نتایج جستجو برای: aircraft manufacture

تعداد نتایج: 41451  

2002
M B BATES

Over recent years there has been a substantial growth in the number of industries employing project management methods (Chaffey, 1997), construction being one of the recognised first users of these techniques. Following the Latham (1994) and Egan (1998) reports in the UK, there appears to be a consensus that the construction industry could benefit by an examination of certain sectors of manufac...

2001
Yang Lee Thomas Allen Richard Wang

This paper reports our initial study of the remanufacturing process of an organization, with a special focus on the role and nature of the information involved. As a first step, we trace a key physical aircraft component, an aircraft fuel pump, throughout the process of remanufacture. We apply an information product perspective to guide the tracing of information relevant to all physical parts,...

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

در این پروژه به طراحی و ساخت یک کنترلر برای کنترل زاویه پیچ هواپیما پرداخته است. برای این کار، ابتدا اطلاعات کامل هندسی و وزنی هواپیمای مورد نظر را به دست جمع آوری شده و پس از آن توسط نرم افزار aaa مشتقات پایداری و ضرایب آیرودینامیکی مود طولی هواپیما محاسبه شده اند. سپس برخی از این مشتقات به صورت عملی در تونل باد محاسبه گشته و به مقایسه نتایج aaa با نتایج تجربی پرداخته شده است در این قسمت می تو...

2001
Pierre A. Gremaud Zhilin Li Ralph C. Smith Hien T. Tran Luis A. Cueva Parra

The imaging technique of X-ray radiography is useful for the inspection of parts used in military aircraft. Given a source/detector/object configuration, a two-dimensional radiographic image is collected. Using a series of these images, a three-dimensional image of a part is constructed in which defects can be detected. The inverse problem of interest is to estimate, to an arbitrarily high degr...

Abstract: The purpose of this paper is to design and evaluate the construction of a lightweight solar aircraft that is capable of flying continuously for 24 hours relying solely on solar energy. The required energy is absorbed during the day by solar panels, some is used directly for flight, and the excess energy is stored in the aircraft battery for overnight flight. The aircraft will then be ...

Journal: :E3S web of conferences 2021

Civil aircraft is the most complicated production of world and during manufacture various kinds nonconformities occur at times. Superfluous hole one typical nonconformity types. When coping with this kind problem, engineers often lack experience or standard treatment criteria, which may cause verbose progress, low efficiency even technique risk. This article firstly introduces reasons for diffe...

This paper proposes novel Fuel Cell Auxiliary Power Unit (FCAPU) for J150+ aircraft application. The primary version of APU in J150+ aircraft is a gas turbine Auxiliary Power Unit (APU) which is based on gas turbine jet engine but in the suggested FCAPU, the generated electrical power is achieved from chemical energy with higher efficiency. The Solid Oxide Fuel Cell (SOFC) technology is used to...

S.A. Fazelzadeh Haghighi, Seid H. Pourtakdoust,

Guidance and control of aircraft in the landing phase imposes extra pilot work loads, hence application of automatic landing control systems is of great importance. In this study automatic landing control systems are introduced and an optimal landing control system is designed. The control system performance criteria are based on minimum control effort. The designed system is simulated for a tr...

Journal: :روش های عددی در مهندسی (استقلال) 0
سید حسین پورتاکدوست و سیداحمد فاضل زاده حقیقی seid h. pourtakdoust s.a. fazelzadeh haghighi

guidance and control of aircraft in the landing phase imposes extra pilot work loads, hence application of automatic landing control systems is of great importance. in this study automatic landing control systems are introduced and an optimal landing control system is designed. the control system performance criteria are based on minimum control effort. the designed system is simulated for a tr...

Journal: :Journal of physics 2023

Abstract Composite materials are widely used in the design and manufacture of modern civil aircraft fuselage structures. Some large airliners already have full-size composite fuselages, which reduced weight structure, but problem reinforcing opening is also very important. In this paper, medium scale open reinforcement structures fuselages focused. The force characteristics passenger doors, car...

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