Results 21 to 30 of about 48,655 (212)
Applied Sciences, 2023 The aerodynamic interaction between the rotor and fuselage is an important consideration in relation to the drag performance prediction of helicopters. In this paper, based on dynamic patched-grid technology coupled with a three-dimensional N–S equation ...
Wenbo Shi, Heng Zhang, Yuanxiang Li
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Experimental Study of Helicopter Fuselage Drag [PDF]
Journal of Aircraft, 2016 Experimental data are presented for the parasite drag of various helicopter fuselage components, such as skids, external fuel tanks, and tailplane. The experiments were conducted at the Kazan National Research Technical University (Kazan Aviation Institute) T-1K wind tunnel, investigating four versions of a fuselage similar to the Ansat helicopter.
Stepanov, Robert +6 more
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Aerodynamic Interference between Oscillating Lifting Surfaces and Fuselage Part 1: Oscillating Lifting Surfaces [PDF]
INCAS Bulletin, 2013 This is the first of a series of articles that deal with the calculation of the aerodynamic unsteady forces on lifting surfaces (wing, empennages) in the presence of the fuselage. The aim of this work is multiple: the calculation of flutter, gust effect,
Valentin Adrian Jean BUTOESCU
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Service life extension program for aircraft structures [PDF]
Scientific Technical Review, 2015 Performance of aircraft in general, its systems and airframe materials, can be significantly reduced by environmental conditions in which the aircraft operates during the service life.
Maksimović Stevan +2 more
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Imaging and Motion Parameter Estimation of Flying Helicopter With Duo Airborne SARs in
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022 Duo airborne synthetic aperture radars in the $X$-band are proposed to acquire images of a flying helicopter. The backscattered signals manifest entangled features attributed to the compound linear motion of fuselage and spin motion of rotors.
Chou-Wei Kiang, Jean-Fu Kiang
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Test Research on Fuselage Panel Subjected to Internal Pressure Load
Hangkong gongcheng jinzhan, 2018 Internal pressure is a severe cyclic load for fuselage structure, and it is important to investigate the fatigue and damage tolerance characters of fuselage panel under internal pressure.
Zang Weifeng, Chen An, Dong Dengke
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The crack path in fuselage panel under mixed mode biaxial loading
Fracture and Structural Integrity, 2019 This paper provides the background for practical applications of nonlinear fracture resistance parameters for structural integrity assessment of aviation structures with initial cracks.
Alexander Zakharov +2 more
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Research of Design Technology of Large Opening Lifting Photo-electric Pod
Hangkong gongcheng jinzhan, 2021 The fuselage large opening has the problems of rapid change of structural stiffness and deformation discontinuity, which makes the modification design of fuselage with large opening become the important and difficult points.Taking a foreign aircraft as ...
MIAO Zhitao, LI Jianping, BAI Yanjie
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Mutual Aerodynamic Interference Mechanism Analysis of an “X” Configuration Quadcopter
Aerospace, 2021 This paper studies the quadcopter’s mutual interference phenomenon. The flow field of the quadcopter at different flight speeds is simulated by solving the three-dimensional unsteady Reynolds averaged Navier-Stokes equations with sliding mesh methods ...
Jianchuan Ye, Jiang Wang, Peijian Lv
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Collision‐Resilient Winged Drones Enabled by Tensegrity Structures
Advanced Robotics Research, EarlyView.Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui +5 more
wiley +1 more source