas V 551 New Horizons Launch Date: Aug. 5, 11:34 a.m. EDT Launch Period: Aug. 5 – 26 (~60 min window) Launch Vehicle: Atlas V-551 – ULA Denver Launch Site: Cape Canaveral NASA: Jet Propulsion Laboratory Principal Investigator : Southwest Research Institute Co-Investigator : University of Colorado Spacecraft: Lockheed Martin Denver

  2. Jupiter • 484 million miles from Sun (receives ~4% the solar energy) • 9.9 hour day, Jovian year is ~11.9 Earth years • 318 times as massive as Earth • 1,400 more volume, 88,846 miles in diameter • ¼ as Dense (1.33 times water) • 63 moons + • Centuries old Great Red Spot • Largest planetary magnetic field • Radiates more heat than it receives from the Sun • Atmosphere 90% hydrogen, 10% helium; traces of methane, ammonia, water, ethane, ice • Visited by Pioneers, Voyagers, Cassini, New Horizons • Orbited by Galileo with an atmospheric probe

  3. Trajectory & Science • Five-year cruise to Jupiter, arriving July 2016 • Deep Space Maneuver (DSM): 2, 33 min Engine Burns • Earth Fly-by Gravity Assist • Jupiter polar orbit for about one year • 33 orbits, (11 day period) • Galileo plan was 2 years, lasted 8 years • Mission ends with de-orbit into Jupiter • Same as Galileo (protect Moons) • 9 Experiments, 25 Sensors • Color camera - Junocam • First detailed glimpse of the Jupiter's poles. • 9.3 mile/pixel resolution • Education & Public Outreach

  4. Spacecraft Overview • Spacecraft Mass 7992 pounds, 4 tons • Larger and more propellant than Galileo with its probe • 3 Solar Arrays 8.7 feet x 29.5 feet, total area 650 ft2 • 15 kilowatts at Earth, 450 watts at Jupiter (3-4%) • 50% more efficient then 20 years ago • All previous Jupiter “visits” used Plutonium RTGs • Spin-stabilized 3 rpm, like Pioneer for pointing and control • Keeps pointed towards Sun • Propulsion • Bi-propellant system, 4400 lb, 2 tons • 145 lbf thrust main engine with a protective cover • Titanium “Vault” to protect Electronics from Magnetic field • Weights 157 kg (346 lb) • Shields from electrons and protons • Testing difficult due to vacuum, LN2 temperatures and high energy particles • Exposure • ~100 million Dental X-rays Propulsion System & Ti Vault In Denver Spacecraft Vacuum Test in Denver

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