-17 Ch 2 Hydraulics Introduction Flashcards
(71 cards)
What are the types of symbols commonly used in drawing circuit diagrams for fluid power systems?
Pictorial, Cutaway, and Graphic
The symbols used to depict system configurations are used from?
SAE AS1290 and USA Standard Graphic Symbols for Fluid Power Diagrams (USAS Y32.10-1967) and publisher American Society of Mechanical Engineers United Engineering Center
-17 manual is used for maintenance instructions related to hydraulic systems utilizing what kinds of hydraulic fluids?
MIL-PRF-5606, MIL-PRF-83282, MIL-PRF-87257
A service operation in which entrapped air is allowed to escape from the closed hydraulic system.
Air Bleeding
A device used to prevent pressure and friction from extruding the O-Ring packing through the clearance gap of a seal.
Backup Ring
A localized gaseous condition within a liquid stream which occurs where the pressure is reduced to the vapor pressure
Cavitation
A level of contamination which exceeds Class 6 of Navy Standard or SAE AS4059 Class 9 and is considered abnormally high as a result of amount or size of the contaminants present.
Contamination, Gross
To removed free, entrained, or dissolved gas from a fluid filled system.
De-aerate
An enclosed workspace, room, or facility in which humidity and filtered inlet air are controlled.
Controlled Environment Work Center
A filter element which is intended to be discarded and replaced after one service cycle
Disposable Filter (Throw Away)
A decontamination process in which original aircraft fluid is removed to the maximum extent practical, and then discarded. The draining operation is generally, but not necessarily, performed with the system connected to a clean external hydraulic power source and new replacement fluid is added as required.
Flushing
The component of the seal which forms the cavity or inclusion which surrounds and supports the packing and controls the squeeze.
Gland
Halogen
Any of the 5 chemical elements; fluorine, chlorine, bromine, iodine, astatine
HEPA Filter
High Efficiency Particulate Air Filter. An efficient filter usually constructed from the fine fiber pleated papers, intended for the removal of particulate matter from air. Widely used in clean rooms and clean work stations.
Differential Pressure Indicator
An indicator which signals the difference in pressure at two points. A feature often included in filter assemblies to monitor the pressure drop across the filter element and thereby indicate element losing and the need for replacement.
K-B (kauri- Butanol)
A test method to measure solvent effectiveness
Laminar Flow
A flow situation in which fluid (or gas) moves in parallel layers
Laminar Flow Work Station
A contamination contrólele workbench used to ensure a high degree of cleanliness about a component.
Loaded Filter (clogged)
A filter element that has collected a quantity of contaminants such that it can no longer pass fluid at rated flow without excessive differential pressure or by-pass.
Manifold
An assembly which serves as a fluid conductor having multiple connection ports
Micron
Unit of measurement one millionth of a meter long, or approximately 0.00003937 inch expressed in English units.
NAVAIR, Naval Air Systems Command
The Navy headquarters activity having overall responsibility for the acquisition and support of aeronautical weapons systems and related material.
Oxidation Inhibitor
An additive to the base fluid intended to minimize fluid oxidation and the generation of oxidation byproducts.
Packing
The component of a seal which serves as a sealing medium by nature of its plastic or elastic properties, or it’s ability to deform into the shape of the gland.
