Experiments in Reduced Gravity

Experiments in Reduced Gravity
Author: Nikolaus Kuhn
Publsiher: Elsevier Science Limited
Total Pages: 50
Release: 2014-09-05
ISBN 10: 9780127999654
ISBN 13: 0127999655
Language: EN, FR, DE, ES & NL

Experiments in Reduced Gravity Book Review:

Experiments in Reduced Gravity: Sediment Settling on Mars is the first book to be published that reflects experiments conducted on Martian geomorphology in reduced gravity. This brief yet important book on sediment experiments assesses the theoretical and empirical foundation of the models used to analyze the increasing information we have on the past geography on Mars. The book also evaluates the need to develop new methods for analyzing new information by providing a conceptual outline and a case study on how experiments can be used to test current theoretical considerations. The conceptual approach to identifying the need for and role of experiments will be of interest to planetary scientists and geoscientists not necessarily involved with Mars, but those using experiments in their research who can apply the book's concepts. Includes figures, diagrams, illustrations, and photographs to vividly explore experiments and outcomes in reduced gravity Provides an outline of planned experiments and questions related to Martian geomorphology Features results from the MarsSedEx 1 Experiment in 2012

High Pressure Droplet Burning Experiments in Reduced Gravity

High Pressure Droplet Burning Experiments in Reduced Gravity
Author: C. Chauveau
Publsiher: Unknown
Total Pages: 329
Release: 1996
ISBN 10:
ISBN 13: OCLC:1109606224
Language: EN, FR, DE, ES & NL

High Pressure Droplet Burning Experiments in Reduced Gravity Book Review:

Saltation Threshold Experiments Conducted Under Reduced Gravity Conditions

Saltation Threshold Experiments Conducted Under Reduced Gravity Conditions
Author: B.R. White
Publsiher: Unknown
Total Pages: 9
Release: 1987
ISBN 10:
ISBN 13: OCLC:1109508879
Language: EN, FR, DE, ES & NL

Saltation Threshold Experiments Conducted Under Reduced Gravity Conditions Book Review:

Feasibility of Reduced Gravity Experiments Involving Quiescent Uniform Particle Cloud Combustion

Feasibility of Reduced Gravity Experiments Involving Quiescent  Uniform Particle Cloud Combustion
Author: Anonim
Publsiher: Unknown
Total Pages: 40
Release: 1989
ISBN 10:
ISBN 13: NASA:31769000584212
Language: EN, FR, DE, ES & NL

Feasibility of Reduced Gravity Experiments Involving Quiescent Uniform Particle Cloud Combustion Book Review:

Computational Fluid Dynamics Models of Electromagnetic Levitation Experiments in Reduced Gravity

Computational Fluid Dynamics Models of Electromagnetic Levitation Experiments in Reduced Gravity
Author: Gwendolyn Bracker
Publsiher: Unknown
Total Pages: 329
Release: 2019
ISBN 10:
ISBN 13: OCLC:1151628573
Language: EN, FR, DE, ES & NL

Computational Fluid Dynamics Models of Electromagnetic Levitation Experiments in Reduced Gravity Book Review:

The Motion of Bubbles and Drops in Reduced Gravity

The Motion of Bubbles and Drops in Reduced Gravity
Author: R. Shankar Subramanian,R. Balasubramaniam
Publsiher: Cambridge University Press
Total Pages: 471
Release: 2001-04-09
ISBN 10: 9780521496056
ISBN 13: 0521496055
Language: EN, FR, DE, ES & NL

The Motion of Bubbles and Drops in Reduced Gravity Book Review:

This 2001 book provides a thorough review of the motion of bubbles and drops in reduced gravity.

Definition of Experiments to Investigate Fire Suppressants in Microgravity

Definition of Experiments to Investigate Fire Suppressants in Microgravity
Author: National Aeronautics and Space Administration (NASA)
Publsiher: Createspace Independent Publishing Platform
Total Pages: 64
Release: 2018-07-06
ISBN 10: 9781722334581
ISBN 13: 1722334584
Language: EN, FR, DE, ES & NL

Definition of Experiments to Investigate Fire Suppressants in Microgravity Book Review:

Defined and justified here are the conceptual design and operation of a critical set of experiments expected to yield information on suppressants and on suppressant delivery systems under realistic spacecraft-fire conditions (smoldering). Specific experiment parameters are provided on the solid fuel (carbon), oxidants (habitable spacecraft atmospheres), fuel/oxidant supply, mixing mode, and rate (quiescent and finite; ventilated and replenishable), ignition mode, event, and reignition tendency, fire-zone size, fire conditions, lifetime, and consequences (toxicity), suppressants (CO2, H2O, N2) and suppressant delivery systems, and diagnostics. Candidate suppressants were identified after an analysis of how reduced gravity alters combustion, and how these alterations may influence the modes, mechanisms, and capacities of terrestrial agents to suppress unwanted combustion, or fire. Preferred spacecraft suppression concepts included the local, near-quiescent application of a gas, vapor, or mist that has thermophysical fire-suppression activity and is chemically inert under terrestrial (normal gravity) combustion conditions. The scale, number, and duration (about 1 hour) of the proposed low-gravity experiments were estimated using data not only on the limitations imposed by spacecraft-carrier (Shuttle or Space Station Freedom) accommodations, but also data on the details and experience of standardized smolder-suppression experiments at normal gravity. Deliberately incorporated into the conceptual design was sufficient interchangeability for the prototype experimental package to fly either on Shuttle now or Freedom later. This flexibility is provided by the design concept of up to 25 modular fuel canisters within a containment vessel, which permits both integration into existing low-gravity in-space combustion experiments and simultaneous testing of separate experiments to conserve utilities and time. Reuther, James J. Unspecified Center...

The Microgravity Research Experiments Micrex Data Base Volume 1

The Microgravity Research Experiments  Micrex  Data Base  Volume 1
Author: National Aeronautics and Space Administration (NASA)
Publsiher: Createspace Independent Publishing Platform
Total Pages: 374
Release: 2018-08-04
ISBN 10: 9781724687883
ISBN 13: 1724687883
Language: EN, FR, DE, ES & NL

The Microgravity Research Experiments Micrex Data Base Volume 1 Book Review:

An electronic data base identifying over 800 fluids and materials processing experiments performed in a low-gravity environment has been created at NASA Marshall Space Flight Center. The compilation, called MICREX (MICrogravity Research Experiments), was designed to document all such experimental efforts performed (1) on U.S. manned space vehicles, (2) on payloads deployed from U.S. manned space vehicles, and (3) on all domestic and international sounding rockets (excluding those of China and the former U.S.S.R.). Data available on most experiments include (1) principal and co-investigators, (2) low-gravity mission, (3) processing facility, (4) experimental objectives and results, (5) identifying key words, (6) sample materials, (7) applications of the processed materials/research area, (8) experiment descriptive publications, and (9) contacts for more information concerning the experiment. This technical memorandum (1) summarizes the historical interest in reduced-gravity fluid dynamics, (2) describes the experimental facilities employed to examine reduced gravity fluid flow, (3) discusses the importance of a low-gravity fluids and materials processing data base, (4) describes the MICREX data base format and computational World Wide Web access procedures, and (5) documents (in hard-copy form) the descriptions of the first 600 fluids and materials processing experiments entered into MICREX. Winter, C. A. and Jones, J.C. Marshall Space Flight Center NASA-TM-108523-Vol-1, NAS 1.15:108523-Vol-1 ...

Two phase Alkali metal Experiments in Reduced Gravity

Two phase Alkali metal Experiments in Reduced Gravity
Author: Anonim
Publsiher: Unknown
Total Pages: 329
Release: 1986
ISBN 10:
ISBN 13: OCLC:727213394
Language: EN, FR, DE, ES & NL

Two phase Alkali metal Experiments in Reduced Gravity Book Review:

Future space missions envision the use of large nuclear reactors utilizing either a single or a two-phase alkali-metal working fluid. The design and analysis of such reactors require state-of-the-art computer codes that can properly treat alkali-metal flow and heat transfer in a reduced-gravity environment. A literature search of relevant experiments in reduced gravity is reported on here, and reveals a paucity of data for such correlations. The few ongoing experiments in reduced gravity are noted. General plans are put forth for the reduced-gravity experiments which will have to be performed, at NASA facilities, with benign fluids. A similar situation exists regarding two-phase alkali-metal flow and heat transfer, even in normal gravity. Existing data are conflicting and indequate for the task of modeling a space reactor using a two-phase alkali-metal coolant. The major features of past experiments are described here. Data from the reduced-gravity experiments with innocuous fluids are to be combined with normal gravity data from the two-phase alkali-metal experiments. Analyses undertaken here give every expectation that the correlations developed from this data base will provide a valid representation of alkali-metal heat transfer and pressure drop in reduced gravity.

Two phase Reduced Gravity Experiments for a Space Reactor Design

Two phase Reduced Gravity Experiments for a Space Reactor Design
Author: Anonim
Publsiher: Unknown
Total Pages: 329
Release: 1986
ISBN 10:
ISBN 13: OCLC:1065834978
Language: EN, FR, DE, ES & NL

Two phase Reduced Gravity Experiments for a Space Reactor Design Book Review:

Future space missions envision the use of large nuclear reactors utilizing either a single or a two-phase alkali-metal working fluid. The design and analysis of such reactors require state-of-the-art computer codes that can properly treat alkali-metal flow and heat transfer in a reduced-gravity environment. New flow regime maps, models, and correlations are required if the codes are to be successfully applied to reduced-gravity flow and heat transfer. General plans are put forth for the reduced-gravity experiments which will have to be performed, at NASA facilities, with benign fluids. Data from the reduced-gravity experiments with innocuous fluids are to be combined with normal gravity data from two-phase alkali-metal experiments. Because these reduced-gravity experiments will be very basic, and will employ small test loops of simple geometry, a large measure of commonality exists between them and experiments planned by other organizations. It is recommended that a committee be formed, to coordinate all ongoing and planned reduced gravity flow experiments.

The Microgravity Research Experiments Micrex Data Base Volume 4

The Microgravity Research Experiments  Micrex  Data Base  Volume 4
Author: National Aeronautics and Space Administration (NASA)
Publsiher: Createspace Independent Publishing Platform
Total Pages: 512
Release: 2018-08-04
ISBN 10: 9781724687814
ISBN 13: 1724687816
Language: EN, FR, DE, ES & NL

The Microgravity Research Experiments Micrex Data Base Volume 4 Book Review:

An electronic data base identifying over 800 fluids and materials processing experiments performed in a low-gravity environment has been created at NASA Marshall Space Flight Center. The compilation, called MICREX (MICrogravity Research Experiments), was designed to document all such experimental efforts performed (1) on U.S. manned space vehicles, (2) on payloads deployed from U.S. manned space vehicles, and (3) on all domestic and international sounding rockets (excluding those of China and the former U.S.S.R.). Data available on most experiments include (1) principal and co-investigators (2) low-gravity mission, (3) processing facility, (4) experimental objectives and results, (5) identifying key words, (6) sample materials, (7) applications of the processed materials/research area, (8) experiment descriptive publications, and (9) contacts for more information concerning the experiment. This technical Memorandum (1) summarizes the historical interest in reduced-gravity fluid dynamics, (2) describes the importance of a low-gravity fluids and materials processing data base, (4) describes the MICREX data base format and computational World Wide Web access procedures, and (5) documents (in hard-copy form) the descriptions of the first 600 fluids and materials processing experiments entered into MICREX. Winter, C. A. and Jones, J. C. Marshall Space Flight Center NASA-TM-108523-Vol-4, NAS 1.15:108523-Vol-4 ...

Earth Partial and Reduced Gravity Experiments and Numerical Work on Propane oxygen Cool Flames at Sub atmospheric Pressures

Earth  Partial  and Reduced Gravity Experiments and Numerical Work on Propane oxygen Cool Flames at Sub atmospheric Pressures
Author: Michael Robert Foster,Howard Pearlman
Publsiher: Unknown
Total Pages: 226
Release: 2006
ISBN 10:
ISBN 13: OCLC:133204101
Language: EN, FR, DE, ES & NL

Earth Partial and Reduced Gravity Experiments and Numerical Work on Propane oxygen Cool Flames at Sub atmospheric Pressures Book Review:

Experiments in Reduced Gravity

Experiments in Reduced Gravity
Author: Nikolaus Kuhn
Publsiher: Elsevier
Total Pages: 50
Release: 2014-09-06
ISBN 10: 0128004622
ISBN 13: 9780128004623
Language: EN, FR, DE, ES & NL

Experiments in Reduced Gravity Book Review:

Experiments in Reduced Gravity: Sediment Settling on Mars is the first book to be published that reflects experiments conducted on Martian geomorphology in reduced gravity. This brief yet important book on sediment experiments assesses the theoretical and empirical foundation of the models used to analyze the increasing information we have on the past geography on Mars. The book also evaluates the need to develop new methods for analyzing new information by providing a conceptual outline and a case study on how experiments can be used to test current theoretical considerations. The conceptual approach to identifying the need for and role of experiments will be of interest to planetary scientists and geoscientists not necessarily involved with Mars, but those using experiments in their research who can apply the book’s concepts. Includes figures, diagrams, illustrations, and photographs to vividly explore experiments and outcomes in reduced gravity Provides an outline of planned experiments and questions related to Martian geomorphology Features results from the MarsSedEx 1 Experiment in 2012

Recapturing a Future for Space Exploration

Recapturing a Future for Space Exploration
Author: National Research Council,Division on Engineering and Physical Sciences,Aeronautics and Space Engineering Board,Space Studies Board,Committee for the Decadal Survey on Biological and Physical Sciences in Space
Publsiher: National Academies Press
Total Pages: 464
Release: 2012-01-30
ISBN 10: 0309163846
ISBN 13: 9780309163842
Language: EN, FR, DE, ES & NL

Recapturing a Future for Space Exploration Book Review:

More than four decades have passed since a human first set foot on the Moon. Great strides have been made in our understanding of what is required to support an enduring human presence in space, as evidenced by progressively more advanced orbiting human outposts, culminating in the current International Space Station (ISS). However, of the more than 500 humans who have so far ventured into space, most have gone only as far as near-Earth orbit, and none have traveled beyond the orbit of the Moon. Achieving humans' further progress into the solar system had proved far more difficult than imagined in the heady days of the Apollo missions, but the potential rewards remain substantial. During its more than 50-year history, NASA's success in human space exploration has depended on the agency's ability to effectively address a wide range of biomedical, engineering, physical science, and related obstacles--an achievement made possible by NASA's strong and productive commitments to life and physical sciences research for human space exploration, and by its use of human space exploration infrastructures for scientific discovery. The Committee for the Decadal Survey of Biological and Physical Sciences acknowledges the many achievements of NASA, which are all the more remarkable given budgetary challenges and changing directions within the agency. In the past decade, however, a consequence of those challenges has been a life and physical sciences research program that was dramatically reduced in both scale and scope, with the result that the agency is poorly positioned to take full advantage of the scientific opportunities offered by the now fully equipped and staffed ISS laboratory, or to effectively pursue the scientific research needed to support the development of advanced human exploration capabilities. Although its review has left it deeply concerned about the current state of NASA's life and physical sciences research, the Committee for the Decadal Survey on Biological and Physical Sciences in Space is nevertheless convinced that a focused science and engineering program can achieve successes that will bring the space community, the U.S. public, and policymakers to an understanding that we are ready for the next significant phase of human space exploration. The goal of this report is to lay out steps and develop a forward-looking portfolio of research that will provide the basis for recapturing the excitement and value of human spaceflight--thereby enabling the U.S. space program to deliver on new exploration initiatives that serve the nation, excite the public, and place the United States again at the forefront of space exploration for the global good.

International Space Station Increment 2 Quick Look Report

International Space Station Increment 2 Quick Look Report
Author: National Aeronautics and Space Adm Nasa
Publsiher: Independently Published
Total Pages: 70
Release: 2018-09-20
ISBN 10: 9781723853661
ISBN 13: 1723853666
Language: EN, FR, DE, ES & NL

International Space Station Increment 2 Quick Look Report Book Review:

The objective of this quick look report is to disseminate the International Space Station (ISS) Increment-2 reduced gravity environment preliminary analysis in a timely manner to the microgravity scientific community. This report is a quick look at the processed acceleration data collected by the Microgravity Acceleration Measurement System (MAMS) during the period of May 3 to June 8, 2001. The report is by no means an exhaustive examination of all the relevant activities, which occurred during the time span mentioned above for two reasons. First, the time span being considered in this report is rather short since the MAMS was not active throughout the time span being considered to allow a detailed characterization. Second, as the name of the report implied, it is a quick look at the acceleration data. Consequently, a more comprehensive report, the ISS Increment-2 report, will be published following the conclusion of the Increment-2 tour of duty. NASA sponsors the MAMS and the Space Acceleration Microgravity System (SAMS) to support microgravity science experiments, which require microgravity acceleration measurements. On April 19, 2001, both the MAMS and the SAMS units were launched on STS-100 from the Kennedy Space Center for installation on the ISS. The MAMS unit was flown to the station in support of science experiments requiring quasisteady acceleration data measurements, while the SAMS unit was flown to support experiments requiring vibratory acceleration data measurement. Both acceleration systems are also used in support of the vehicle microgravity requirements verification. The ISS reduced gravity environment analysis presented in this report uses mostly the MAMS acceleration data measurements (the Increment-2 report will cover both systems). The MAMS has two sensors. The MAMS Orbital Acceleration Research Experiment Sensor Subsystem, which is a low frequency range sensor (up to 1 Hz), is used to characterize the quasi-steady environment for payloads and ve

Reduced Gravity Boiling and Condensing Experiments Simulated with the COBRA TRAC Computer Code

Reduced Gravity Boiling and Condensing Experiments Simulated with the COBRA TRAC Computer Code
Author: Anonim
Publsiher: Unknown
Total Pages: 329
Release: 1988
ISBN 10:
ISBN 13: OCLC:1065871687
Language: EN, FR, DE, ES & NL

Reduced Gravity Boiling and Condensing Experiments Simulated with the COBRA TRAC Computer Code Book Review:

It is being recognized that there does not currently exist an adequate understanding of flow and heat transfer behavior in reduced- and zero-gravity. There is not a sufficient experimental fluid-thermal data base to develop design correlations for two-phase pressure losses, heat transfer coefficients, and critical heat flux limits in systems proposed for advanced power sources, propulsion, and other thermal management systems in space. Pacific Northwest Laboratory (PNL), is the lead laboratory for thermal hydraulics in the Department of Energy's Multimegawatt Space Power Program, and has the responsibility of developing microgravity thermal-hydraulic analysis capabilities for application to space nuclear power systems. In support of this program, PNL has performed a series of reduced-gravity two-phase flow experiments in the NASA KC-135 aircraft. The objective of the experiment was to supply basic thermal-hydraulic information that could be used in development of analytical design tools. 6 refs., 23 figs., 4 tabs.

8th International Workshop on Short Term Experiments Under Strongly Reduced Gravity Conditions Drop Tower Days 2006 in Japan

8th International Workshop on Short Term Experiments Under Strongly Reduced Gravity Conditions  Drop Tower Days 2006 in Japan
Author: Nihon-Maikurogurabiti-Ōyō-Gakkai,Osamu Fujita,Osamu Odawara
Publsiher: Unknown
Total Pages: 114
Release: 2007
ISBN 10:
ISBN 13: OCLC:254613657
Language: EN, FR, DE, ES & NL

8th International Workshop on Short Term Experiments Under Strongly Reduced Gravity Conditions Drop Tower Days 2006 in Japan Book Review:

Feasibility of Reduced Gravity Experiments Involving Quiescent Uniform Particle Cloud Combustion

Feasibility of Reduced Gravity Experiments Involving Quiescent  Uniform Particle Cloud Combustion
Author: National Aeronautics and Space Administration (NASA)
Publsiher: Createspace Independent Publishing Platform
Total Pages: 50
Release: 2018-07-03
ISBN 10: 9781722233105
ISBN 13: 1722233109
Language: EN, FR, DE, ES & NL

Feasibility of Reduced Gravity Experiments Involving Quiescent Uniform Particle Cloud Combustion Book Review:

The study of combustible particle clouds is of fundamental scientific interest as well as a practical concern. The principal scientific interests are the characteristic combustion properties, especially flame structure, propagation rates, stability limits, and the effects of stoichiometry, particle type, transport phenomena, and nonadiabatic processes on these properties. The feasibility tests for the particle cloud combustion experiment (PCCE) were performed in reduced gravity in the following stages: (1) fuel particles were mixed into cloud form inside a flammability tube; (2) when the concentration of particles in the cloud was sufficiently uniform, the particle motion was allowed to decay toward quiescence; (3) an igniter was energized which both opened one end of the tube and ignited the suspended particle cloud; and (4) the flame proceeded down the tube length, with its position and characteristic features being photographed by high-speed cameras. Gravitational settling and buoyancy effects were minimized because of the reduced gravity enviroment in the NASA Lewis drop towers and aircraft. Feasibility was shown as quasi-steady flame propagation which was observed for fuel-rich mixtures. Of greatest scientific interest is the finding that for near-stoichiometric mixtures, a new mode of flame propagation was observed, now called a chattering flame. These flames did not propagate steadily through the tube. Chattering modes of flame propagation are not expected to display extinction limits that are the same as those for acoustically undisturbed, uniform, quiescent clouds. A low concentration of fuel particles, uniformly distributed in a volume, may not be flammable but may be made flammable, as was observed, through induced segregation processes. A theory was developed which showed that chattering flame propagation was controlled by radiation from combustion products which heated the successive discrete laminae sufficiently to cause autoignition. Ross, Howard D. a...

Sts 107 Microgravity Environment Summary Report

Sts 107 Microgravity Environment Summary Report
Author: National Aeronautics and Space Administration (NASA)
Publsiher: Createspace Independent Publishing Platform
Total Pages: 178
Release: 2018-06-15
ISBN 10: 9781721146802
ISBN 13: 1721146806
Language: EN, FR, DE, ES & NL

Sts 107 Microgravity Environment Summary Report Book Review:

This summary report presents the results of the processed acceleration data measured aboard the Columbia orbiter during the STS-107 microgravity mission from January 16 to February 1, 2003. Two accelerometer systems were used to measure the acceleration levels due to vehicle and science operations activities that took place during the 16-day mission. Due to lack of precise timeline information regarding some payload's operations, not all of the activities were analyzed for this report. However, a general characterization of the microgravity environment of the Columbia Space Shuttle during the 16-day mission is presented followed by a more specific characterization of the environment for some designated payloads during their operations. Some specific quasi-steady and vibratory microgravity environment characterization analyses were performed for the following payloads: Structure of Flame Balls at Low Lewis-number-2, Laminar Soot Processes-2, Mechanics of Granular Materials-3 and Water Mist Fire-Suppression Experiment. The Physical Science Division of the National Aeronautics and Space Administration sponsors the Orbital Acceleration Research Experiment and the Space Acceleration Measurement System for Free Flyer to support microgravity science experiments, which require microgravity acceleration measurements. On January 16, 2003, both the Orbital Acceleration Research Experiment and the Space Acceleration Measurement System for Free Flyer accelerometer systems were launched on the Columbia Space Transportation System-107 from the Kennedy Space Center. The Orbital Acceleration Research Experiment supported science experiments requiring quasi-steady acceleration measurements, while the Space Acceleration Measurement System for Free Flyer unit supported experiments requiring vibratory acceleration measurement. The Columbia reduced gravity environment analysis presented in this report uses acceleration data collected by these two sets of accelerometer systems: The Orbita

Microgravity Combustion Science

Microgravity Combustion Science
Author: National Aeronautics and Space Adm Nasa
Publsiher: Independently Published
Total Pages: 50
Release: 2018-10-29
ISBN 10: 9781729340844
ISBN 13: 1729340849
Language: EN, FR, DE, ES & NL

Microgravity Combustion Science Book Review:

An earlier overview is updated which introduced the promise of microgravity combustion research and provided a brief survey of results and then current research participants, the available set of reduced gravity facilities, and plans for experimental capabilities in the space station era. Since that time, several research studies have been completed in drop towers and aircraft, and the first space based combustion experiments since Skylab have been conducted on the Shuttle. The microgravity environment enables a new range of experiments to be performed since buoyancy induced flows are nearly eliminated, normally obscured forces and flows may be isolated, gravitational settling or sedimentation is nearly eliminated, and larger time or length scales in experiments are feasible. In addition to new examinations of classical problems, (e.g., droplet burning), current areas of interest include soot formation and weak turbulence, as influenced by gravity. Glenn Research Center RTOP 674-22-05...