Fast Interplanetary Missions With Low Thrust Propulsion Systems

Author : W. E. Moeckel
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.18/5 ( download)

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Download or read book Fast Interplanetary Missions with Low-thrust Propulsion Systems written by W. E. Moeckel and published by . This book was released on 1961 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: A simple family of indirect-transfer trajectories between circular orbits is used to evaluate the mass ratio required to complete round-trip interplanetary missions using low-thrust propulsion systems. These trajectories, although not optimum, yielded very substantial reductions in total round-trip time for Mars missions with moderate increases in initial weight. For a powerplant specific weight [alpha] of 10 pounds per kilowatt of jet power, trip times were reduced from 1200 to 600 days, for a typical manned mission, with an initial weight increase of a factor of two. Comparison with a nuclear rocket with 1000-second specific impulse indicated that the electric-propulsion system required less initial weight for trip times as low as 550 days with [alpha]=10 and as low at 400 days with [alpha]=5 pounds per kilowatt. Further weight reductions would be expected with more nearly optimum trajectories.

Author : Duane W. Dugan
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.40/5 ( download)

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Download or read book The Role of Staged Space Propulsion Systems in Interplanetary Missions written by Duane W. Dugan and published by . This book was released on 1969 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Performance prediction for tandem stages of space propulsion systems in interplanetary flight.

Author :
Publisher :
ISBN 13 :
Total Pages : 798 pages
Book Rating : 4.41/5 ( download)

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Download or read book NASA Technical Report written by and published by . This book was released on 1963 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Stephen Kemble
Publisher : Springer Science & Business Media
ISBN 13 : 3540376453
Total Pages : 511 pages
Book Rating : 4.53/5 ( download)

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Download or read book Interplanetary Mission Analysis and Design written by Stephen Kemble and published by Springer Science & Business Media. This book was released on 2006-09-01 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present impetus to drive down the overall cost of space missions is leading to ever-increasing demands for more efficient design techniques over a wide range of interplanetary missions, and the methods now being utilised to do this are described in this timely and authoritative work.

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781725573055
Total Pages : 30 pages
Book Rating : 4.59/5 ( download)

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Download or read book Combined High and Low Thrust Propulsion for Fast Piloted Mars Missions written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-16 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mission benefits of using both high thrust nuclear thermal propulsion (NTP) and low acceleration, high specific impulse nuclear electric propulsion (NEP) to reduce piloted trip times to Mars with reasonable initial mass are assessed. Recent updates in mission design, such as the Earth fly-by return, are assessed for their impact on previous studies. In addition, the Synthesis Commission split mission to Mars in 2014 is also assessed using combined propulsion. Results show an 80 to 100 day reduction in trip time over the reference NTP or NEP systems and missions, with comparable or reduced vehicle initial masses. The impacts of the mission and system analyses upon technology planning and design are discussed. Gilland, James H. and Oleson, Steven R. Unspecified Center NASA-CR-190788, E-7423, NAS 1.26:190788 RTOP 539-72-00...

Author : W. E. Moeckel
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.58/5 ( download)

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Download or read book Fast Interplanetary Missions with Low-thrust Propulsion Systems written by W. E. Moeckel and published by . This book was released on 1961 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Jack B. Esgar
Publisher :
ISBN 13 :
Total Pages : 732 pages
Book Rating : 4.38/5 ( download)

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Download or read book Analytical Study of Soft Landings on Gas-filled Bags written by Jack B. Esgar and published by . This book was released on 1960 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Charles L. Zola
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.52/5 ( download)

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Download or read book A Method of Approximating Propellant Requirements of Low-thrust Trajectories written by Charles L. Zola and published by . This book was released on 1966 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Paul A. Libby
Publisher : Springer Science & Business Media
ISBN 13 : 3709154707
Total Pages : 267 pages
Book Rating : 4.00/5 ( download)

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Download or read book Space Flight and Re-Entry Trajectories written by Paul A. Libby and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this and a following issue (Vol. VIII, 1962, Fasc. 2-3) of "Astronautica Acta" there will appear the papers presented at the first international symposium sponsored by the International Academy of Astronautics of the International Astronautical Federation. The theme of the meeting was "Space Flight and Re-Entry Trajectories." It was held at Louveciennes outside of Paris on June 19-21, 1961. Sixteen papers by authors from nine countries were presented; attendees numbered from 80 to 100. The organizing committee for the symposium was as follows: Prof. PAUL A. LIBBY, Polytechnic Institute of Brooklyn, U.S.A., Chairman; Prof. LuiGI BROGLIO, University of Rome, Italy; Prof. B. FRAEIJS DE VEUBEKE, University of Liege, Belgium; Dr. D. G. KING-HELE, Royal Aircraft Establishment, Farnborough, Rants, United Kingdom; Prof. J. M. J. KooY, Royal Military School, Breda, Netherlands; Prof. JEAN KovALEVSKY, Bureau des Longitudes, Paris, France; Prof. RuDOLF PESEK, Academy of Sciences, Prague, Czechoslovakia. The detailed arrangements for the meeting were made in a most satisfactory manner by Dr. FRANK J. MALINA, Deputy Director of IAA and Mr. A. R. WEILLER, Acting Secretary of IAA. Prof. THEODORE VON KARMAN, Director of IAA, in his remarks closing the symposium indicated his satisfaction at the interest being shown in "the science of the future." The papers which follow will make a permanent contribution to the literature of this science.

Author : United States. Superintendent of Documents
Publisher :
ISBN 13 :
Total Pages : 1284 pages
Book Rating : 4.19/5 ( download)

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Download or read book Monthly Catalog of United States Government Publications, Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1980 with total page 1284 pages. Available in PDF, EPUB and Kindle. Book excerpt: