Results 11 to 20 of about 17,125 (245)
Determination of the Lift-Off Speed in Foil Bearings Using Various Measurement Methods [PDF]
Mechanics and Mechanical Engineering, 2018 Abstract One of the most important parameters describing the operation of foil bearings is the speed at which—under certain load conditions—a lubricating film is created. Knowing the value of this parameter, one can determine the nature of the operation of a rotor that is supported by these bearings.
Paweł Bagiński, Grzegorz Żywica
openaire +1 more source
Lubricants, 2018 Jacking-oil pockets are applied in many journals and thrust bearing applications in order to provide a hydrostatic oil film force that ensures a wear free run-up following a successful lift-off procedure. However, all components of the jacking-oil system
Thomas Hagemann +2 more
doaj +1 more source
Applied Sciences, 2021 This paper puts forward an aerodynamic design method to improve the high-speed aerodynamic performance of an aircraft with low-aspect-ratio tailless configuration.
Zhongyuan Liu, Lie Luo, Binqian Zhang
doaj +1 more source
A Study of Wind Shear Influences on the Aerodynamic Performances of a UAV Airfoil
Applied Sciences, 2023 In order to study the flight strategies of birds in shear wind and realize the long-range flight of an unmanned aerial vehicle (UAV), the aerodynamic performances of a UAV’s airfoil under different shear wind are studied using numerical methods.
Yin Yang, Dawei Liu, Lianshan Lu
doaj +1 more source
Drones, 2023 Distributed electric propulsion technology has great potential and advantages in the development of drones. In this paper, to study the slipstream effect of distributed propellers, the actuator disk method was used to verify a single propeller, and the ...
Mingzhi Cao +4 more
doaj +1 more source
Effect mechanism of dielectric-coated electrodes on metal particle lift-off in SF(6) gas
The Journal of Engineering, 2019 In order to study the influence mechanism of dielectrically coated electrode in SF(6) gas under DC electric field on metal particle lift-off, experimental platform is setup and motion trajectory is recorded by high-speed camera. The experiment shows that
Zhan Zhenyu +4 more
doaj +1 more source
Machines, 2021 The dry lubricated bump-type foil air bearing enables a carrying load capacity due to a pressure build up in a convergent air film. Since the air bearing provides low power dissipation above the lift-off speed and the flexible foil provides an adaptivity
Fabian Walter, Michael Sinapius
doaj +1 more source
Applied Sciences, 2022 Morphing airfoil is a promising technology for future aircraft to realize all-stage high performance. In the present paper, a conceptual aircraft with morphing airfoil is proposed and the aerodynamic characteristics of three types of morphing airfoils ...
Yuwei Cheng +4 more
doaj +1 more source
IEEE Access, 2019 This paper proposes a new lightweight, low cost, and high performance detection method of pipeline defects through compact off-axis magnetization and sensing.
Li Jian, Ge Yu, Huang Xinjing
doaj +1 more source
Lubricants, 2023 Gas foil thrust bearings (GFTBs) have been successfully used to support the axial load of oil-free microturbomachinery with low drag friction due to the low viscosity of gas or air used as a bearing lubricant.
Sung Ho Hwang +2 more
doaj +1 more source