http://smartech.gatech.edu/handle/1853/8012 Search the Channel search http://smartech.gatech.edu/simple-search http://smartech.gatech.edu/handle/1853/8034 Title: Systems Engineering Principles Applied to Basic Research and Development <br/> <br/>Authors: Anderson, Norman C.; Nolte, William <br/> <br/>Abstract: Systems engineering principles and processes have grown out of the need to effectively manage complex programs, many of them for the acquisition of operational military systems. These multi-billion dollar programs truly benefit from the application of structured systems engineering principles, and the supporting processes have been finetuned to maximize their benefit in a requirements driven environment. Research and development efforts, on the other-hand, have typically avoided application of structured processes, primarily due to a perception that such structure inhibits the creative processes that are so crucial to the discovery and development of new technologies. This paper proposes that systems engineering principles and creative discovery are not mutually exclusive environments, and that, in fact, appropriately tailored systems engineering processes can enable and enhance scientific discovery. An example of this concept will be presented for the principles of risk management, including application to basic research, applied research and development, and technology demonstrations. <br/> <br/>Description: This conference features the work of authors from: Georgia Tech’s Space Systems Design Lab, Aerospace Systems Design Lab, School of Aerospace Engineering, Georgia Tech Research Institute; NASA’s Jet Propulsion Laboratory, Marshall Space Flight Center, Goddard Space Flight Center, Langley Research Center; and other aerospace industry and academic institutions Wed, 09 Nov 2005 22:58:59 GMT http://smartech.gatech.edu/handle/1853/8035 Title: Tactical Satellite 3: Requirements Development for Responsive Space Missions <br/> <br/>Authors: Straight, Stanley D.; Davis, Thomas M. <br/> <br/>Abstract: The Department of Defense is embarking on a broad initiative to make its space programs more responsive. There are many different views of responsive space, but common tenets include no cost and schedule growth within space programs, and space capabilities delivered directly to the operational and tactical warfighter within a theater of war. The Tactical Satellite 3 (TacSat-3) mission success criteria are unique integration of program management objectives of cost and schedule and technical objectives. TacSat-3 will demonstrate a Hyperspectral Imaging capability direct to the tactical warfighter within 10 minutes of a collection opportunity. Central to providing this capability direct to the warfighter is fielding it in a responsive manner. Responsiveness demands a program structure and system design where cost and schedule are primary over mission performance to some minimum level. To be successful, the TacSat-3 program has developed requirements and mission success criteria which intimately link the cost and schedule to all aspects of requirements. The fundamental basis is the development of mission success criteria which are measurable, but allow for sufficient flexibility to meet aggressive cost and schedule constraints. Several examples of requirements trades are given. <br/> <br/>Description: This conference features the work of authors from: Georgia Tech’s Space Systems Design Lab, Aerospace Systems Design Lab, School of Aerospace Engineering, Georgia Tech Research Institute; NASA’s Jet Propulsion Laboratory, Marshall Space Flight Center, Goddard Space Flight Center, Langley Research Center; and other aerospace industry and academic institutions Wed, 09 Nov 2005 22:58:59 GMT http://smartech.gatech.edu/handle/1853/8036 Title: XSS-10 Mission Results and Lessons Learned <br/> <br/>Authors: Davis, Thomas M.; Melanson, David <br/> <br/>Abstract: The Air Force Research Laboratory established the Micro-Satellite Technology Development Program (XSS series of flight demonstrations) to leverage micro-satellite technologies with the aim of providing solutions to Air Force future space mission capabilities. XSS-10 was the first in this series and was intended to demonstrate key operational concepts and technologies relating to close-in satellite inspection operations. The XSS-10 program began in December 1997 and launched from Cape Canaveral on 29 January 2003 attached to the second stage of a Delta II. Eleven orbits later the XSS-10 micro-sat ejected from the orbiting Delta second stage and successfully completed a brief series of semi-autonomous maneuver and inspection operations using the Delta second stage as the RSO. The mission objectives of XSS-10 were to demonstrate autonomous navigation, proximity operations, and inspection of a Resident Space Object (RSO). XSS-10, a 31 kilogram micro-satellite launched as a secondary on a Delta II expendable launch vehicle carrying a GPS satellite. XSS-10 was equipped with a visible camera, a star sensor, GPS receiver and a mini SGLS system, all specially built for this program. In addition, a visible camera was also mounted on the second stage to observe the release of the microsatellite and observe its maneuvers. The XSS-10 micro satellite was released from the Delta II second stage after the GPS satellite was released. Operating autonomously, on a preplanned course, XSS-10 performed its mission of navigating around the Delta II second stage. Autonomously navigating around the second stage, at preplanned positions, the microsatellite took images of the second stage and sent them back in real time. During these demonstrations, XSS-10 demonstrated responsive checkout of the microsatellite and all of its subsystems, autonomous navigation on a preplanned course and a variety of algorithms and mission operations that are critical for future mission operations. This paper will discuss the results of the mission and post mission analysis of the XSS-10 space flight. <br/> <br/>Description: This conference features the work of authors from: Georgia Tech’s Space Systems Design Lab, Aerospace Systems Design Lab, School of Aerospace Engineering, Georgia Tech Research Institute; NASA’s Jet Propulsion Laboratory, Marshall Space Flight Center, Goddard Space Flight Center, Langley Research Center; and other aerospace industry and academic institutions Wed, 09 Nov 2005 22:58:59 GMT http://smartech.gatech.edu/handle/1853/8037 Title: Design and Systems Engineering of AFRL's Demonstration and Sciences Experiment <br/> <br/>Authors: Cohen, Dan; Spanjers, Gregory; Winter, James; Ginet, Gregory; Dichter, Bronislaw; Adler, Aaron; Tolliver, Martin <br/> <br/>Abstract: The Air Force Research Laboratory (AFRL) Space Vehicles Directorate has developed the Demonstration and Science Experiments (DSX) mission to research technologies needed to significantly advance Department of Defense (DoD) capability to operate spacecraft in the harsh radiation environment of medium-earth orbits (MEO). The ability to operate effectively in the MEO environment significantly increases the DoD’s capability to field space systems that provide persistent global targeting-grade space surveillance, high-speed satellite-based communication, lower-cost GPS navigation, and protection from space weather on a responsive satellite platform. The three DSX experiments areas are: 1. Wave Particle Interaction Experiment (WPIx): Researching the physics of very-low-frequency (VLF) transmissions in the magnetosphere and characterizing the feasibility of natural and manmade VLF waves to reduce space radiation; 2. Space Weather Experiment (SWx): Characterizing and modeling the space radiation environment in MEO, an orbital regime attractive for future DoD and commercial missions; 3. Space Environmental Effects (SFx): Researching and characterizing the space weather effects on spacecraft electronics and materials. DSX uses a modular design that allows for launch either as a primary satellite on a conventional launcher, such as a Minotaur, or as a secondary payload on a larger rocket, such as the Evolved Expendable Launch Vehicle (EELV). An overview of the DSX spacecraft design, requirements, systems engineering approach, bus subsystems, payload designs, and experiments will be described. <br/> <br/>Description: This conference features the work of authors from: Georgia Tech’s Space Systems Design Lab, Aerospace Systems Design Lab, School of Aerospace Engineering, Georgia Tech Research Institute; NASA’s Jet Propulsion Laboratory, Marshall Space Flight Center, Goddard Space Flight Center, Langley Research Center; and other aerospace industry and academic institutions Wed, 09 Nov 2005 22:58:59 GMT