Results 161 to 170 of about 9,897 (232)
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IEEE Transactions on Industrial Informatics, 2021
In this article, a novel adaptive dynamic programming (ADP) approach is proposed for the optimal control problem of nonlinear continuous control systems with unknown dynamics.
Tao Sun, Ximing Sun
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In this article, a novel adaptive dynamic programming (ADP) approach is proposed for the optimal control problem of nonlinear continuous control systems with unknown dynamics.
Tao Sun, Ximing Sun
semanticscholar +1 more source
2021
In the last chapter, the turbojet engine was discussed in detail. Historically, commercial aviation began toward the end of World War II with propeller-driven planes. It soon became apparent that the flight speeds of the propeller planes were limited to low subsonic values. The use of the gas turbine engine in combination with a propulsion nozzle, i.e.,
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In the last chapter, the turbojet engine was discussed in detail. Historically, commercial aviation began toward the end of World War II with propeller-driven planes. It soon became apparent that the flight speeds of the propeller planes were limited to low subsonic values. The use of the gas turbine engine in combination with a propulsion nozzle, i.e.,
openaire +1 more source
Applied Mechanics and Materials, 2012
Looking into the future of aviation for commercial aircrafts there are various viable options for engine and associated propulsion technologies. The team had to eliminate some of the possible solutions. Superconducting electric motors were alleviated considering weight factors and lack of technology readiness to fly long range commercial jets.
Sarnavi Mahesh, Pate Sweety Prakash
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Looking into the future of aviation for commercial aircrafts there are various viable options for engine and associated propulsion technologies. The team had to eliminate some of the possible solutions. Superconducting electric motors were alleviated considering weight factors and lack of technology readiness to fly long range commercial jets.
Sarnavi Mahesh, Pate Sweety Prakash
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IEEE Sensors Journal
As the most popular power source equipment in commercial aviation, turbofan engines face problems such as difficulties in data acquisition and unbalanced datasets.
Keshun You, Guangqi Qiu, Yingkui Gu
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As the most popular power source equipment in commercial aviation, turbofan engines face problems such as difficulties in data acquisition and unbalanced datasets.
Keshun You, Guangqi Qiu, Yingkui Gu
semanticscholar +1 more source
Science of the Total Environment
With the continuous increase in global air transportation, the impact of ultrafine particulate matter (PM) emissions from aviation on human health and environmental pollution is becoming increasingly severe. In addition to carbon reduction throughout the
Zheng Xu +9 more
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With the continuous increase in global air transportation, the impact of ultrafine particulate matter (PM) emissions from aviation on human health and environmental pollution is becoming increasingly severe. In addition to carbon reduction throughout the
Zheng Xu +9 more
semanticscholar +1 more source
Aircraft Engineering and Aerospace Technology, 1989
PROGRESS in the development of turbofan engines for civil and military applications has enabled requirements from around 5,000lb to over 70,000lb thrust to be satisfied or anticipated, with prospects for this range to be extended. The three major powerplant manufacturers (Rolls‐Royce, General Electric and Pratt & Whitney) are engaged in fiercely ...
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PROGRESS in the development of turbofan engines for civil and military applications has enabled requirements from around 5,000lb to over 70,000lb thrust to be satisfied or anticipated, with prospects for this range to be extended. The three major powerplant manufacturers (Rolls‐Royce, General Electric and Pratt & Whitney) are engaged in fiercely ...
openaire +1 more source
IEEE Sensors Journal
Multiple sensors have been employed to monitor the entire operational cycle of turbofan engines to enhance their reliability. The data collected from multiple sensors comprehensively reflect the operating status of a turbofan engine. However, multisensor
Juntao Hua +5 more
semanticscholar +1 more source
Multiple sensors have been employed to monitor the entire operational cycle of turbofan engines to enhance their reliability. The data collected from multiple sensors comprehensively reflect the operating status of a turbofan engine. However, multisensor
Juntao Hua +5 more
semanticscholar +1 more source
Journal of Computing and Information Science in Engineering, 2022
The study of intelligent operation and maintenance methods for turbofan engines is of great importance for improving the reliability of turbofan engines. Given the harsh operating conditions and complex structure of the turbofan engine, it is extremely
Yu Zheng +6 more
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The study of intelligent operation and maintenance methods for turbofan engines is of great importance for improving the reliability of turbofan engines. Given the harsh operating conditions and complex structure of the turbofan engine, it is extremely
Yu Zheng +6 more
semanticscholar +1 more source
Far-field calculations for turbofan noise
AIAA Journal, 2001The development of variable-order mapped infinite wave envelope elements for finite element modeling of acoustic radiation from turbofan nacelles is reviewed. These elements can be used outside of the near field as a nonreflecting boundary condition and as a finite-dimensional discretization of the infinite exterior domain for calculation of far-field ...
Indranil Danda Roy, Walter Eversman
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Advanced Courses
The new generation of Ultra-High-By-Pass-Ratio (UHBR) turbofan engine while considerably reducing fuel consumption, threatens higher noise levels at low frequencies because of its larger diameter, lower number of blades and rotational speed.
E. de Bono +7 more
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The new generation of Ultra-High-By-Pass-Ratio (UHBR) turbofan engine while considerably reducing fuel consumption, threatens higher noise levels at low frequencies because of its larger diameter, lower number of blades and rotational speed.
E. de Bono +7 more
semanticscholar +1 more source