نتایج جستجو برای: airplane wing

تعداد نتایج: 20387  

2017
Adnan Kefal Mehmet Yildiz

This paper investigated the effect of sensor density and alignment for three-dimensional shape sensing of an airplane-wing-shaped thick panel subjected to three different loading conditions, i.e., bending, torsion, and membrane loads. For shape sensing analysis of the panel, the Inverse Finite Element Method (iFEM) was used together with the Refined Zigzag Theory (RZT), in order to enable accur...

Journal: :Aerospace 2022

In this paper, an aerodynamic and structural computation framework was produced to develop a more efficient aircraft configuration considering wing with distributed electric propulsion its use in different flight missions. For that reason, model of regional airplane used as case study. The considered nine-seat light cruise speed 500 km/h at altitude 9000 m. design the system is introduced, then...

Journal: :Aerospace 2022

Conventional aircraft use discrete flight control surfaces to maneuver during flight. The gaps and discontinuities of these generate drag, which degrades aerodynamic power efficiencies. Morphing technology aims replace conventional wings with advanced that can change their shape the minimum possible induced drag. This paper presents MataMorph-3, a fully morphing unmanned aerial vehicle (UAV) ca...

and B. Ghadiri, R. Ghasemi Asl,

In this paper, the equation of motion of an elastic 2 DoF wing model has been derived using Lagrange's method. The aerodynamic loads on the wing were calculated via the Strip-Theory and the effect of compressibility was included. Wing deflections due to bending and twist motions were determined using the Assume-Mode method. The aeroelastic equations were solved numerically using the V-g method....

2006
Erdem Acar Raphael T. Haftka

Probabilistic structural design tends to apply higher safety factors to inexpensive or light-weight components, because it is a more efficient way to achieve a desired level of safety. We show that even with limited knowledge about stress probability distributions we can increase the safety of an airplane by following this paradigm. This is accomplished by a small perturbation of the determinis...

1974
ANTONY JAMESON

Transonic aerodynamics is the focus of strong interest at the present time because it is known to encompass one of the most efficient regimes of flight. While current transport aircraft operate just below the speed of sound, more radical aerodynamic designs, such as R. T. Jones’ proposal for a yawed wing in [1], favor operation at low supersonic speeds in the range from Mach 1 to 1.3 (a regime ...

2010
Tsukasa Hosomura

Many researchers conducted the effort for improving the classification accuracy of satellite image. Most of the study has used optical spectral information of each pixel for image classification. By applying this method for high resolution satellite image, number of class became increase. This situation was remarkable for objects in urban area. In this study, we propose the method for extractin...

Journal: :Proceedings of National Aviation University 2005

Journal: :Bureau of Standards Journal of Research 1929

1994
Johan Hoffman

We present a new mathematical theory explaning the mircale of flight which is fundamentally different from the existing theory by Kutta-ZhukovskyPrandtl formed 100 year ago. The new theory is based a new resolution of d’Alembert’s paradox showing that slightly viscous bluff body flow can be viewed as zero-drag/lift potential flow modified by a specific separation instability into turbulent flow...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید