Results 11 to 20 of about 498,567 (82)
Jixie chuandong, 2023 In order to study the influence of relevant parameters of the swashplate engine pendulum mechanism on engine dynamic performance, a mathematical model which can express the relationship between its design parameters and engine dynamic performance is established through the derivation of relevant parameters of the swashplate engine pendulum mechanism ...
Deng Tao +3 more
openaire +2 more sources
Multi-mode fault dataset for aviation piston pump based on standard test procedure. [PDF]
Data BriefThe constant-pressure variable-displacement piston pumps on aircraft are typically driven by the engine, providing energy and power for the aircraft's hydraulic systems and fuel servo systems. Due to the varying engine speeds and fluctuating loads in the
Wang T, Ma J, Fu Y.
europepmc +2 more sources
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
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
Modelling the radar signature of rotorcraft
IET Radar, Sonar &Navigation, Volume 15, Issue 8, Page 867-883, August 2021., 2021 Abstract The problem of radar helicopter detection and classification requires simple and fast modelling of rotorcraft signature to aid the design of specific waveforms or to provide quality training data to machine learning algorithms. Here, we present a modular parametric model for the baseband radar cross‐section of helicopters in the narrowband ...
Guillaume Point +4 more
wiley +1 more source
Fault Prediction of Centrifugal Pump Based on Improved KNN
Shock and Vibration, Volume 2021, Issue 1, 2021., 2021 To effectively predict the faults of centrifugal pumps, the idea of machine learning k‐nearest neighbor algorithm (KNN) was introduced into the traditional Mahalanobis distance fault discrimination, and an improved centrifugal pump fault prediction model of KNN based on the Mahalanobis distance is proposed.
YunFei Chen +4 more
wiley +1 more source
Experimental and Numerical Vibration Analysis of Hydraulic Pipeline System under Multiexcitations
Shock and Vibration, Volume 2020, Issue 1, 2020., 2020 Pipeline systems in aircraft are subjected to both hydraulic pump pressure fluctuations and base excitation from the engine. This can cause fatigue failures due to excessive vibrations. Therefore, it is essential to investigate the vibration behavior of the pipeline system under multiexcitations.
Peixin Gao +5 more
wiley +1 more source
, 2019 This thesis investigates the effects of swashplate vibration and slipper surface geometry on the performance of the slipper-swashplate interface. The lubricating interfaces within a swashplate type axial piston machine are the most complicated part of ...
Darbani, Ashkan A
core +3 more sources
Energy Science &Engineering, Volume 14, Issue 7, Page 3162-3178, July 2026.This paper presents a hydrate pressure core processing device integrated with a high‐precision active control system to perform nondestructive transfer, cutting, and analysis. To address the limitations of slow dynamic response and high thermal inertia in traditional passive systems, a differentiated control scheme is implemented.
Liwen Nan +3 more
wiley +1 more source
New perspectives on Web search engine research [PDF]
, 2012 Purpose–The purpose of this chapter is to give an overview of the context of Web search and search engine-related research, as well as to introduce the reader to the sections and chapters of the book.
Lewandowski, Dirk
core