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Author :
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ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.:/5 (317 download)
Download or read book Mars Flyer Rocket Propulsion Risk Assessment: ARC Testing written by and published by . This book was released on 2001 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781720619741
Total Pages : 36 pages
Book Rating : 4.6/5 (197 download)
Download or read book Mars Flyer Rocket Propulsion Risk Assessment Kaiser Marquardt Testing written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-03 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the investigation of a 10-N, bipropellant thruster, operating at -40 C, with monomethylhydrazine (MMH) and 25% nitric oxide in nitrogen tetroxide (MON-25). The thruster testing was conducted as part of a risk reduction activity for the Mars Flyer, a proposed mission to fly a miniature airplane in the Martian atmosphere. Testing was conducted using an existing thruster, designed for MMH and MON-3 propellants. The nitric oxide content of MON-3 was increased to 25%, to lower its freezing point to -55 C. The thruster was conditioned, along with the propellants, to temperature prior to hot firing. Thruster operating parameters included oxidizer-to-fuel mixture ratios of 1.6 to 2.7 and inlet pressure ranging from 689 to 2070 kPa. The test matrix consisted of many 10-second firings and several 60-, 300-, 600-, and 1200-second firings, as well as pulse testing. The thruster successfully accumulated nearly 10,000 seconds of operation without failure, at temperatures ranging from -40 C to 22 C. At nominal inlet pressures, the ignition delay was comparable to MMH/MON-3 operation. The optimal performance for the 8.9-N thruster was determined to be at a mixture ratio of 1.93 with an average specific impulse of 298 sec.Marquardt, KaiserGlenn Research CenterLIQUID ROCKET PROPELLANTS; PERFORMANCE TESTS; OXIDIZERS; NITROGEN TETROXIDE; MARS ATMOSPHERE; ROCKET ENGINES; FAILURE; ACCUMULATIONS; FLYING PERSONNEL; INLET PRESSURE; MELTING POINTS; MINIATURIZATION; MONOMETHYLHYDRAZINES; NITRIC OXIDE; SPECIFIC IMPULSE
Author :
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (317 download)
Download or read book Mars Flyer Rocket Propulsion Risk Assessment Kaiser Marquardt Testing written by and published by . This book was released on 2001 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Publisher : DIANE Publishing
ISBN 13 : 1428995080
Total Pages : 87 pages
Book Rating : 4.4/5 (289 download)
Download or read book Comparison of Mars aircraft propulsion systems written by and published by DIANE Publishing. This book was released on with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Publisher :
ISBN 13 :
Total Pages : 880 pages
Book Rating : 4.3/5 (243 download)
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1995 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721580460
Total Pages : 30 pages
Book Rating : 4.5/5 (84 download)
Download or read book Robotic Mars Sample Return written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-20 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comparison of the risk associated with two alternative scenarios for a robotic Mars sample return mission was conducted. Two alternative mission scenarios were identified, the Jet Propulsion Lab (JPL) reference Mission and a mission proposed by Johnson Space Center (JSC). The JPL mission was characterized by two landers and an orbiter, and a Mars orbit rendezvous to retrieve the samples. The JSC mission (Direct/SEP) involves a solar electric propulsion (SEP) return to earth followed by a rendezvous with the space shuttle in earth orbit. A qualitative risk assessment to identify and characterize the risks, and a risk analysis to quantify the risks were conducted on these missions. Technical descriptions of the competing scenarios were developed in conjunction with NASA engineers and the sequence of events for each candidate mission was developed. Risk distributions associated with individual and combinations of events were consolidated using event tree analysis in conjunction with Monte Carlo techniques to develop probabilities of mission success for each of the various alternatives. The results were the probability of success of various end states for each candidate scenario. These end states ranged from complete success through various levels of partial success to complete failure. Overall probability of success for the Direct/SEP mission was determined to be 66% for the return of at least one sample and 58% for the JPL mission for the return of at least one sample cache. Values were also determined for intermediate events and end states as well as for the probability of violation of planetary protection. Overall mission planetary protection event probabilities of occurrence were determined to be 0.002% and 1.3% for the Direct/SEP and JPL Reference missions respectively. Lalk, Thomas R. and Spence, Cliff A. Johnson Space Center
Author :
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ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.:/5 (317 download)
Download or read book Overview of Propulsion Systems for a Mars Aircraft written by and published by . This book was released on 2001 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.:/5 (317 download)
Download or read book Probabilistic Risk Assessment written by and published by . This book was released on 2000 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains references to documents in the NASA Scientific and Technical (STI) Database.
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309185726
Total Pages : 132 pages
Book Rating : 4.3/5 (91 download)
Download or read book Managing Space Radiation Risk in the New Era of Space Exploration written by National Research Council and published by National Academies Press. This book was released on 2008-05-29 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of the Vision for Space Exploration (VSE), NASA is planning for humans to revisit the Moon and someday go to Mars. An important consideration in this effort is protection against the exposure to space radiation. That radiation might result in severe long-term health consequences for astronauts on such missions if they are not adequately shielded. To help with these concerns, NASA asked the NRC to further the understanding of the risks of space radiation, to evaluate radiation shielding requirements, and recommend a strategic plan for developing appropriate mitigation capabilities. This book presents an assessment of current knowledge of the radiation environment; an examination of the effects of radiation on biological systems and mission equipment; an analysis of current plans for radiation protection; and a strategy for mitigating the risks to VSE astronauts.
Author : National Academies of Sciences Engineering and Medicine
Publisher :
ISBN 13 : 9780309684804
Total Pages : pages
Book Rating : 4.6/5 (848 download)
Download or read book Space Nuclear Propulsion for Human Mars Exploration written by National Academies of Sciences Engineering and Medicine and published by . This book was released on 2021-11-12 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Space Nuclear Propulsion for Human Mars Exploration identifies primary technical and programmatic challenges, merits, and risks for developing and demonstrating space nuclear propulsion technologies of interest to future exploration missions. This report presents key milestones and a top-level development and demonstration roadmap for performance nuclear thermal propulsion and nuclear electric propulsion systems and identifies missions that could be enabled by successful development of each technology.
Author : United States. General Accounting Office
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.F/5 ( download)
Download or read book Space Shuttle written by United States. General Accounting Office and published by . This book was released on 1996 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781724340351
Total Pages : 442 pages
Book Rating : 4.3/5 (43 download)
Download or read book Probabilistic Risk Assessment of the Space Shuttle. Phase 3 written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-27 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this volume, volume 4 (of five volumes), the discussion is focussed on the system models and related data references and has the following subsections: space shuttle main engine, integrated solid rocket booster, orbiter auxiliary power units/hydraulics, and electrical power system. Fragola, Joseph R. and Maggio, Gaspare and Frank, Michael V. and Gerez, Luis and Mcfadden, Richard H. and Collins, Erin P. and Ballesio, Jorge and Appignani, Peter L. and Karns, James J. Unspecified Center NASA-CR-197811, NAS 1.26:197811, SAICNY95-02-25-VOL-4 NASW-4911...
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Publisher :
ISBN 13 :
Total Pages : 772 pages
Book Rating : 4.:/5 (3 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309219779
Total Pages : 178 pages
Book Rating : 4.3/5 (92 download)
Download or read book Limiting Future Collision Risk to Spacecraft written by National Research Council and published by National Academies Press. This book was released on 2011-11-16 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Derelict satellites, equipment and other debris orbiting Earth (aka space junk) have been accumulating for many decades and could damage or even possibly destroy satellites and human spacecraft if they collide. During the past 50 years, various National Aeronautics and Space Administration (NASA) communities have contributed significantly to maturing meteoroid and orbital debris (MMOD) programs to their current state. Satellites have been redesigned to protect critical components from MMOD damage by moving critical components from exterior surfaces to deep inside a satellite's structure. Orbits are monitored and altered to minimize the risk of collision with tracked orbital debris. MMOD shielding added to the International Space Station (ISS) protects critical components and astronauts from potentially catastrophic damage that might result from smaller, untracked debris and meteoroid impacts. Limiting Future Collision Risk to Spacecraft: An Assessment of NASA's Meteoroid and Orbital Debris Program examines NASA's efforts to understand the meteoroid and orbital debris environment, identifies what NASA is and is not doing to mitigate the risks posed by this threat, and makes recommendations as to how they can improve their programs. While the report identified many positive aspects of NASA's MMOD programs and efforts including responsible use of resources, it recommends that the agency develop a formal strategic plan that provides the basis for prioritizing the allocation of funds and effort over various MMOD program needs. Other necessary steps include improvements in long-term modeling, better measurements, more regular updates of the debris environmental models, and other actions to better characterize the long-term evolution of the debris environment.
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781724339652
Total Pages : 582 pages
Book Rating : 4.3/5 (396 download)
Download or read book Probabilistic Risk Assessment of the Space Shuttle. Phase 3 written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-27 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of the probabilistic risk assessment methodology to a Space Shuttle environment, particularly to the potential of losing the Shuttle during nominal operation is addressed. The different related concerns are identified and combined to determine overall program risks. A fault tree model is used to allocate system probabilities to the subsystem level. The loss of the vehicle due to failure to contain energetic gas and debris, to maintain proper propulsion and configuration is analyzed, along with the loss due to Orbiter, external tank failure, and landing failure or error. Fragola, Joseph R. and Maggio, Gaspare and Frank, Michael V. and Gerez, Luis and Mcfadden, Richard H. and Collins, Erin P. and Ballesio, Jorge and Appignani, Peter L. and Karns, James J. Unspecified Center NASA-CR-197809, NAS 1.26:197809, SAICNY95-02-25-VOL-2 NASW-4911...
Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
ISBN 13 : 9781723843365
Total Pages : 68 pages
Book Rating : 4.8/5 (433 download)
Download or read book Fractal Risk Assessment of ISS Propulsion Module in Meteoroid and Orbital Debris Environments written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-19 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unique and innovative risk assessment of the International Space Station (ISS) Propulsion Module is conducted using fractal modeling of the Module's response to the meteoroid and orbital debris environments. Both the environment models and structural failure modes due to the resultant hypervelocity impact phenomenology, as well as Module geometry, are investigated for fractal applicability. The fractal risk assessment methodology could produce a greatly simplified alternative to current methodologies, such as BUMPER analyses, while maintaining or increasing the number of complex scenarios that can be assessed. As a minimum, this innovative fractal approach will provide an independent assessment of existing methodologies in a unique way.Mog, Robert A.Marshall Space Flight CenterRISK; METEOROIDS; FRACTALS; INTERNATIONAL SPACE STATION; STRUCTURAL FAILURE; SPACE DEBRIS; ASSESSMENTS; FAILURE MODES; ENVIRONMENT MODELS; HYPERVELOCITY IMPACT; PHENOMENOLOGY
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721258321
Total Pages : 26 pages
Book Rating : 4.2/5 (583 download)
Download or read book Systems Safety, Reliability, and Risk Assessment. Task 4 written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-16 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes support provided by Science Applications International Corporation (SAIC) to the NASA/Marshall Space Flight Center (MSFC). Work under this contract was performed in support of the Advanced Space Transportation Program and the Second Generation RLV Program Office. Marshall Space Flight Center
