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This paper presents an educational outreach activity that utilizes a design competition to inspire pre-college students to continue their education at the university-level and enter into degree programs relating to science, engineering or mathematics (STEM). The competition was one of many activities included in TexPREP (Texas Prefreshmen Engineering Program), which involves high-achieving middle...
The consistent and reliable operation of hydraulic componentry is paramount for many systems. From spacecraft to the most basic automotive bottle jack an undetected failure can have significant consequences if not noticed in time. Many hydraulic systems have diagnostics capabilities but these are normally very limited in scope. They can detect events only related to specifically monitored components...
Achieving high reliability of military platforms is critical for reducing operating costs and increasing operational availability and combat readiness. This paper describes results of a comparative analysis of two approaches to improving platform reliability. The first is based on platform inspections (performed at specific time intervals) and replacement of parts whose remaining life is found to...
Systems required to exhibit high operational reliability often rely on some form of fault protection to recognize and respond to faults, preventing faults' escalation to catastrophic failures. Integrated system health management (ISHM) extends the functionality of fault protection to both scale to more complex systems (and systems of systems), and to maintain capability rather than just avert catastrophe...
In June 2005, Naval Surface Warfare Center (NSWC) Gas Turbine Emerging Technologies conducted testing on a general electric LM2500 gas turbine engine. This engine is the main propulsor for DDG-51 and CG-47 class United States Navy surface ships. The purpose of this testing was to induce compressor stall in order to evaluate existing algorithms for stall prediction and gather data for further algorithm...
We describe a methodology for performing materials-based prognostics for failure in electronic components. The methodology is based on results of a previous research program involving a substantial number of mechanical fatigue experiments and FE analyses investigating solder joint integrity. The component considered here is a gull-wing lead power supply chip on a DC/DC voltage converter PWB assembly...
This paper describes the development and implementation of a prototype embedded health management system for the U.S. Army HEMTT M1120A2+ vehicle. Diagnostic, advanced diagnostic and prognostic technologies were developed and implemented for four of the vehicles subsystems including the engine, transmission, load handling system and main vehicle batteries. A centralized vehicle health information...
Effectively utilizing existing on-board and at-wing data that encompasses environmental, built-in-test (BIT), vibration, and maintenance test results, can realize improved maintenance, survivability and critical failure rates via the identification of degrading components prior to critical failure. The authors have developed software to show the feasibility of onboard and at-wing prognostics using...
Electrochemical impedance measurement systems use the Bode analysis technique to characterize the impedance of an electrochemical process. It is a well established and proven technique. The battery being evaluated is excited with a current that is single frequency and its response is measured. The process is repeated over a range of frequencies of interest until the spectrum of the impedance is obtained...
The Columbia Accident Investigation Board (CAIB) report states that NASA needs to develop an organizational culture that reflects the best characteristics of a learning organization and that NASA historically has not demonstrated such characteristics. When there is a technical failure, most organizations are good at identifying the technical cause and learning not to repeat that same mistake. However,...
The commercial state-of-the-art tools for configuration managements (CM) systems are very mature for asset, hardware and software development systems. These tools are very good for tactical management for daily issues. However, strategic management and decisions also have a requirement for configuration management but unfortunately the traditional commercial off the shelf (COTS) tools are not adequate...
Matrix structures are common in highly technical organizations. The matrix structure is most defined by this characteristic: that most people in the enterprise have two bosses. One resides in the programmatic organizations that make direct contact with the enterprise's customers, and organize and manage work to meet customer expectations. The other boss lives in the line organizations, functional...
This paper describes a novel approach to business intelligence and program management for large technology enterprises like the U.S. National Aeronautics and Space Administration (NASA). Two key distinctions of the approach are that 1) standard business documents are the user interface, and 2) a "schema-less" XML database enables flexible integration of technology information for use by...
The Federal Aviation Administration forecasts that by 2015 more than 1 billion people each year will take to the skies in the United States, nearly a third more than today's number. Central to the FAA's efforts to prepare for the future is the operational evolution plan (OEP), which seeks to increase the capacity and efficiency of the National Airspace System by focusing on relieving congestion at...
In FY 2004, JPL launched an initiative to improve the way it practices systems engineering. The Lab's senior management formed the systems engineering advancement (SEA) project in order to "significantly advance the practice and organizational capabilities of systems engineering at JPL on flight projects and ground support tasks". The scope of the SEA project includes the systems engineering...
This research uses a case study to explore leverage in reducing "disconnects" in baselines across multiple organizations in a large space system development program. Disconnects, latent differences in understanding that can negatively affect the program should they remain undetected or unresolved, can jeopardize program targets for cost, schedule, performance, and quality. In addition to...
Rhea has been involved in the development, maintenance and execution of satellite test and operations procedures, both in manufacturing plants and operation environments ever since its founding in 1992. This paper describes how Rhea and ADGA are supporting ongoing standardization efforts within the European Cooperation for Space Standardization (ECSS) and the Object Management Group (OMG) to enable...
Bearing faults in momentum/reaction wheels and control moment gyros are a significant life- and performance-limiting factor in spacecraft. Even when complete failure does not occur, problems with excessive bearing torque and torque noise can drain power and negatively impact vibration sensitive instruments. The failure mechanisms in these applications and the monitoring technologies needed are significantly...
GMV, leading a European consortium, has recently been responsible for the development of SCOS-2000 Release 4.0 (SCOS-2000 R4.0). The overall objective of the project, as described in this paper, was the production of the SCOS-2000 R4.0 infrastructure mission control system for the European Space Agency. The main tasks performed are: porting of the system to new operating system versions (Linux SUSE...
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