نتایج جستجو برای: turboprop engine

تعداد نتایج: 71700  

Journal: :IEEE Transactions on Transportation Electrification 2022

As battery and electric machine technologies improve, the electrification of aircraft propulsion systems may have potential to reduce energy consumption emissions transport aircraft. Incorporating electrical components adds a dimension system design space introduces new tradeoffs between weight efficiency. In this article, we apply numerical optimization conceptual regional category airplanes q...

Journal: :Xibei gongye daxue xuebao 2023

This paper studies several problems that may exist in the aerodynamic design of low Mach number general aircraft, and discusses characteristics pressure distribution some related airfoils while part is verified by a multi-point laminar airfoil case. Firstly, issues which such as relatively large zero-lift drag coefficient, high stall performance requirements, variation range Reynolds number, ar...

Journal: :Journal of physics 2022

Abstract The fuel system is one of the most important and complex parts aircraft, being tasked with suppling correct quantity to aircraft engine during all operative conditions, from flight ground operation. It must operate efficiently in any condition guarantee safety reliability. A for kerosene-based fuels (i.e., jet fuels) a combination hydraulic components, namely, tanks, pumps, bypass valv...

2009
A. Orlichenko R. J. Dawe H. Peng K. Arfanakis

Introduction: Diffusion tensor imaging (DTI) is a non-invasive MR imaging technique that can be used to probe in-vivo the microstructural properties of brain tissue [1]. Accurate inter-subject spatial normalization of DTI data is crucial for voxel-based comparisons of neuronal structural integrity [2] and brain connectivity [3] across populations, as well as for the development of a white matte...

Journal: :Journal of physics 2023

Abstract The integration of distributed electric propulsion and energy storage systems into the wing structure significantly affects mass distribution wing. Compared with conventional aircraft which are designed engines mounted on inner integral fuel tanks, this substantially changes overall loads structure. Assuming a retrofit scenario, paper studies influence transient gust landing impact dyn...

Journal: :The Journal of the Acoustical Society of America 1983

Journal: :Proceedings of National Aviation University 2007

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی هوافضا 1387

هدف پروژه حاضر تهیه مدل صفر بعدی از رفتار توربوماشین موتور، و پس از آن مدلسازی پدیده احتراق در محفظه، مراحل توربین، نازل و در نهایت تخمین میزان آلاینده های خروجی از موتور می باشد. پس از معرفی روش های متداول مدلسازی رفتار توربوماشین، به تشریح روش صفر بعدی پرداخته شده و رفتار اجزای توربین گاز به صورت جزء به جزء به صورت منحنی های مشخصه بیان شده است. با تعریف مفهوم سازگاری و استفاده از مشخصه های ا...

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