{"product_id":"compass-final-report-national-aeronautics-and-administration-9781503248984","title":"COMPASS Final Report: Radioisotope Electric Propulsion (REP) Centaur Orbiter New Frontiers Mission","description":"Radioisotope Electric Propulsion (REP) has been shown in past studies to enable missions to outer planetary bodies including the orbiting of Centaur asteroids. Key to the feasibility for REP missions are long life, low power electric propulsion (EP) devices, low mass Radioisotope Power System (RPS) and light spacecraft (S\/C) components. In order to determine the key parameters for EP devices to perform these REP missions a design study was completed to design an REP S\/C to orbit a Centaur in a New Frontiers (NF) cost cap. The design shows that an orbiter using several long lived (approx. 200 kg xenon (Xe) throughput), low power (approx. 700 W) Hall thrusters teamed with six (150 W each) Advanced Stirling Radioisotope Generators (ASRG) can deliver 60 kg of science instruments to a Centaur in 10 yr within the NF cost cap. Optimal specific impulses (Isp) for the Hall thrusters were found to be around 2000 s with thruster efficiencies over 40 percent. Not only can the REP S\/C enable orbiting a Centaur (when compared to an all chemical mission only capable of flybys) but the additional power from the REP system can be used to enhance science and simplify communications.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e National Aeronautics and Administration\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 1503248984\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781503248984\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Createspace Independent Publishing Platform\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 11\/16\/2014\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 78\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.45lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 11.02h x 8.50w x 0.16d","brand":"National Aeronautics and Administration","offers":[{"title":"Paperback","offer_id":47611759427839,"sku":"9781503248984","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_9e5b146b-ada2-42f8-b85d-779cb0963588.jpg?v=1764515888","url":"https:\/\/www.whiterainbookhouse.com\/products\/compass-final-report-national-aeronautics-and-administration-9781503248984","provider":"WR Book House","version":"1.0","type":"link"}