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1、1OxygenSystem-GeneralRegionalAirlineAcademy2GoalsoftheOxygenSystemsLessonDevelopangeneralunderstandingofaero-medicalfactorsofhighaltitudeoperationsLearnthecommontypesof:RespiratorsOxygenstoragesIntroductiontoPart121systemrelatedregulationsUnderstandthepracticaluseofandlimitationsofeachsystem3
2、TheAtmosphereAsaltitudeincreases:pressuredecreasestemperaturedecreasesAltitudePressureTemperatureFeetMetersHgMbPSIADegreesFDegreesC0029.921013.214.759.0151,000328.0828.86978.214.1755.4132,000656.1627.82943.113.6651.8113,000984.2426.82908.113.1748.39.14,0001,312.3225.84875.112.6944.87.15,0001,
3、640.4024.90843.012.2341.25.16,0001,968.4823.98812.011.7837.63.17,0002,296.5623.09781.911.3434.01.18,0002,624.6422.23752.610.9230.5-0.99,0002,952.7221.39724.310.5126.9-2.810,0003,280.8020.58696.810.1123.3-4.815,0004,921.2016.89571.88.295.5-14.720,0006,561.6013.75465.66.75-12.3-24.625,0008,202.
4、0011.10376.05.45-30.1-34.530,0009,842.408.90300.94.36-47.9-44.435,00011,482.807.04238.43.46-65.7-54.340,00013,123.205.54187.52.72-69.7-56.54CompositionoftheAtmosphereTheoxygensocharacteristicofouratmospherewasalmostallproducedbyplants(cyanobacteriaor,morecolloquially,blue-greenalgae).Thus,the
5、presentcompositionoftheatmosphereis79%nitrogen,20%oxygen,and1%othergases.5RespirationRespiration:Theexchangeofgasesbetweentheorganismandits’environment.CellsinthebodyrequireoxygenforburningfoodRespirationConsistsofInhalation:absorptionofoxygenfromtheatmosphereExpiration:theeliminationofsomeca
6、rbondioxide6Dalton’sLawJohnDaltonstudiedtheeffectofgasesinamixture.HeobservedthattheTotalPressureofagasmixturewasthesumofthePartialPressureofeachgas.Ptotal=P1+P2+P3+.......PnBasicallyeachgasexertsitsownpressure,dependingonthepercentageofthatgasinthemixture(PartialPressure)Stillconfused?7Ifwet
7、henlookatthismixtureasitrelatestoDalton'sLaw,weknow80%ofthepressureofthegasisduetothenitrogeninthemixture20%ofthepressureisduetotheoxygeninthemixture.Werefertotheseaspartialpressures.Thismeansatthesurface,thepressureexertedonusbythenitrogenin
