AMT Airframe Chapter 12: Hydraulic and Pneumatic Power Systems with 100% correct answers(GUARANTEED SUCCESS))

What are the advantages of a hydraulic system? -light weight -ease of installation -minimum maintenance - ease of inspection Pascal's law law stating that pressure exerted on a confined liquid is transmitted equally and undiminished intensity everywhere Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:54 Full screen 6 Ways to Show Appreciation for Your Child's Teacher Viscosity A liquid's resistance to flowing chemical stability Liquids ability to resist oxidation and deterioration for long periods What metals have an undesirable effect on particular liquids? zinc, lead, brass, and copper Flash point the temperature at which a liquid gives off vapor in sufficient quantity to momentarily ignite in reaction to introduced flames Fire point the temperature at which a liquid gives off vapor in sufficient quantity to sustain a fire Describe the two types of hydraulic systems - Open center hydraulic systems: the pump circulates fluid from the reservoir, through the selector valves, and back to the reservoir - close center hydraulic systems: Three actuators are arranged in parallel and two of the three actuating units operate simultaneously when one actuating unit is not operating Hydraulic power pack a small unit that contains an electric pump, reservoir, valves, filters, and pressure relief valves Reservoir A storage tank that supplies fluid to operating needs of the system and replenishes fluid in the case of a leakage reservoir pressure relief valve valve designed to open at a preset value to prevent over pressurization of the reservoir Filter screening device that prevents the entry of contaminants into the hydraulic system micron-type filter a filter composed of specially treated paper What does the maintenance of filters consists of? cleaning and replacement of filter Filter bypass valve a valve that opens when the filter becomes clogged, permitting hydraulic flow Name three types of power-driven pumps -engine driven -electric motor driven - air driven What is function of Medium-pressure pneumatic systems? provides compressor bleed air for engine starting, cabin pressurization, and anti-icing. Describe one function of low-pressure pneumatic systems provides power to drive air-driven and electrically driven gyros What type of pump is used to drive the gyroscopic instruments on a pressurized reciprocating engine aircraft? vane-type air pump that is driven by an electric motor What is the difference between a wet vacuum pump and a dry vacuum pump? Wet vacuum pumps use steel vanes which are lubricated by engine oil and requires an oil separator. dry vacuum pumps do not require external lubrication. The purpose of a moisture separator is to separate the water from the air