نتایج جستجو برای: aircraft manufacture

تعداد نتایج: 41451  

Journal: :نشریه دانشکده فنی 0
دکتر محمد رحیمیان مهندس حمید یزدانی صابونی

the study of flight vehicle structures reveals the importance of obtaining the most suitable accuracy compatible with construction. for this purpose, several experiments were conducted at the agard institute. in this paper the results of one such experiment performed on a sample airplane wing are presented. aircraft structural engineers use several methods to model these structures. specifing h...

Journal: :Applied Physics Letters 2022

We demonstrate through-skin electromagnetic induction imaging of pilot-holes in an aluminum block concealed by a 0.41 mm thick shield with 1.49 kg mechanically translatable radio frequency atomic magnetometer. The are identified and localized submillimeter accuracy both without the Al shield. utilize dual-frequency technique to isolate image target while removing effect shielding from image. Im...

Journal: :Advances in Materials Science and Engineering 2021

3D printing, also called additive manufacturing (AM), is a method of creating solid parts from digital document. By utilizing routes, the fabrication 3D-printed objects can be made. These layers viewed as gently cut level cross-area manifest object. printing somewhat in obstruction to subtractive manufacture, which expelling/discharging out touch metal or plastic for occurrence milling machine....

This article proposes a new approach for centralized path planning of multiple aircraft in presence of the obstacle-laden environment under low flying rules. The problem considers as a unified nonlinear constraint optimization problem. The minimum time and control investigate as the cost functions and the maximum velocity and power consider as the constraints. The pseudospectral method applies ...

اشراقی آرانی, مجتبی, صادقی مقدم, محمدحسن,

Public reliance on air transport industry as one of burgeoning factors of world economy is based on aviation safety. But the current challenge of aviation industry is the lax surveillance of safety standards by related governments which is basically due to illegal registration of aircraft. This article with reliance to the position of legal elements in achieving aviation safety has analyz...

Wing rock phenomenon is an undesired motion appears in high angles of attack where a rolling in the aircraft in positive and negative roll angles with specified amplitude and frequency is occurred. In this paper two adaptive controllers suggested to control the rolling dynamics under wing rock phenomenon for a delta wing aircraft with presence of disturbance. Disturbance was considered as unmat...

Journal: :Jurnal Pengabdian Masyarakat Sains Indonesia 2021

Abstract: One of the materials taught in high school physics learning is fluid dynamics which includes an understanding aircraft lift practice basics aeromodelling. In general, students experience problems learning, this due to lack practical aspects that are displayed aeromodelling learning. Aeromodeling still considered as something difficult and apply makes feel less confident Most think the...

ژورنال: :فیزیک زمین و فضا 2012
سحر تاج بخش پروین غفاریان فاطمه صحراییان

ice can form on aircraft surface at 0° c or colder temperatures when liquid water is present. this can happen both on the ground and at the flight levels of the aircraft. aircraft icing has not only an impact on flight safety but has also an economic impact. according to the report of research department of the faa (federal aviation administration), from 1982 to 2001, 13% of accidents due to ai...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید