1 Flashcards
formula used to compute Force
F=PxA (Force= Pressure x Area)
during a hydraulic system test, do not allow relief valves to remain open for longer than ___. rapid heat buildup will occur.
5 seconds
MIL-PRF-83282 temp range
40°F-275°F
most hyd systems in aircraft register from 0 to ___psi
3,000psi
the navy requires __ independent hydraulic systems on all high-performance aircraft
2
HFSU (PMU) capacity
2 gallons
known as the combined hydraulic system
PC-2
contamination levels are monitored with which program
fluid surveillance
seals, caps and plugs must seal with an internal pressure of #-# psig
2-5psig
only use # micron (absolute) hydraulic filters
3
MIL-PRF-81019 is designed to operate in hydraulic systems in a temperature as low as -90F
MIL-PRF-81019 (-90F)
there are # major sources of hydraulic contamination (particle introduction)
(4) during fabrication, accidental introduction, operation, foreign liquids
what code is used on a MAF or WO when maintenance is breaking hydraulic system integrity
Z
formula used to compute Pressure
P= H x D (depth and density)
aircraft hydraulic systems require periodic __ or __
fluid servicing or air bleeding
NSTM ___ provides a good source of general information about different types of valves used in hydraulics
NSTM 556
which military specification series provide complete design, installation, and data requirements for aircraft hydraulic systems
SAE-AS5440
when servicing fluid-servicing hydraulic equipment, use only equipment utilizing a ____ filter
3 micron
