Bøger af NASA

Aerodynamic theory was not prepared to offer assistance in the early development of the airplane. The scientific community, most qualified for action at the forefront of human endeavor, often turns out in practice to be surprisingly conservative. It is recorded that Lord Rayleigh expressed "not the smallest molecule of faith in aerial navigation, except by balloon." It was not until experiments such as those of Lilienthal and Langley and the successful powered flights of the Wright brothers that correct theories for the aerodynamic action of wings were developed. Following the successful demonstrations of the Wright brothers, aerodynamic theory developed rapidly, primarily in European laboratories. These developments we associate with the names Joukowsky, Kutta, Prandtl and his students, Munk, Betz, and Von Karman. It should not be forgotten that the writings of F. W. Lanchester provide many of the physical insights that were elaborated in these mathematical theories. Throughout World War I, these developments in aerodynamic theory remained virtually unknown in the U.S. However, in the early 1920's, the U.S. National Advisory Committee for Aeronautics undertook to translate or otherwise make available important works on aerodynamic theory in the form of NACA Technical Reports, Notes, and Memoranda, and to encourage similar effort in its own laboratory. At the present time, many of these old NACA documents are no longer readily available and it seems worthwhile to collect the most important early works under the title "Classical Aerodynamics." In most cases, the theories are explained in the author's own words and often with a degree of clarity unequalled in later interpretations. R. T. Jones Senior Staff Scientist NASA-Ames Research Center June 18, 1979CONTENTSPrefaceApplications of Modern Hydrodynamics to Aeronautics L. PrandtlThe Mechanism of Fluid Resistance Th. v. Karman and H. RubachPressure Distribution on Joukowski Wings Otto BlumenthalGraphic Construction of Joukowski Wings E. TrefftzThe Minimum Induced Drag of Aerofoils Max M. Mun KThe Aerodynamic Forces on Airship Hulls Max M. MunkElements of the Wing Section Theory and of the Wing Theory Max M. MunkRemarks on the Pressure Distribution over the Surface of an Ellipsoid, Moving Translationally Through a Perfect Fluid Max M. MunkThe Inertia Coefficients of an Airship in a Frictionless Fluid H. BatemanFlow and Drag Formulas for Simple Quadrics A. F. ZahmFlow and Force Equations for a Body Revolving In a Fluid A. F. ZahmBehavior of Vortex Systems A. BetzGeneral Potential Theory of Arbitrary Wing Sections T. Theodorsen and I. E. GarrickGeneral Theory of Aerodynamic Instability and the Mechanism of Flutter Theodore Theodorsen

Discover the remarkable NASA spacecraft that have captured our imaginations for decades.

The first edition of the History of On-orbit Satellite Fragmentations was published by Teledyne Brown Engineering in August 1984 under the sponsorship of the NASA Johnson Space Center and with the cooperation of the U.S. Air Force Space Command and the U.S. Army Ballistic Missile Command. The objective was to bring together information about the 75 satellites, which had, at that time, experienced noticeable breakups. This update encompasses all known satellite fragmentations and was first published by the NASA Johnson Space Center's Orbital Debris Program Office (ODPO).AI summary:The document provides a comprehensive overview of various space debris events and their characteristics, serving as a useful resource for those interested in the topic. It covers events from 1991 to 2022, involving satellites and rocket bodies from different countries, including Transit 5B-2, Elektron 1, OPS 4412 (Transit 9), Cosmos 44 R/B, OPS 4988 (GREB 6), OPS 4682 (Snapshot), and OPS 8480 (Transit 5B-6). The document includes information on the type of satellite or rocket body involved in each event, including details on its size, shape, and major appendages, as well as information on the attitude control of each object.The document provides a history of satellite aerodynamic events, including launch dates, breakup dates, reentry dates, and additional information for various satellites. The information is presented in a table format, with each row representing a different satellite or debris object. The table includes details such as the satellite name, international designator, launch date, breakup date, reentry date, debris cataloged, apogee, perigee, inclination, and additional information.The document also discusses the RORSAT program, which involved Soviet satellites with nuclear reactors that were ejected into a higher storage orbit, resulting in the venting of sodium-potassium coolant. The document provides a list of coolant objects cataloged as of May 2022. The document also discusses spurious associations with fragmentation events and the importance of conducting analyses with complete satellite element set data.Overall, the document provides a comprehensive overview of various space debris events and their impact on space exploration and satellite operations. It serves as a reminder of the need for continued research and development to address the challenges posed by space debris and other anomalies.This book is annotated by Nimble AI and includes a Foreword by Cincinnatus [AI] a variety of pithy, opinionated abstracts including scientific style, tldr, tldr one word, Explain It to Me Like I'm Five Years Old, and Action Items; tools for viewpoint diversity such as Dissents, Red Team Critiques, and MAGA Perspectives; and a recursive summary with synopsis.

As we increase utilization of the ISS as a National Laboratory, now is the time for investigators to propose ways to use both existing and new research and to make discoveries unveiling new knowledge about nature that could not be defined using traditional approaches on Earth.NASAs Physical Sciences Research Program conducts fundamental and applied physical sciences research, with the objective of enabling exploration and pioneering scientific discovery. NASAs experiments in the various disciplines of physical science reveal how physical systems respond to the near absence of gravity. They also reveal how other phenomena that have a small influence on physical systems in Earth's gravity can dominate system behavior in space.Not only are we using the ISS to perform investigations, we are also taking the results from these investigations and making them available to researchers via open data. The PSI system (https: //psi.nasa.gov) allows researchers to access the data from physical sciences investigations, most of which have been performed on the ISS

Notice: Be sure the version you are buying has the words Full Color Version in the title. Other versions are in grayscale.Hardcover in full-color - ISBN 9781680920895Paperback in full-color - ISBN 9781680920901In 1995, the NASA Systems Engineering Handbook (NASA/SP-6105) was initially published to bring the fundamental concepts and techniques of systems engineering to the National Aeronautics and Space Administration (NASA) personnel in a way that recognized the nature of NASA systems and the NASA environment. Since its initial writing and its revision in 2007 (Rev 1), systems engineering as a discipline at NASA has undergone rapid and continued evolution. This revision (Rev 2) of the Handbook maintains that original philosophy while updating the Agency's systems engineering body of knowledge, providing guidance for insight into current best Agency practices, and maintaining the alignment of the Handbook with the Agency's systems engineering policy. The update of this Handbook continues the methodology of the previous revision: a top-down compatibility with higher-level Agency policy and a bottom-up infusion of guidance from the NASA practitioners in the field. This approach provides the opportunity to obtain best practices from across NASA and bridge the information to the established NASA systems engineering processes and to communicate principles of good practice as well as alternative approaches rather than specify a particular way to accomplish a task. The result embodied in this Handbook is a top-level implementation approach on the practice of systems engineering unique to NASA.

The Saturn System Through The Eyes Of Cassini is printed in full-color on 70-pound paper.The Cassini-Huygens mission has revolutionized our knowledge of the Saturn system and revealed surprising places in the solar system where life could potentially gain a foothold-bodies we call ocean worlds. Since its arrival in 2004, Cassini-Huygens has been nothing short of a discovery machine, captivating us with data and images never before obtained with such detail and clarity. Cassini taught us that Saturn is a far cry from a tranquil lone planet with delicate rings. Now, we know more about Saturn's chaotic, active, and powerful rings, and the storms that rage beneath. Images and data from Saturn's moons Titan and Enceladus hint at the possibility of life never before suspected. The rings of Saturn, its moons, and the planet itself offer irresistible and inexhaustible subjects for intense study. As the Cassini mission comes to a dramatic end with a fateful plunge into Saturn on Sept. 15, 2017, scientists are already dreaming of going back for further study.