scholarly journals Sensor Needs for Control and Health Management of Intelligent Aircraft Engines

Author(s):  
Donald L. Simon ◽  
Sanjay Garg ◽  
Gary W. Hunter ◽  
Ten-Huei Guo ◽  
Kenneth J. Semega

NASA and the U.S. Department of Defense are conducting programs which support the future vision of “intelligent” aircraft engines for enhancing the affordability, performance, operability, safety, and reliability of aircraft propulsion systems. Intelligent engines will have advanced control and health management capabilities enabling these engines to be self-diagnostic, self-prognostic, and adaptive to optimize performance based upon the current condition of the engine or the current mission of the vehicle. Sensors are a critical technology necessary to enable the intelligent engine vision as they are relied upon to accurately collect the data required for engine control and health management. This paper reviews the anticipated sensor requirements to support the future vision of intelligent engines from a control and health management perspective. Propulsion control and health management technologies are discussed in the broad areas of active component controls, propulsion health management and distributed controls. In each of these three areas individual technologies will be described, input parameters necessary for control feedback or health management will be discussed, and sensor performance specifications for measuring these parameters will be summarized.

2019 ◽  
Vol 106 (2) ◽  
pp. 5-5
Author(s):  
Kathleen D. Sanz
Keyword(s):  

2013 ◽  
pp. 117-125
Author(s):  
Andrea Matkó

The connection between organizational culture and leadership has been examined by several researchers (Schein, Schmircik, Bass) and it is proven that there is a link between them. The leader shapes the organizational culture and at the same time the organizational culture shapes the leader too. The middle managers of local governments place the major emphasis on the dimension of goal orientation for the future. From the leadership perspective they find charismatic, goal and team oriented leadership necessary for the future. The local governments have to answer the challenges of the rapidly changing environment. Quick responses and adjustments are only possible if the leader possesses a clear future vision and not only sets short-term goals but plans for the future and estimates the necessities on the long run. It is important to have a leadership with utmost dedication to the organization and to the objectives of the organization. The leaders must raise the interests of the employees, involve them in the process of setting goals and in finding ways to meet those goals, and that the employees should no longer strive to realize their own personal ambitions but focus on the common objectives. This brought transformational leadership to light. The leader establishes and shapes the organizational culture but the individuals and teams working for the organization have impact on the organizational culture as well. This becomes apparent in the organizational culture as middle managers would place the major emphasis on performance orientation. Performance orientation is a dominant motivation based on excellence, hard work, pre-calculated risk, fore planning, goal orientation and regular feedback, which shapes the leadership too, as the leader has to change as well, in order to run the organization. Scheins’ standpoint reflects the best the relationship between the organizational culture and the leadership. Schein claims that organizational culture and leadership are interwoven phenomena, as the leader shapes the culture but after a while the organizational culture itself shapes the leader too.


2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Hai-Kun Wang ◽  
Yi Cheng ◽  
Ke Song

The remaining useful life estimation is a key technology in prognostics and health management (PHM) systems for a new generation of aircraft engines. With the increase in massive monitoring data, it brings new opportunities to improve the prediction from the perspective of deep learning. Therefore, we propose a novel joint deep learning architecture that is composed of two main parts: the transformer encoder, which uses scaled dot-product attention to extract dependencies across distances in time series, and the temporal convolution neural network (TCNN), which is constructed to fix the insensitivity of the self-attention mechanism to local features. Both parts are jointly trained within a regression module, which implies that the proposed approach differs from traditional ensemble learning models. It is applied on the Commercial Modular Aero-Propulsion System Simulation (C-MAPSS) dataset from the Prognostics Center of Excellence at NASA Ames, and satisfactory results are obtained, especially under complex working conditions.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Andrea Aparecida da Costa Mineiro ◽  
Rita de Cássia Arantes ◽  
Kelly Carvalho Vieira ◽  
Cleber Carvalho Castro ◽  
Eduardo Gomes Carvalho ◽  
...  

Purpose This study aims to analyze the practices and relationships of companies established in Science and Technology Parks (STPs) as drivers of the quadruple and quintuple helix (QQH) and the determinants for aligning with the future vision of STPs. Design/methodology/approach The authors conducted a survey of companies associated with consolidated STPs and used the Structural Equation Model technique to predict such relationships. Findings The results showed a positive relationship between the QQH and the Future Vision of STPs, in addition to the relevance of collectives as representatives of the quadruple helix (QH). Research limitations/implications Collectives are a recent phenomenon and require longitudinal studies on their performance in innovation environments. Practical implications Companies that are part of collectives are the actors of the QH. Social implications The role of collectives in aligning with the future vision of STPs should be considered. Collectives reflect people’s vision and can help STPs from being a closed environment and expand their performance, with a key role in connecting innovation environments. The authors found that collectives are promising in practices related to sustainability, thus contributing to STPs with their ability to mobilize the ecosystem. Originality/value The research emphasizes the role of companies as agents of QQH in innovation environments, strengthening the increasing and distinct role of collectives in their relationships with STPs.


Author(s):  
Andrew Russell ◽  
Andy Cattermole ◽  
Ray Hudson ◽  
Sarah Banks ◽  
Andrea Armstrong ◽  
...  

Durham University has initiated a community outreach and engagement program based on an evolving multifaceted model. This article analyses the components of the model and looks at how our work at Durham has become increasingly embedded in the structures and processes of the university as it has developed. The strengths and weaknesses in what has been achieved are highlighted, as is the future vision for the further development of this innovative community-university program. Keywords Public engagement; community partnerships; employer supported volunteering; corporate social responsibility


Author(s):  
Erin Trauth ◽  
Ella R. Browning

In this study, the authors examine patient use of and feelings about wearable technologies for health attainment and management. Based on an online survey of 81 patients using wearable technologies to track and manage health, as well as interviews with three patients utilizing wearables for health management, the authors examine how wearable technologies are being used by patients to attain health, manage health, and/or prevent health issues, and what value users find in these wearable technologies. The authors also examine how such use is impacting communication between medical professionals and patients. Specifically, the authors explore how the inclusion of wearable technologies has changed the “rhetorical relationship” between patients and medical professionals. The study concludes with a discussion of the future of wearable devices in patient-medical practitioner relationships and clinical settings.


2006 ◽  
Vol 58 (08) ◽  
pp. 46-48
Author(s):  
Dennis Denney
Keyword(s):  

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