The Experts below are selected from a list of 9234 Experts worldwide ranked by ideXlab platform
Robert D Braun - One of the best experts on this subject based on the ideXlab platform.
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Technology Readiness Level schedule risk and slippage in spacecraft design
Journal of Spacecraft and Rockets, 2008Co-Authors: Gregory F Dubos, Joseph H Saleh, Robert D BraunAbstract:Level of the system/payload under development as a principal culprit driving schedule risk and slippage. In this paper, based on data from past space programs, we analyze the relationship between Technology uncertainty and schedule risk in the acquisition of space systems and propose an analytical framework to identify appropriate schedule margins for mitigating the risk of schedule slippage. We also introduce the Technology Readiness Level schedule-risk curves to help program managers make risk-informed decisions regarding the appropriate schedule margins for a given program or the appropriate Technology Readiness Level to consider if the program’s schedule were to be exogenously and rigidly constrained. Based on our findings, we recommend that the industry adopt and develop schedule-risk curves (instead of single-schedule point estimates), that these schedule-risk curves be made available to policy- and decision-makers in acquisition programs, and that adequate schedule margins be defined according to an agreed-upon and acceptable schedule-risk Level.
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Technology Readiness Level schedule risk and slippage in spacecraft design data analysis and modeling
AIAA SPACE 2007 Conference & Exposition, 2007Co-Authors: Gregory F Dubos, Joseph H Saleh, Robert D BraunAbstract:as a principal culprit driving schedule risk and slippage. In this paper, we analyze based on data from past space programs the relationship between Technology uncertainty and schedule risk in the acquisition of space systems, and propose an analytical framework to identify appropriate schedule margins for mitigating the risk of schedule slippage. We also introduce the TRL-schedule-risk curves to help program managers make riskinformed decisions regarding the appropriate schedule margins for a given program, or the appropriate TRL to consider should the program’s schedule be exogenously and rigidly constrained. We recommend based on our findings, that the industry adopts and develops schedule risk curves (instead of single schedule point estimates), 2) that these schedule risk curves be made available to policy- and decision-makers in acquisition programs; and 3) that adequate schedule margins be defined according to an agreed upon and acceptable schedule risk Level.
Colin R. Mcinnes - One of the best experts on this subject based on the ideXlab platform.
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Solar sail science mission applications and advancement
Advances in Space Research, 2011Co-Authors: Malcolm Macdonald, Colin R. McinnesAbstract:Abstract Solar sailing has long been envisaged as an enabling or disruptive Technology. The promise of open-ended missions allows consideration of radically new trajectories and the delivery of spacecraft to previously unreachable or unsustainable observation outposts. A mission catalogue is presented of an extensive range of potential solar sail applications, allowing identification of the key features of missions which are enabled, or significantly enhance, through solar sail propulsion. Through these considerations a solar sail application-pull Technology development roadmap is established, using each mission as a Technology stepping-stone to the next. Having identified and developed a solar sail application-pull Technology development roadmap, this is incorporated into a new vision for solar sailing. The development of new technologies, especially for space applications, is high-risk. The advancement difficulty of low Technology Readiness Level research is typically underestimated due to a lack of recognition of the advancement degree of difficulty scale. Recognising the currently low Technology Readiness Level of traditional solar sailing concepts, along with their high advancement degree of difficulty and a lack of near-term applications a new vision for solar sailing is presented which increases the Technology Readiness Level and reduces the advancement degree of difficulty of solar sailing. Just as the basic principles of solar sailing are not new, they have also been long proven and utilised in spacecraft as a low-risk, high-return limited-capability propulsion system. It is therefore proposed that this significant heritage be used to enable rapid, near-term solar sail future advancement through coupling currently mature solar sail, and other, technologies with current solar sail Technology developments. As such the near-term Technology Readiness Level of traditional solar sailing is increased, while simultaneously reducing the advancement degree of difficulty along the solar sail application-pull Technology development roadmap.
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Solar sail mission applications and future advancement
2010Co-Authors: Malcolm Macdonald, Colin R. McinnesAbstract:Solar sailing has long been envisaged as an enabling Technology. The promise of open-ended missions allows consideration of radically new trajectories and the delivery of spacecraft to previously unreachable or unsustainable observation outposts. A mission catalogue is presented of an extensive range of potential solar sail applications, allowing identification of the key features of missions which are enabled, or significantly enhance, through solar sail propulsion. Through these considerations a solar sail application-pull Technology development roadmap is established, using each mission as a Technology stepping-stone to the next. Having identified and developed a solar sail application-pull Technology development roadmap, this is incorporated into a new vision for solar sailing. The development of new technologies, especially for space applications, is high-risk. The advancement difficulty of low Technology Readiness Level research is typically underestimated due to a lack of recognition of the advancement degree of difficulty scale. Recognising the currently low Technology Readiness Level of traditional solar sailing concepts, along with their high advancement degree of difficulty and a lack of near-term applications a new vision for solar sailing is presented which increases the Technology Readiness Level and reduces the advancement degree of difficulty of solar sailing. Just as the basic principles of solar sailing are not new, they have also been long proven and utilised in spacecraft as a low-risk, high-return limited-capability propulsion system. It is therefore proposed that this significant heritage be used to enable rapid, near-term solar sail future advancement through coupling currently mature solar sail, and other, technologies with current solar sail Technology developments. As such the near-term Technology Readiness Level of traditional solar sailing is increased, while simultaneously reducing the advancement degree of difficulty along the solar sail application-pull Technology development roadmap.
Gregory F Dubos - One of the best experts on this subject based on the ideXlab platform.
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Technology Readiness Level schedule risk and slippage in spacecraft design
Journal of Spacecraft and Rockets, 2008Co-Authors: Gregory F Dubos, Joseph H Saleh, Robert D BraunAbstract:Level of the system/payload under development as a principal culprit driving schedule risk and slippage. In this paper, based on data from past space programs, we analyze the relationship between Technology uncertainty and schedule risk in the acquisition of space systems and propose an analytical framework to identify appropriate schedule margins for mitigating the risk of schedule slippage. We also introduce the Technology Readiness Level schedule-risk curves to help program managers make risk-informed decisions regarding the appropriate schedule margins for a given program or the appropriate Technology Readiness Level to consider if the program’s schedule were to be exogenously and rigidly constrained. Based on our findings, we recommend that the industry adopt and develop schedule-risk curves (instead of single-schedule point estimates), that these schedule-risk curves be made available to policy- and decision-makers in acquisition programs, and that adequate schedule margins be defined according to an agreed-upon and acceptable schedule-risk Level.
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Technology Readiness Level schedule risk and slippage in spacecraft design data analysis and modeling
AIAA SPACE 2007 Conference & Exposition, 2007Co-Authors: Gregory F Dubos, Joseph H Saleh, Robert D BraunAbstract:as a principal culprit driving schedule risk and slippage. In this paper, we analyze based on data from past space programs the relationship between Technology uncertainty and schedule risk in the acquisition of space systems, and propose an analytical framework to identify appropriate schedule margins for mitigating the risk of schedule slippage. We also introduce the TRL-schedule-risk curves to help program managers make riskinformed decisions regarding the appropriate schedule margins for a given program, or the appropriate TRL to consider should the program’s schedule be exogenously and rigidly constrained. We recommend based on our findings, that the industry adopts and develops schedule risk curves (instead of single schedule point estimates), 2) that these schedule risk curves be made available to policy- and decision-makers in acquisition programs; and 3) that adequate schedule margins be defined according to an agreed upon and acceptable schedule risk Level.
Carmelina Ierardi - One of the best experts on this subject based on the ideXlab platform.
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High Technology Readiness Level Techniques for Brushless Direct Current Motors Failures Detection: A Systematic Review
Energies, 2020Co-Authors: Vito Mario Fico, M.m. Prats, Carmelina IerardiAbstract:Many papers related to this topic can be found in the bibliography; however, just a modest percentage of the introduced techniques are developed to a Technology Readiness Level (TRL) sufficiently high to be implementable in industrial applications. This paper is focused precisely on the review of this specific topic. The investigation on the state of the art has been carried out as a systematic review, a very rigorous and reliable standardised scientific methodology, and tries to collect the articles which are closer to a possible implementation. This selection has been carefully done with the definition of a series of rules, drawn to represent the adequate Level of Readiness of fault detection techniques which the various articles propose.
Malcolm Macdonald - One of the best experts on this subject based on the ideXlab platform.
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Solar sail science mission applications and advancement
Advances in Space Research, 2011Co-Authors: Malcolm Macdonald, Colin R. McinnesAbstract:Abstract Solar sailing has long been envisaged as an enabling or disruptive Technology. The promise of open-ended missions allows consideration of radically new trajectories and the delivery of spacecraft to previously unreachable or unsustainable observation outposts. A mission catalogue is presented of an extensive range of potential solar sail applications, allowing identification of the key features of missions which are enabled, or significantly enhance, through solar sail propulsion. Through these considerations a solar sail application-pull Technology development roadmap is established, using each mission as a Technology stepping-stone to the next. Having identified and developed a solar sail application-pull Technology development roadmap, this is incorporated into a new vision for solar sailing. The development of new technologies, especially for space applications, is high-risk. The advancement difficulty of low Technology Readiness Level research is typically underestimated due to a lack of recognition of the advancement degree of difficulty scale. Recognising the currently low Technology Readiness Level of traditional solar sailing concepts, along with their high advancement degree of difficulty and a lack of near-term applications a new vision for solar sailing is presented which increases the Technology Readiness Level and reduces the advancement degree of difficulty of solar sailing. Just as the basic principles of solar sailing are not new, they have also been long proven and utilised in spacecraft as a low-risk, high-return limited-capability propulsion system. It is therefore proposed that this significant heritage be used to enable rapid, near-term solar sail future advancement through coupling currently mature solar sail, and other, technologies with current solar sail Technology developments. As such the near-term Technology Readiness Level of traditional solar sailing is increased, while simultaneously reducing the advancement degree of difficulty along the solar sail application-pull Technology development roadmap.
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Solar sail mission applications and future advancement
2010Co-Authors: Malcolm Macdonald, Colin R. McinnesAbstract:Solar sailing has long been envisaged as an enabling Technology. The promise of open-ended missions allows consideration of radically new trajectories and the delivery of spacecraft to previously unreachable or unsustainable observation outposts. A mission catalogue is presented of an extensive range of potential solar sail applications, allowing identification of the key features of missions which are enabled, or significantly enhance, through solar sail propulsion. Through these considerations a solar sail application-pull Technology development roadmap is established, using each mission as a Technology stepping-stone to the next. Having identified and developed a solar sail application-pull Technology development roadmap, this is incorporated into a new vision for solar sailing. The development of new technologies, especially for space applications, is high-risk. The advancement difficulty of low Technology Readiness Level research is typically underestimated due to a lack of recognition of the advancement degree of difficulty scale. Recognising the currently low Technology Readiness Level of traditional solar sailing concepts, along with their high advancement degree of difficulty and a lack of near-term applications a new vision for solar sailing is presented which increases the Technology Readiness Level and reduces the advancement degree of difficulty of solar sailing. Just as the basic principles of solar sailing are not new, they have also been long proven and utilised in spacecraft as a low-risk, high-return limited-capability propulsion system. It is therefore proposed that this significant heritage be used to enable rapid, near-term solar sail future advancement through coupling currently mature solar sail, and other, technologies with current solar sail Technology developments. As such the near-term Technology Readiness Level of traditional solar sailing is increased, while simultaneously reducing the advancement degree of difficulty along the solar sail application-pull Technology development roadmap.
