HYDRAULIC AND PNEUMATIC SYSTEMS

PART IIHYDRAULIC AND PNEUMATIC SYSTEMSPASCALS TALEGENERAL OBJECTIVETO SIMPLIFY THE CONCEPTS OF HYDRAULIC AND PNEUMATIC SYSTEMS FITTED IN AIRCRAFT.SPECIFIC OBJECTIVESLEARNING/ RECAPPING COMPONENTS OF HYDRAULIC AND PNEUMATIC SYSTEMS.

LEARNING ADVANTAGES AND APPLICATIONS OF HYDRAULIC SYSTEMS.

LEARNING ADVANTAGES AND APPLICATIONS OF PNEUMATIC SYSTEMS.SPECIFIC OBJECTIVESLEARNING/ RECAPPING COMPONENTS OF HYDRAULIC AND PNEUMATIC SYSTEMS.

LEARNING ADVANTAGES AND APPLICATIONS OF HYDRAULIC SYSTEMS.

LEARNING ADVANTAGES AND APPLICATIONS OF PNEUMATIC SYSTEMS.PREVIOUS LECTURE TIE-INLEARNT USE OF HYDRAULIC PRESSURE.

GENERAL UNDERSTANDING OF THE PARTS OF A HYDRAULIC SYSTEM.APPLICATIONSSERVICESCOMPONENTSADVANTAGESHYDRAULIC SYSTEMSAPPLICATIONS HEAVY MACHINERY

APPLICATIONS HEAVY MACHINERY CAR BRAKES

APPLICATIONS HEAVY MACHINERY CAR BRAKES LOWRIDER CARS

10APPLICATIONS

SUPPLY PRIMARY EMERGENCY SECONDARY UTILITY

MAIN SERVICESPRIMARY SUPPLY+

EMERGENCY SUPPLYSECONDARY SUPPLYUTILITY SUPPLYUTILITY SERVICESMAIN SERVICESELEVATORSAILERONSRUDDERSPOILERSAIR BRAKEFLAPS

UTILITY SERVICESRAMPSTEERINGUNDER-CARRIAGEWHEEL BRAKES

UTILITY SUPPLYPROBLEMS FACEDHIGH PRESSURE HIGH TEMP

NO LEAKS. SEALS. NO CONTAMINATION.

INCOMPRESSIBLE. NO AIR.AIR IN SYSTEM

AIR IN SYSTEM TEMPERATURE

AIR IN SYSTEM TEMP PRESSURE

AIR IN SYSTEM TEMP PRESSURE MOVEMENT

COMPONENTS PRIMARY EMERGENCY SECONDARY UTILITY

COMPONENTS RESERVOIR PUMP ACCUMULATOR FILTER NRVs

COMPONENTS RESERVOIR PUMP ACCUMULATOR FILTER NRVs

BIG ENOUGH TO HOLD FLUID REMOVAL OF AIR COOLINGBAFFLESAPPLY PRESSURE

RELIEVE PRESSURE

RESERVOIR

PUMPS

FLUID DRAWN INFLUID PUSHED OUT 10 AXIAL PISTON AND CYLINDERS

PUMPS CONSTANT DISPLACEMENT

PUMPS

SELF REGULATING

PUMPS HAND PUMPS

ACCUMULATOR

ABSORBS SHOCKS AND SUDDEN CHANGES IN FLUID PRESSURE SMOOTHES OUT PRESSURE RIPPLES CAUSED BY PUMP OPERATION AND USE IN JACKS MAINTAIN PRESSURE WHEN PUMP FAILS TO OPERATE

VALVES

NON RETURN VALVES PRESSURE RELIEF VALVES

CONTROL VALVE

ROTARY CONTROL VALVE

ROTARY CONTROL VALVE

ROTARY CONTROL VALVE

CONTROL VALVE LINEAR CONTROL VALVE

LINEAR CONTROL VALVE

LINEAR CONTROL VALVE

MISCELLANEOUSFILTERS.

HEAT EXCHANGERS AND TEMPERATURE WARNING SYSTEMS.

INSTRUMENTATION AND CONTROL.

JACKS AND MOTORS.

ADVANTAGES OF HYDRAULICSINSTANTANEOUS ACTION.

SYSTEM IS RELIABLE, COMPACT & EASY TO MAINTAIN.

LONGER LOADS CAN BE MOVED EASILY WITH VERY LITTLE EFFORT ON SIDE OF PILOT.

ADVANTAGES OF HYDRAULICSGEARING FOR DIFFERENT LOADS CAN BE ACHIEVED EASILY BY CHANGING PISTON AREA.

HYDRAULIC FLUID ALSO ACTS AS A LUBRICATION FOR MOVING PARTS.

DISADVANTAGES OF HYDRAULICSINABILITY TO STORE PRESSURE.

TEMPERATURE AND AERATION.

CONTAMINATION.

FLAMMABILITY SKYDROL vs. OM-15

HAZARDOUS LIQUID.

HAZARDSHIGH PRESSURE TOXIC NATURE

APPLICATIONSCOMPONENTSADVANTAGESdisadvantagesPNEUMATIC SYSTEMSAPPLICATIONS OF PNEUMATICSPRESSURE ENERGY STORAGE.

COMPRESSION.

PRESSURE ENERGY TRANSFER.

HEAT ENERGY TRANSFER.PRESSURE ENERGY STORAGE FIRE FIGHTING SYSTEMS

PRESSURE ENERGY STORAGE FIRE FIGHTING SYSTEMS LIFE RAFTS

PRESSURE ENERGY STORAGE FIRE FIGHTING SYSTEMS LIFE RAFTS HYDRAULIC BACKUP

COMPRESSION SHOCK ABSORBERS

COMPRESSION SHOCK ABSORBERS

SEAL INFLATION

PRESSURE ENERGY TRANSFER AUGMENTED LIFT DEVICES

PRESSURE ENERGY TRANSFER AUGMENTED LIFT DEVICES

PRESSURE ENERGY TRANSFER AUGMENTED LIFT DEVICES AIR STARTERS

HEAT ENERGY TRANSFER AIR CONDITIONING

HEAT ENERGY TRANSFER AIR CONDITIONING ICE PROTECTION

COMPONENTS OF PNEUMATICSCOMPRESSOR.RELIEF VALVE.GROUND CHARGING VALVE.ANTI-FREEZE.OIL AND WATER TRAP.REGULATING VALVE.AIR BOTTLES.COMPONENTS OF PNEUMATICS

ADVANTAGES OF PNEUMATICSSIMPLICITY OF DESIGN AND CONTROL.

AIR ALREADY AVAILABLE FROM THE PROPULSION SYSTEM AT A HIGH TEMP & PRESSURE. SO COST EFFECTIVE.

RELIABILITY.LONG OPERATING LIVES.LITTLE MAINTENANCE.BECAUSE GAS IS COMPRESSIBLE, LESS SUBJECT TO SHOCK DAMAGE.COMPRESSED GAS CAN BE STORED, SO MACHINES STILL RUN FOR A WHILE IF ELECTRICAL POWER IS LOST.

ADVANTAGES OF PNEUMATICSLIGHTER AND CLEANER.USED AIR CAN BE DISCHARGED TO THE ATMOSPHERE.HENCE SPACE AND WEIGHT EFFICIENT.NO RETURN PIPELINES REQUIRED.

SAFETY.

CAN BE USED IN HIGH TEMP HIGH PRESSURE SYSTEMS, AS AIR IS NON-INFLAMMABLE.AFTERBURNERS.LIMITATIONS OF PNEUMATICSLIMITED POWER.

DIFFICULT TO MAKE AIRTIGHT JOINTS.

DIFFICULT TO TRACE LEAKS.

DOES NOT PROVIDE ANY INTERNAL LUBRICATION.

APPLICATIONS OF HYDRAULIC AND PNEUMATIC SYSTEMS.

ADVANTAGES AND DISADVANTAGES OF HYDRAULIC AND PNEUMATIC SYSTEMS.

ROLE OF COMPONENTS OF HYDRAULIC AND PNEUMATIC SYSTEMS.

MUST KNOWCONSTRUCTION OF COMPONENTS OF HYDRAULIC SYSTEMS.

PROBLEMS FACED IN A HYDRAULIC SYSTEM.

SHOULD KNOWHenrys law, daltons law, cavitation.COULD KNOWQUESTIONS TO THE CLASSBAFFLES ARE USED IN A HYDRAULIC SYSTEM FOR (PREVENTING SURGES/ LEAKS/ EVAPORATION LOSS)

IN A HYDRAULIC SYSTEM, RESERVOIR IS USED FOR __________________, _______________ AND _______.

PNEUMATIC SYSTEM (LACKS/PROVIDES) INSTANTANEOUS ACTION AND IS (HIGHLY/NOT SO) EFFICIENT AT TRANSMITTING POWER.

THERMAL RELIEF VALVE ARE FITTED IN HYDRAULIC CIRCUITS TO RELIEVE EXCESS PRESSURE/TEMPERATURE DUE TO THERMAL EXPANSION AND ARE SENSITIVE TO PRESSURE/TEMPERATURE.QUESTIONS TO THE CLASSBAFFLES ARE USED IN A HYDRAULIC SYSTEM FOR (PREVENTING SURGES/ LEAKS/ EVAPORATION LOSS)

IN A HYDRAULIC SYSTEM, RESERVOIR IS USED FOR STORING THE FLUID, REMOVAL OF AIR AND COOLING.

PNEUMATIC SYSTEM (LACKS/PROVIDES) INSTANTANEOUS ACTION AND IS (HIGHLY/NOT SO) EFFICIENT AT TRANSMITTING POWER.

THERMAL RELIEF VALVE ARE FITTED IN HYDRAULIC CIRCUITS TO RELIEVE EXCESS (PRESSURE/TEMPERATURE) DUE TO THERMAL EXPANSION AND ARE SENSITIVE TO (PRESSURE/TEMPERATURE).QUESTIONS TO THE CLASS________________________ IS SOMETIMES INCORPORATED TO EQUALISE THE PRESSURE OF THE AIR IN THE HYDRAULIC RESERVOIR. WHAT TYPE OF GAS IS USED TO INFLATE LIFE SAVING JACKETS?

A MILKY APPEARANCE IN THE SIGHT GLASS OF THE HYDRAULIC RESERVOIR IS AN INDICATION OF ____________.

QUESTIONS TO THE CLASSPRESSURE RELIEF VALVE IS SOMETIMES INCORPORATED TO EQUALISE THE PRESSURE OF THE AIR IN THE HYDRAULIC RESERVOIR. WHAT TYPE OF GAS IS USED TO INFLATE LIFE SAVING JACKETS?

A MILKY APPEARANCE IN THE SIGHT GLASS OF THE HYDRAULIC RESERVOIR IS AN INDICATION OF ____________.

QUESTIONS TO THE CLASSPRESSURE RELIEF VALVE IS SOMETIMES INCORPORATED TO EQUALISE THE PRESSURE OF THE AIR IN THE HYDRAULIC RESERVOIR. WHAT TYPE OF GAS IS USED TO INFLATE LIFE SAVING JACKETS?

A MILKY APPEARANCE IN THE SIGHT GLASS OF THE HYDRAULIC RESERVOIR IS AN INDICATION OF AIR IN SYSTEM.

CONCLUSION?