Results 301 to 310 of about 542,371 (346)
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Aircraft propulsion health status prognostics and prediction
Advances in Science and Technology Research JournalAircraft propulsion health monitoring and prognostics are critical to ensuring operational reliability ...
Slawomir Szrama +2 more
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IEEE transactions on power electronics
Solid-state circuit breaker (SSCB) with high efficiency and high gravimetric power density is required for electrified aircraft propulsion (EAP). A cryogenically cooled gallium nitride (GaN) device-based SSCB module is developed for the EAP system to ...
S. K. Dam +7 more
semanticscholar +1 more source
Solid-state circuit breaker (SSCB) with high efficiency and high gravimetric power density is required for electrified aircraft propulsion (EAP). A cryogenically cooled gallium nitride (GaN) device-based SSCB module is developed for the EAP system to ...
S. K. Dam +7 more
semanticscholar +1 more source
PWM Strategy for MW-Scale “SiC+Si” ANPC Converter in Aircraft Propulsion Applications
IEEE transactions on industry applications, 2021In this article, an improved pulsewidth modulation (PWM) strategy is introduced for three-level active neutral point clamped converters based on a hybrid configuration of silicon carbide (SiC) mosfets and silicon (Si) insulated gate bipolar transistor ...
Jiangbiao He, Di Zhang, D. Pan
semanticscholar +1 more source
IEEE Transportation Electrification Conference and Expo
This paper presents and evaluates the optimal design of a coreless axial flux permanent magnet (AFPM) motor for electric aircraft propulsion. Ferromagnetic cores are entirely removed from the machine’s structure to improve the specific power density and ...
Matin Vatani +5 more
semanticscholar +1 more source
This paper presents and evaluates the optimal design of a coreless axial flux permanent magnet (AFPM) motor for electric aircraft propulsion. Ferromagnetic cores are entirely removed from the machine’s structure to improve the specific power density and ...
Matin Vatani +5 more
semanticscholar +1 more source
NASA electrified aircraft propulsion efforts
Aircraft Engineering and Aerospace Technology, 2019Purpose This paper aims to review national aeronautics and space administration (NASA’s) broad investments in electrified aircraft propulsion (EAP). NASA investments are guided by an assessment of potential market impacts, technical key performance parameters, and technology readiness attained through a combination of studies, enabling fundamental ...
Ralph H. Jansen +5 more
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Aero-propulsive interaction model for conceptual distributed propulsion aircraft design
Aircraft Engineering and Aerospace Technology, 2022Purpose This research aims to present an aero-propulsive interaction model applied to conceptual aircraft design with distributed electric propulsion (DeP). The developed model includes a series of electric ducted fans integrated into the wing upper trailing edge, taking into account the effect of boundary layer ingestion (BLI).
Mohamed Awad, Eike Stumpf
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Journal of Aircraft, 1972
Propulsion requirements for the next generation of civil aircraft are examined and some new and quite demanding needs are defined—larger engine sizes, higher takeoff thrusts, and much lower noise levels. The remarkable propulsion advances over the past two decades are charted and, from these, projections are made for the next round of improvements. All
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Propulsion requirements for the next generation of civil aircraft are examined and some new and quite demanding needs are defined—larger engine sizes, higher takeoff thrusts, and much lower noise levels. The remarkable propulsion advances over the past two decades are charted and, from these, projections are made for the next round of improvements. All
openaire +1 more source
The Journal of the Royal Aeronautical Society, 1961
The 1,186th Lecture to be given before the Society—and the 40th Main Lecture to be held at a Branch centre—“ Trends in Aircraft Propulsion” by H. Pearson, B.A., F.R.Ae.S., Chief Engineer (Performance & Research), Rolls-Royce Ltd., was given under the auspices of the Southampton Branch on 19th January 1961. Professor A. R.
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The 1,186th Lecture to be given before the Society—and the 40th Main Lecture to be held at a Branch centre—“ Trends in Aircraft Propulsion” by H. Pearson, B.A., F.R.Ae.S., Chief Engineer (Performance & Research), Rolls-Royce Ltd., was given under the auspices of the Southampton Branch on 19th January 1961. Professor A. R.
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Jet propulsion for quiet aircraft
The Journal of the Acoustical Society of America, 1974A novel method of jet noise reduction has been subjected to bench and wind tunnel tests. This patented method uses very small nozzles arranged on struts protuding from the upper surface of an aircraft wing. Bench tests included various arrangements of nozzles on each strut; tests with heated air; tests of noise power and directivity versus number of ...
F. Bert Bossler, D. L. Smith
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Military/Commercial Aircraft Propulsion Relationships
SAE Technical Paper Series, 1970<div class="htmlview paragraph">This paper discusses the inter-relationship between turbojet and turbofan engines used in military and commercial service. This relationship has evolved from the modification of military engines for application to the initial commercial transport aircraft to the present where some engines have been designed from ...
William H. Sens, Robert M. Meyer
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