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Federal Aviation Administration/ Elite Aviation SolutionsBiblio.com

Aviation Instructor's Handbook

National Aeronautics and Space AdministrationBiblio.com

Juno Launch; Press Kit August 2011

201186129Washington DC: National Aeronautics and Space Administration 2011. Xerox-style reproduction. Presumed to be one of only a few copies made for media representatives. Stapled at upper left corner. Very good. 25 1 pages. Illustrations. Contents include Media Services Information; Quick Facts; Jupiter at a Glance; Why Juno; Mission Overview; Mission Phases; Spacecraft; Science Overview; Missions to Jupiter; and Program/Project Management. Juno is a NASA space probe orbiting the planet Jupiter. It was built by Lockheed Martin and is operated by NASA's Jet Propulsion Laboratory. The spacecraft was launched from Cape Canaveral Air Force Station on August 5 2011 UTC as part of the New Frontiers program. Juno entered a polar orbit of Jupiter on July 5 2016 UTC to begin a scientific investigation of the planet. After completing its mission Juno will be intentionally deorbited into Jupiter's atmosphere. Juno's mission is to measure Jupiter's composition gravitational field magnetic field and polar magnetosphere. It will also search for clues about how the planet formed including whether it has a rocky core the amount of water present within the deep atmosphere mass distribution and its deep winds which can reach speeds up to 390 mph. Juno is the second spacecraft to orbit Jupiter after the nuclear powered Galileo orbiter which orbited from 1995 to 2003. Juno is powered by solar panels commonly used by satellites orbiting Earth and working in the inner Solar System whereas radioisotope thermoelectric generators are commonly used for missions to the outer Solar System and beyond. For Juno however the three largest solar panel wings ever deployed on a planetary probe play an integral role in stabilizing the spacecraft as well as generating power. During the science mission infrared and microwave instruments will measure the thermal radiation emanating from deep within Jupiter's atmosphere. These observations will complement previous studies of its composition by assessing the abundance and distribution of water and therefore oxygen. This data will provide insight into Jupiter's origins. Juno will also investigate the convection that drives natural circulation patterns in Jupiter's atmosphere. Other instruments aboard Juno will gather data about its gravitational field and polar magnetosphere. The Juno mission was planned to conclude in February 2018 after completing 37 orbits of Jupiter but now has been commissioned through 2025 to do a further 42 additional orbits of Jupiter as well as close flybys of Ganymede Europa and Io. The probe was then intended to be deorbited and burnt up in Jupiter's outer atmosphere to avoid any possibility of impact and biological contamination of one of its moons. The Juno spacecraft's suite of science instruments will: Determine the ratio of oxygen to hydrogen effectively measuring the abundance of water in Jupiter which will help distinguish among prevailing theories linking Jupiter's formation to the Solar System; Obtain a better estimate of Jupiter's core mass which will also help distinguish among prevailing theories linking Jupiter's formation to the Solar System; Precisely map Jupiter's gravitational field to assess the distribution of mass in Jupiter's interior including properties of its structure and dynamics; Precisely map Jupiter's magnetic field to assess the origin and structure of the field and the depth at which the planet's magnetic field is created. This experiment will also help scientists understand the fundamental physics of dynamo theory; Map the variation in atmospheric composition temperature structure cloud opacity and dynamics to pressures far greater than 100 bar 10 MPa; 1500 psi at all latitudes; Characterize and explore the three-dimensional structure of Jupiter's polar magnetosphere and auroras; and Measure the orbital frame-dragging known also as Lense-Thirring precession caused by the angular momentum of Jupiter and possibly a new test of general relativity effects connected with the Jovian rotation. National Aeronautics and Space Administration unknown

Ground Zero Books · États-Unis55,00 $US≈ 46,54 €

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