Results 11 to 20 of about 117 (107)
Shock and Vibration, 2023 This study aims at the lubricant film between the slipper and swashplate of an axial piston pump. Based on a single piston/slipper assembly model, a mathematical model for the squeeze film effect is developed according to the pressure-flow transfer ...
JiaHao Wu +3 more
doaj +2 more sources
Nonharmonic Control of the Blade-Vortex Interaction Noise of Electrically Controlled Rotor
International Journal of Aerospace Engineering, 2022 Electrically controlled rotor, also known as swashplateless rotor, represents an active rotor system that, due to the use of a trailing edge flap system instead of a swashplate, not only enables primary control but also conveniently reduces the blade ...
Kewei Li +3 more
doaj +2 more sources
Shock and Vibration, 2019 An electrically controlled rotor (ECR), also called a swashplateless rotor, replaces a swashplate with a trailing-edge flap system to implement primary rotor control.
Taoyong Su +3 more
doaj +2 more sources
A review of the energy recovery and energy pressure of liquid
Energy Science &Engineering, Volume 11, Issue 10, Page 3907-3927, October 2023., 2023 As we all know, with the progress of science and technology and the rapid development of industry, our world's nonrenewable energy gradually reduced, if no measures are taken, nonrenewable energy will eventually be consumed. To avoid the outcome of energy exhaustion, many scientists and scholars began to study renewable energy many years ago, and so ...
Yunguang Ji +6 more
wiley +1 more source
Advances in Materials Science and Engineering, Volume 2022, Issue 1, 2022., 2022 At present, with the rapid development of the material market, the requirements of high performance and high precision of materials are increasingly exposed. Nanomagnetic fluid materials are more and more widely used in oil film bearings, but their compressive strength and performance are insufficient, which is difficult to meet the current ...
Han Peng +3 more
wiley +1 more source
A method for reducing parasite drag of medium transport helicopter
Авіаційно-космічна техніка та технологія, 2023 At present, more and more stringent emission requirements are being imposed on helicopters. Carbon dioxide emissions are a function of fuel consumption, and fuel consumption is directly dependent on the power required for a helicopter cruise flight.
Mykhaylo Kybalnyy +3 more
doaj +1 more source
Shock and Vibration, Volume 2022, Issue 1, 2022., 2022 Raising the rotational speed is an effective way to improve the power density of axial piston pump, but high rotational speed tends to cause plunger cavity and valve plate throttling groove cavitation. The cavitation of axial piston pump must reduce its volumetric efficiency and cause vibration and noise.
Sun Zegang +4 more
wiley +1 more source
Modeling and Control of a Single Rotor Composed of Two Fixed Wing Airplanes
Drones, 2021 This paper proposes a simple flying rotor prototype composed of two small airplanes attached to each other with a rigid rod so that they can rotate around themselves.
José Antonio Bautista-Medina +2 more
doaj +1 more source
Study on the Cavitation Suppression Mechanism of Axial Piston Pump
International Journal of Aerospace Engineering, Volume 2022, Issue 1, 2022., 2022 Gaseous and vaporous cavitation is extremely harmful to axial piston pumps, such as reducing flow rate, increasing flow pulsation, increasing vibration, increasing noise, and shortening life. To suppress the cavitation and improve the performance of axial piston pumps, a mathematical model for suppressing cavitation in the plunger chamber with a ...
Song Yan +3 more
wiley +1 more source
Engineering Applications of Computational Fluid Mechanics, 2022 An integrated slipper/swashplate structure is developed for seawater hydraulic axial piston pump. Considering the overturning moment of the integrated slipper, the transient hydrodynamic lubrication model of the integrated slipper is established, and the
Ruidong Hong +6 more
doaj +1 more source