Identification of Destructive Processes Affecting Hydraulic Servomechanisms of the Aircraft Control Assist System

Leszek Ułanowicz

doi:10.4028/www.scientific.net/SSP.180.238

Paper Titles

FPGA – ARM Heterogeneous System for High Speed Signal Analysis
p.207

Diagnostic-Oriented Vibroacoustic Model of the Reciprocating Engine
p.214

Measuring and Recording Systems Used in Flight Tests of Aircraft
p.222

Control Measurements at the Manufacturing of Metallic Products
p.232

Identification of Destructive Processes Affecting Hydraulic Servomechanisms of the Aircraft Control Assist System
p.238

Application of Adaptive Filtering for Weak Impulsive Signal Recovery for Bearings Local Damage Detection in Complex Mining Mechanical Systems Working under Condition of Varying Load
p.250

Glued Functions - Based Assessment of Interpolation Accuracy of Self-Ignition Engine Real Indicator Diagram
p.261

Modelling and the Elements of Controlled Dynamics of the Anti-Aircraft Missile Launcher Based Onboard the Warship
p.269

Determination of Suction Forces and Moment on Parallel Manoeuvring Vessels for a Future Control System
p.281

HomeSolid State PhenomenaSolid State Phenomena Vol. 180Identification of Destructive Processes Affecting...

Identification of Destructive Processes Affecting Hydraulic Servomechanisms of the Aircraft Control Assist System

Abstract:

The paper presents identification of destructive processes that affect hydraulic servomechanisms of the aircraft control assist system and influence of these processes onto values of parameters that characterize structures and operation of these systems. Particular attention is paid to the description of essential properties attributable to operation of the distributing device within a hydraulic servomechanism with a spotlight to physical background of the process when friction equilibrium of a sliding hydraulic pair is disturbed, which leads to its destruction. More specifically the issue associated with violation of friction stability in a cylindrical, sliding hydraulic pair due to the impact of an unbalanced radial hydrostatic force as well as material contamination and a hydrodynamic axial force. Qualitative assessment of unbalanced radial forces are carried out for the case when cylindrical slider is placed inside a guiding sleeve with consideration of various positions of the slider against the sleeve. Consequently, a set of parameters was found out with the aim to characterize operation quality (dependability) of a hydraulic servomechanism. Finally, characteristics of a hydraulic servomechanism with a linear distributing slider or a rotary slider have been developed as a function of their lifetime.