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Information Theory Analysis Of The Solar Wind Magnetic Structures For Space Weather Prediction, Katherine Holland

Doctoral Dissertations and Master's Theses

Forecasting space weather at Earth is highly complicated, because of the limited measurements of the dynamic processes in the Sun that span multiple temporal, spatial, and energy-scales. The solar wind is a highly structured, multi-scale, evolving plasma and consists of coronal mass ejections (CMEs), stream interaction regions (SIRs), expanding flux tubes (Borovsky, 2008), and interplanetary magnetic field (IMF) discontinuities and fluctuations. The aim of this research is to improve our understanding of the evolution and dissipation of different scale-size solar wind magnetic structures as they move from the Sun-Earth Lagrange point 1 (L1) to Earth's bow shock and, ultimately, to …

Assessing Impacts Of Decentralizing Airpower Command And Control, Allen Goodwin Peck

Doctoral Dissertations and Master's Theses

Centralized control is a fundamental tenet of joint airpower doctrine, yet there are operational situations in which some degree of decentralization may be appropriate. The purpose of this research was to quantitatively assess the impacts of decentralizing the command and control (C2) of airpower under varying operational conditions. The research used the experimental method to test hypotheses regarding decentralization of control. JAEX, a stochastic, attrition-based Blue-versus-Red war gaming model, generated the required data.

The mean difference between JAEX outcomes under centralized control and outcomes under decentralized control constituted the dependent variable for each experiment. The independent variables were the operational …

QurʾĀn And Sunna Or The Madhhabs?: A Salafi Polemic Against Islamic Legal Tradition, Emad Hamdeh

Publications

The Albanian scholar Muḥammad Nāṣir al-Dīn al-Albānī (d. 1999) established a unique type of Salafism, a movement whose adherents follow a puritanical model of Muslim creed, exegesis, and conduct that is critical of madhhab Traditionalism. In this article I present an annotated translation of an audio lecture in which Albānī attempted to defend Salafism against its anti-madhhab image. I shed light on the religious and social climate that played a role in triggering Albānī’s disdain for Traditionalism and led him to discredit madhhab Traditionalist fiqh and replace it with his own interpretation of the jurisprudential requirements of Islamic scripture. Among …

Overview Of Instruments For Investigating Dust Interactions On Small Solar System Bodies By Landers And Rovers, Ryan L. Kobrick, Jeffrey A. Hoffman, Kenneth W. Street Jr., Douglas L. Rickman

Publications

Small Solar System bodies such as asteroids, comets and Mars' moons Phobos and Deimos have relatively unknown regolith environments. It is hypothesized that dust preserved in the regolith on the surfaces will have similar mechanical properties to lunar dust because of similar formation processes from micrometeoric bombardment, low relative gravity for slow settling times, and virtually no weathering because there is no atmosphere.

Study Of An Aviation Design Supportability Course For Engineering And Technology, J. Mark Thom, Tracy Gerbracht

Journal of Aviation/Aerospace Education & Research

The following reports on a study examining a typical aeronautical/aviation engineering senior design course, and examines how an aviation technology based course applying the elements of logistics support analysis might be taught concurrently. The study examines the content of a typical senior engineering design course, the required content for a technology based logistics support analysis course, and analyzes the overlaps. Over the course of the study the methods and limitations of engineering design were observed by the technology researchers and were used to formulate the content of an aviation logistics course.

Project Prometheus: Program Overview, Alan Newhouse

Space Congress® Proceedings

No abstract provided.

Paper Session I-B - Conceptual Design Of A Cargo Lander For The First Lunar Outpost, Michael J. Wright

Space Congress® Proceedings

The Space Exploration Initiative (SEI) encompasses a series of exploratory and colonization missions that will expand human presence to the Moon and Mars via an evolutionary program, whereby each succeeding phase builds on and compliments the previous efforts. The first phase in this initiative, as defined by president Bush, is to "return to the Moon, this time to stay". In order to accomplish this goal by the turn of the century the First Lunar Outpost (FLO) strategy has been proposed. In support of this mission scenario, NASA Marshall Space Flight Center (MSFC) has designed a habitation module and cargo lander …

Paper Session Iii-B - Journey Into Tomorrow: Developing Nuclear Propulsion For The Space Exploration Initiative, Kathleen F. Harer, Scott R. Graham, Gary L. Bennett

Space Congress® Proceedings

The Space Exploration Initiative (SEI) calls for a return to the Moon and carrying out human exploration of Mars. Trips to Mars involve considerably more time and more complex operations than trips to the Moon; hence, there is a keen interest in developing better space transportation systems. Nuclear propulsion, either nuclear thermal propulsion (NTP) or nuclear electric propulsion (NEP), offers the potential of reduced trip times and/or reduced mass into low Earth orbit, compared to chemical propulsion systems . In addition, the greater performance benefits of nuclear propulsion can provide the added margin for greater operational flexibility, including mission abort …

Paper Session Ii-C - Pioneer 10 Interstellar Studies, P. Dyal

Space Congress® Proceedings

The Pioneer 10 spacecraft may soon be the first man-made object to leave our solar system and penetrate the heliospheric boundary into interstellar space. Scientific investigators on this mission eagerly anticipate the opportunity to measure the physical processes occurring in the terminal boundary region and in the unexplored space known as the interstellar medium by astronomers who have studied it remotely with telescopes for many years. This paper is a descriptive overview of the Pioneer 10 mission and the dominant physical processes that have been discovered since its 1972 launch into our heliosphere and those processes that we expect to …

Paper Session Ii-B - Simulating Shuttle And Derivative Vehicle Processing At Kennedy Space Center, Soheil Khajenoori, Gregory L. Heileman

Space Congress® Proceedings

Rockwell International Space Systems Division is teamed with the University of Central Florida on a research project to develop an automated simulation system to model ground processing scenarios for the Shuttle and Shuttle-derived vehicles. This simulation system is necessary to evaluate launch site facilities requirements and estimate life-cycle costs of future space programs.

This paper presents the results of initial simulation modeling of the orbiter processing critical path at Kennedy Space Center (KSC). An approach is presented for the planned capabilities to simulate mixed fleet processing and to perform sensitivity, capacity, cost, and risk analyses. Potential expert system applications for …

Paper Session Iii-B - The Prospector's Proposal: Research Advancing Survivability Through Resource Options, Devin C. Walters, Howard Clark, Alex Cos, Matt Dubois, D. C. Conroy, Doug Fullingim, Wim Libby, Joseph C. Medlin, Vincent Reyna

Space Congress® Proceedings

As a group of nine Astronautical Engineering majors, we have identified a problem of great concern. It involves the scarcity of strategic materials and the possibility that our supply will be cut off. The Prospector's Proposal is our solution. This proposal involves a prospecting mission to the asteroid belt, specifically Ceres. Using heavy lift vehicles, we will put our spacecraft into orbit where it will be assembled. A nuclear drive will provide propulsion for the unmanned probe. A landing craft will transport a mobile unit to the surface. This unit will collect samples that may contain sufficient quantities of the …

Paper Session Iii-B - Potential European Involvement In The Us Pathfinder Program, Rudi G. Reichert

Space Congress® Proceedings

In conjunction with a long-range space programme planning also in Europe ideas exist for planetary exploratory missions, such as for Mars and the necessary infrastructure and technologies, required. Of course, this can only be realized in international cooperation as proposed by NASA with the pathfinder initiative.

Europe has been engaged in a number of unmanned scientific missions, some of them still have to be flown - such as Galileo, Ulysses, and/or Cassini - and further unmanned explorations of Mars will still have to be done as well as experiences to be gained on longer-duration stays of man in space before …

Paper Session Iii-B - A Lunar Orbiting Node In Support Of Missions To Mars, A. Butterfield, J. R. Wrobel, L. B. Garrett

Space Congress® Proceedings

Future Mars missions may use lunar-derived oxygen as a propellant for interplanetary transit. A man-tended platform as a Node in low lunar orbit offers a site for storage and transfer of lunar oxygen to the transport vehicles as well as rendezvous and transfer for lunar-bound cargo and crews. In addition, it could provide an emergency safe-haven for a crew awaiting rescue. A conceptual design study yielded an approximate size for the platform needed to support typical oxygen transfer rates which were based upon NASA studies of Mars missions. The Node consists of a gravity gradient stabilized lunar orbiting tank-farm with …

Paper Session Iii-B - A Transportation System For A Lunar Base, Andrew J. Petro

Space Congress® Proceedings

This paper will discuss the conceptual design of a transportation system for supporting a permanent base on the surface of the Moon, early in the Twenty-first Century. There is a brief description of a particular lunar base development scenario from which the requirements for the transportation system were derived. The lunar base concept was developed as part of the Lunar Base Systems Study at the Johnson Space Center.

The transportation system consists of a node in low Earth orbit, an orbital transfer vehicle (OTV), and a landing craft. The OTV provides transportation between Earth orbit and lunar orbit. The landing …

1989 Twenty-Sixth Space Congress Preliminary Program, Canaveral Council Of Technical Societies

Space Congress Programs

No abstract provided.

1988 Twenty-Fifth Space Congress Program, Canaveral Council Of Technical Societies

Space Congress Programs

No abstract provided.

Future Military Spacecraft Power Systems, Robert R. Barthelemy

Space Congress® Proceedings

During the past several years, a number of military space mission studies have concluded with interesting new information on the future needs and directions of military spacecraft power systems. In all cases, the trend to higher power level, for continuous as well as pulsed requirements, is clear. Although precise dates are impossible to define at this time, military spacecraft of the next twenty years will require steady state electrical power in the range of 10 to 100 kilowatts with pulsing capabilities in the megawatt region. As such, the major thrust of the DOD space power technology program focuses on the …

Design, Development And Verification Of Life Sciences Experiments, Clay W. Fulcher

Space Congress® Proceedings

A prime objective of the Life Sciences Flight Experiments Program is to conduct a continuing and coordinated program of biomedical research in space which supports the goals of NASA's Life Sciences. To accomplish this objective NASA has developed an effective NASA-industry- academic team to design, develop, test, and operate Life Sciences payloads for Space Shuttle flights. Ames Research Center, the prime NASA center responsible for development of nonhuman life sciences experiments, works closely with Lyndon B. Johnson Space Center and NASA Headquarters' Life Sciences Division in the development of scientifically balanced payloads. Johnson Space Center has responsibility for human experiment …

Preparations In Europe For A Possible Participation In The Post Apollo Program With A Space Tug, Dipling. H. Hoffmann

Space Congress® Proceedings

When in October 1969 the NASA Administrator Dr. Thomas Paine announced in an address to the European Committee of Minister Alternates the invitation of the United States of America to Europe to participate in the Post Apollo Space Program, there were not then many technical details known about this program. The interested European Nations, however, in considering this invitation soon realised that such a participation would only be meaningful if, by their standards, a large amount of money were made available in order to achieve a certain partnership with the United States. This fact, however, could mean the sacrifice of …

Transoceanic Traffic Control And Operational Support Using Satellite Systems, John H. Craigie

Space Congress® Proceedings

An analysis has been performed which relates the operational requirements of the projected civil, air, and marine traffic in the North Atlantic Ocean Area in the post-1975 era to the projected communications, position determination, and satellite technology. The result is a synthesis of a system composed of satellites, ground stations, and hardware in various user craft which provides transoceanic traffic control as well as a wide variety of operational support services for aviation and marine craft. Requirements for communications, surveillance, and navigation associated with air traffic control as well as aviation and marine advisory services and company communications, marine navigation, …

Nerva Development Status, C. M. Rice, W. H. Esselman

Space Congress® Proceedings

During the past few years significant accomplishments have been made in nuclear rocket development. It is the purpose of this paper to review this progress and to highlight the present status of the NERVA engine development. NERVA is part of the ROVER nuclear rocket engine program which was initiated at the Los Alamos Scientific Laboratory in 1955. Figure 1 traces the key accomplishments of this development program from the beginning through the demonstration of feasibility, to the present phase of advancing the technology and extending performance.

The initial progress achieved by Los Alamos on the conceptual reactor design and fuel …

Manned Planetary Exploration Capability Using Nuclear Pulse Propulsion, Paul R. Shipps

Space Congress® Proceedings

This paper discusses the capability of nuclear pulse propulsion in performing manned missions to Mars and other planets using a single-stage vehicle. Recently declassified descriptive data on a 10-meter-diam nuclear pulse propulsion module design (Saturn V compatible) is summarized and a typical complete exploration vehicle employing the module is described. The specific impulse of the propulsion module is 2,500 sec, its dry weight 200,000 Ib.

The mission versatility of this single vehicle design is emphasized. The same propulsion module, and essentially the same overall vehicle design, are shown capable of performing single-stage missions requiring velocity increments ranging from under 40,000 …

Space Station And Space Cabin Testing, Richard A. Passman, Carl R. Cording

Space Congress® Proceedings

For Earth Orbiting Space Stations neither expandable, extensible, nor converted propellant tanks appear as suitable for manned operations as a specially designed cabin regardless of the mission to be performed. While an interesting possibility, use of converted propellant tanks offer little advantage when viewed in the light of the overall space station system problem.

During the past two years studies have been conducted in some depth of the cabins associated with space station systems suitable for launch by Titan III C, Saturn IB, and Saturn 5 boosters. These studies have considered various crew complements, supporting ferries f and the effects …