Download or read book Proceedings of the Workshop for Hypervelocity Impacts in Space written by J. A. M. McDonnell and published by . This book was released on 1992 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hypervelocity Impact HVI Volume 1 General Introduction written by National Aeronaut Administration (Nasa) and published by . This book was released on 2020-08-03 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: During 2003 and 2004, the Johnson Space Center's White Sands Testing Facility in Las Cruces, New Mexico conducted hypervelocity impact tests on the space shuttle wing leading edge. Hypervelocity impact tests were conducted to determine if Micro-Meteoroid/Orbital Debris impacts could be reliably detected and located using simple passive ultrasonic methods. This volume contains an executive summary, overview of the method, brief descriptions of all targets, and highlights of results and conclusions. Gorman, Michael R. and Ziola, Steven M. Langley Research Center NASA/CR-2007-214885/VOL1 NNL05AC19T; WBS 377816.06.03.03.06 HYPERVELOCITY IMPACT; SPACE SHUTTLES; LEADING EDGES; IMPACT TESTS; TEST FACILITIES; SPACE DEBRIS; ULTRASONICS; MICROMETEOROIDS; DETECTION; SPALLING; WAVEFORMS; SIMULATION; KINETIC ENERGY; DATA PROCESSING
Download or read book Hypervelocity Impact Hvi Volume 1 General Introduction written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2019-01-14 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: During 2003 and 2004, the Johnson Space Center's White Sands Testing Facility in Las Cruces, New Mexico conducted hypervelocity impact tests on the space shuttle wing leading edge. Hypervelocity impact tests were conducted to determine if Micro-Meteoroid/Orbital Debris impacts could be reliably detected and located using simple passive ultrasonic methods. This volume contains an executive summary, overview of the method, brief descriptions of all targets, and highlights of results and conclusions. Gorman, Michael R. and Ziola, Steven M. Langley Research Center NASA/CR-2007-214885/VOL1
Download or read book Hypervelocity Impact Physics written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-25 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: All large spacecraft are susceptible to impacts by meteoroids and orbiting space debris. These impacts occur at extremely high speed and can damage flight-critical systems, which can in turn lead to a catastrophic failure of the spacecraft. Therefore, the design of a spacecraft for a long-duration mission must take into account the possibility of such impacts and their effects on the spacecraft structure and on all of its exposed subsystems components. The work performed under the contract consisted of applied research on the effects of meteoroid/space debris impacts on candidate materials, design configurations, and support mechanisms of long term space vehicles. Hypervelocity impact mechanics was used to analyze the damage that occurs when a space vehicle is impacted by a micrometeoroid or a space debris particle. An impact analysis of over 500 test specimens was performed to generate by a hypervelocity impact damage database. Schonberg, William P. and Bean, Alan J. and Darzi, Kent Unspecified Center NASA-CR-4343, NAS 1.26:4343 NAS8-36955...
Download or read book Simulation of Hypervelocity Impact Effects on Reinforced Carbon Carbon written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-11 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spacecraft operating in low earth orbit face a significant orbital debris impact hazard. Of particular concern, in the case of the Space Shuttle, are impacts on critical components of the thermal protection system. Recent research has formulated a new material model of reinforced carbon-carbon, for use in the analysis of hypervelocity impact effects on the Space Shuttle wing leading edge. The material model has been validated in simulations of published impact experiments and applied to model orbital debris impacts at velocities beyond the range of current experimental methods. The results suggest that momentum scaling may be used to extrapolate the available experimental data base, in order to predict the size of wing leading edge perforations at impact velocities as high as 13 km/s.Park, Young-Keun and Fahrenthold, Eric P.Johnson Space CenterHYPERVELOCITY IMPACT; CARBON-CARBON COMPOSITES; LEADING EDGES; SPACE SHUTTLES; SPACE DEBRIS; THERMAL PROTECTION; THREE DIMENSIONAL MODELS; FINITE ELEMENT METHOD
Download or read book Hypervelocity Impacts in Space and Planetology written by J. A. M. McDonnell and published by Elsevier Science & Technology. This book was released on 1997 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paperback. This publication contains 36 papers taken from three symposia of COSPAR Scientific Commission B, which took place during the Thirty-first COSPAR Scientific Assembly, held in Birmingham, UK, during July 1996. The major areas covered by the symposia and which form this volume are as follows: the particulate space environment, problems in comparative planetology, and laboratory investigations relevant to planetology. Papers on the particulate space environment reflect advances in evaluation of the space environment, the deeper understanding of hypervelocity impact phenomena, and hold interest for the understanding of the natural environment and space debris. Papers on problems in comparative planetology investigate differences in impact melting on the surfaces of different planets, the geology of Alba Petra on Mars and attempts to interpret the geology of that region in terms of the geology of corona structures found on Venus. Papers concerning la
Download or read book Empirical Predictions of Hypervelocity Impact Damage to the Space Station written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-02 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: A family of user-friendly, DOS PC based, Microsoft BASIC programs written to provide spacecraft designers with empirical predictions of space debris damage to orbiting spacecraft is described. The spacecraft wall configuration is assumed to consist of multilayer insulation (MLI) placed between a Whipple style bumper and the pressure wall. Predictions are based on data sets of experimental results obtained from simulating debris impacts on spacecraft using light gas guns on Earth. A module of the program facilitates the creation of the data base of experimental results that are used by the damage prediction modules of the code. The user has the choice of three different prediction modules to predict damage to the bumper, the MLI, and the pressure wall. One prediction module is based on fitting low order polynomials through subsets of the experimental data. Another prediction module fits functions based on nondimensional parameters through the data. The last prediction technique is a unique approach that is based on weighting the experimental data according to the distance from the design point. Rule, W. K. and Hayashida, K. B. Marshall Space Flight Center ...
Download or read book Radio frequency Emissions from Hypervelocity Impacts on Charged Spacecraft written by Andrew Michael Nuttall and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The space environment is a complex interactive system that deals with the dynamic processes and effects that can occur above the protective cocoon of Earth's atmosphere. Many extreme conditions found in space can pose significant mechanical and electrical risks to spacecraft systems. Space truly is an area of extremes, where spacecraft in orbit around Earth are immersed in the plasmasphere, where solar weather shapes our magnetosphere, and where meteoroids and asteroids careen past spacecraft at hypervelocity shock inducing speeds. We study these phenomena and others to understand how best to design spacecraft and missions to minimize the risks and hazards they are exposed to while operating in this extreme environment. The specific focus of this research is on the effects and hazards generated by collisions between electrically charged spacecraft and hypervelocity impactors. Spacecraft in orbit around Earth can naturally accrue strong surface charging conditions from the high energy electron populations that exist in regions of Earth's plasmasphere. We focus on the effects that occur when these strong spacecraft charging conditions coincide with hypervelocity impacts from meteoroid and orbital debris collisions with spacecraft. The strong shock waves that are generated from hypervelocity impacts compress, heat, and ionize the affected media and produce a plasma at the site of impact. The plasma formation process is predominately an effect of impact velocity and can persist across impactors of all sizes and masses. This plasma acts as a conduit for many different unwanted electrical phenomena. This thesis strives to understand the potential for hazardous radio-frequency electromagnetic pulses to be emitted from the impact plasma when impacts occur on electrically biased spacecraft surfaces. This research is motivated in part by case studies of spacecraft electrical subsystem failures during peak meteoroid shower activity. The expansion and evolution of a hypervelocity impact plasma and its potential to emit radio-frequency electromagnetic pulses is driven in large part by the initial conditions of the impact event and the boundary conditions imposed by the space environment and the charged spacecraft surfaces. This thesis presents novel research on the high energy shock physics that describe the formation of the initial impact plasma, with a specific focus on how material properties and impact conditions affect the thermodynamic states of the shocked media. Following the formation of the impact plasma we show how the expansion process in the presence of a strong negative external electric field can lead to conditions where the bulk of the plasma's electrons are accelerated away from the spacecraft. This bulk acceleration creates a wide-band radio-frequency emission which scales with the amount of plasma produced, the plasma temperature, and the bias conditions on the spacecraft. We corroborate these findings with experimental campaigns at electrostatic accelerator and light gas gun impact facilities. In these experiments we observe for the first time wide-band RF emissions from hypervelocity impacts with charged surfaces. A scaling analysis of the emission strength shows that spacecraft can be exposed to wide-band emissions in excess of $\SI{1}{\watt}$ effective isotropic radiated power for high energy collisions. These emission strengths, which are many orders of magnitude outside of the expectation on spurious emissions and radio-frequency interference, represent a risk for sensitive spacecraft electronics.
Download or read book Orbital Debris written by National Research Council and published by National Academies Press. This book was released on 1995-07-07 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the beginning of space flight, the collision hazard in Earth orbit has increased as the number of artificial objects orbiting the Earth has grown. Spacecraft performing communications, navigation, scientific, and other missions now share Earth orbit with spent rocket bodies, nonfunctional spacecraft, fragments from spacecraft breakups, and other debris created as a byproduct of space operations. Orbital Debris examines the methods we can use to characterize orbital debris, estimates the magnitude of the debris population, and assesses the hazard that this population poses to spacecraft. Potential methods to protect spacecraft are explored. The report also takes a close look at the projected future growth in the debris population and evaluates approaches to reducing that growth. Orbital Debris offers clear recommendations for targeted research on the debris population, for methods to improve the protection of spacecraft, on methods to reduce the creation of debris in the future, and much more.
Download or read book Hypervelocity Impacts in Space and Planetology written by COSPAR. Scientific Commission B. B0.8 Symposium and published by . This book was released on 1997 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Protecting the Space Station from Meteoroids and Orbital Debris written by Division on Engineering and Physical Sciences and published by National Academies Press. This book was released on 1997-02-02 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hypervelocity Impact Analysis by the Method of Characteristics written by Richard Madden and published by . This book was released on 1969 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: A computer method has been developed for the analysis of the initial hydrodynamic phase of hypervelocity impact. The method is based on solving the inviscid, non heat-conducting, unsteady fluid dynamic equations in cylindrical coordinates by utilizing an approach based on the method of characteristics. The method has been used to generate an operational computer program applicable to the impact of an infinitely long right circular cylinder striking a semi-infinite target of the same material. The projectile is assumed to be traveling parallel to its axis of symmetry, and the target is initially at rest. Results are presented for the pressure and velocity fields at various times following the impact. The pressure fields are compared with the pressure fields calculated from an existing hydrodynamic analysis.
Download or read book Hypervelocity Impact Hvi Volume 2 Wle Small Scale Fiberglass Panel Flat Multi Layer Targets A 1 A 2 and B 1 written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-22 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: During 2003 and 2004, the Johnson Space Center's White Sands Testing Facility in Las Cruces, New Mexico conducted hypervelocity impact tests on the space shuttle wing leading edge. Hypervelocity impact tests were conducted to determine if Micro-Meteoroid/Orbital Debris impacts could be reliably detected and located using simple passive ultrasonic methods. The objective of Targets A-1, A-2, and B-2 was to study hypervelocity impacts through multi-layered panels simulating Whipple shields on spacecraft. Impact damage was detected using lightweight, low power instrumentation capable of being used in flight. Gorman, Michael R. and Ziola, Steven M. Langley Research Center HYPERVELOCITY IMPACT; GLASS FIBERS; PANELS; LEADING EDGES; SIMULATION; WINGS; TARGETS; IMPACT TESTS; SPACE DEBRIS; DETECTION; SIGNAL TRANSMISSION; METEORITE COLLISIONS; WAVEFORMS; KINETIC ENERGY; LINEARITY; ELECTROMAGNETIC INTERFERENCE; TEST FACILITIES
Download or read book Hypervelocity Impact Testing of the Space Station Utility Distribution System Carrier written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-08 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: A two-phase, joint JSC and McDonnell Douglas Aerospace-Huntington Beach hypervelocity impact (HVI) test program was initiated to develop an improved understanding of how meteoroid and orbital debris (M/OD) impacts affect the Space Station Freedom (SSF) avionic and fluid lines routed in the Utility Distribution System (UDS) carrier. This report documents the first phase of the test program which covers nonpowered avionic line segment and pressurized fluid line segment HVI testing. From these tests, a better estimation of avionic line failures is approximately 15 failures per year and could very well drop to around 1 or 2 avionic line failures per year (depending upon the results of the second phase testing of the powered avionic line at White Sands). For the fluid lines, the initial McDonnell Douglas analysis calculated 1 to 2 line failures over a 30 year period. The data obtained from these tests indicate the number of predicted fluid line failures increased slightly to as many as 3 in the first 10 years and up to 15 for the entire 30 year life of SSF. Lazaroff, Scott Johnson Space Center...
Download or read book Ionization Associated with Hypervelocity Impact written by Joseph Fred Friichtenicht and published by . This book was released on 1963 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Physics and Chemistry of Hypervelocity Impact Signatures on Spacecraft written by Hajime Yano and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hypervelocity Impact written by Nasa Technical Reports Server (Ntrs) and published by BiblioGov. This book was released on 2013-07 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: During 2003 and 2004, the Johnson Space Center's White Sands Testing Facility in Las Cruces, New Mexico conducted hypervelocity impact tests on the space shuttle wing leading edge. Hypervelocity impact tests were conducted to determine if Micro-Meteoroid/Orbital Debris impacts could be reliably detected and located using simple passive ultrasonic methods. This volume contains an executive summary, overview of the method, brief descriptions of all targets, and highlights of results and conclusions.
