Vehicle and mission design options for the human exploration of Mars/Phobos using "Bimodal" NTR and LANTR propulsion PDF Download
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Author:
Publisher: DIANE Publishing
ISBN: 1428995625
Category :
Languages : en
Pages : 54
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Book Description
Author:
Publisher: DIANE Publishing
ISBN: 1428995625
Category :
Languages : en
Pages : 54
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Book Description
Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781729207581
Category : Science
Languages : en
Pages : 52
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Book Description
The nuclear thermal rocket (NTR) is one of the leading propulsion options for future human missions to Mars because of its high specific impulse (Isp-850-1000 s) capability and its attractive engine thrust-to-weight ratio (approximately equal 3-10). To stay within the available mass and payload volume limits of a "Magnum" heavy lift vehicle, a high performance propulsion system is required for trans-Mars injection (TMI). An expendable TMI stage, powered by three 15 thousand pounds force (klbf) NTR engines is currently under consideration by NASA for its Design Reference Mission (DRM). However, because of the miniscule burnup of enriched uranium-235 during the Earth departure phase (approximately 10 grams out of 33 kilograms in each NTR core), disposal of the TMI stage and its engines after a single use is a costly and inefficient use of this high performance stage. By reconfiguring the engines for both propulsive thrust and modest power generation (referred to as "bimodal" operation), a robust, multiple burn, "power-rich" stage with propulsive Mars capture and reuse capability is possible, A family of modular "bimodal" NTR (BNTR) vehicles are described which utilize a common "core" stage powered by three 15 klbf BNTRs that produce 50 kWe of total electrical power for crew life support, an active refrigeration / reliquification system for long term, "zero-boiloff" liquid hydrogen (LH2) storage, and high data rate communications. An innovative, spine-like "saddle truss" design connects the core stage and payload element and is open underneath to allow supplemental "in-line" propellant tanks and contingency crew consumables to be easily jettisoned to improve vehicle performance. A "modified" DRM using BNTR transfer vehicles requires fewer transportation system elements, reduces IMLEO and mission risk, and simplifies space operations. By taking the next logical step--use of the BNT
Author: Robert S. Arrighi
Publisher: Government Printing Office
ISBN: 9780160932106
Category : Technology & Engineering
Languages : en
Pages : 428
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Book Description
The book documents Glenn's many research specialties over those 75 years. Among them are early jet engines and rockets; flight safety and fuel efficiency tested in premier icing and wind tunnels; liquid hydrogen fuel which, despite skeptics like aerospace engineer Wernher von Braun, helped the U.S. win the race to the moon; and electric propulsion, considered key to future space flight. Space enthusiasts, aviation personnel, aerospace engineers, and inventors may be interested in this comprehensive and milestone volume. Other related products: NASA at 50: Interviews With NASA\'s Senior Leadership can be found here: https: //bookstore.gpo.gov/products/sku/033-000-01360-4 Other products published by National Aeronautical and Space Administration (NASA) can be found here: https: //bookstore.gpo.gov/agency/550
Author: Yann Chemin
Publisher: BoD – Books on Demand
ISBN: 1789841275
Category : Science
Languages : en
Pages : 126
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Book Description
Lunar science is in the middle of a small revolution, with now many new countries sending orbiters, landers, and even sample return missions to the moon. Additionally, both governments and private companies are now more and more considering the moon as a base for solar system exploration. With such an increase in attention, lunar science is now encompassing several unified dimensions. The first is the science of the moon itself, its origin, evolution, and inner composition. The second is how humans can live on the moon, covering biology and in general the logistics of surviving there, including surface mapping and in-situ resource utilization.
Author: D. Barrow
Publisher: Aria Software Ireland Ltd
ISBN: 0955225515
Category : Computer programmers
Languages : en
Pages : 157
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Book Description
This book among other things contains a short biography of a nerd. The common pitfalls nerds fall into going through life and how to avoid them. What it is to be a nerd and how a nerds relate to other people. What every nerd wants to know about strippers but is afraid to ask. The alternatives to strip clubs & discos for nerds wanting to meet women. A groundbreaking theory of how consciousness determines reality. A science section which includes how a mission to Mars can be accomplished, the future of robotics and much more. About the Author Denis Joseph Barrow is a freelance computer programmer who has a B.Eng Electronics from the Cork institute of Technology. He formed his own company Aria Software Ireland Ltd in October 1998. His heroes include Nobel Prize winning Physicist Richard Feynman and he enjoys attempting to play guitar and listening to Van Halen and Thin Lizzy in his spare time.
Author: Bradley L. Jolliff
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 1501509535
Category : Science
Languages : en
Pages : 756
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Book Description
Volume 60 of Reviews in Mineralogy and Geochemistry assesses the current state of knowledge of lunar geoscience, given the data sets provided by missions of the 1990's, and lists remaining key questions as well as new ones for future exploration to address. It documents how a planet or moon other than the world on which we live can be studied and understood in light of integrated suites of specific kinds of information. The Moon is the only body other than Earth for which we have material samples of known geologic context for study. This volume seeks to show how the different kinds of information gained about the Moon relate to each other and also to learn from this experience, thus allowing more efficient planning for the exploration of other worlds.
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1152
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Author:
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 604
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1032
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Book Description
Author:
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 514
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Book Description
