Predicting Performance

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Predicting Performance. Density Altitude. Pressure altitude corrected for nonstandard temperature. Density Altitude. High Hot Humid. Density Altitude. Common methods of calculating include: Flight computer Density Altitude Chart. Density Altitude. - PowerPoint PPT Presentation

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<ul><li><p>Predicting Performance</p></li><li><p>Density AltitudePressure altitude corrected for nonstandard temperature</p></li><li><p>Density AltitudeHighHot Humid</p></li><li><p>Density AltitudeCommon methods of calculating include:Flight computerDensity Altitude Chart</p></li><li><p>Density AltitudeMoisture - effects not shown on performance chartsHigh Humidity - engine horsepower reduction of 7%Takeoff and Climb performance 10%</p></li><li><p>Surface WindsHeadwind or tailwind componenta 10 knot headwind might improve performance by 10%a 10 knot tailwind might degrade performance by 40%</p></li><li><p>Surface WindsCrosswind componentDemonstrated crosswind component</p></li><li><p>Runway ConditionsGradientgreater than .3% it will be listed in A/FDBraking Effectivenessgood, fair, poor, and nilHydroplaning</p></li><li><p>HydroplaningDynamic Hydroplaning= X 8.6</p><p>= 30 X 8.6 = 47 Kts PSI</p></li><li><p>POHPrior to 1979 Owners Manual varied in content and format</p></li><li><p>Determine the density altitude for these conditionsAltimeter Setting30.35Runway Temperature+25oFAirport Elevation3,894 ft MSL</p></li><li><p>2,000 feet</p></li><li><p>The surface wind is 180 at 30 knots.What is the crosswind component for a RWY 15 landing.</p></li><li><p>15 knots</p></li><li><p>The surface wind is 180 at 20 knots.What is the headwind component for a RWY 12 landing.</p></li><li><p>10 Knots</p></li><li><p>Performance ChartsExperience Test PilotsFactory new AirplanesRepeated Tests using Best ResultsFormat -Table -Graphic</p></li><li><p>Takeoff ChartsGround RollDistance to clear a 50 foot barrier</p></li><li><p>Rate of ClimbTakeoff powerMaximum continuous powerTemperaturePressure AltitudeAirplane Weight</p></li><li><p>Rate of ClimbProvide information on time, fuel and distance required to climb from one altitude to anotherSubtract values from starting altitude</p></li><li><p>Cruise ChartsRange is the distance an airplane can travel with a given amount of fuelEndurance is the length of time the airplane can remain in the air</p></li><li><p>Cruise ChartsMaximum range is at L/Dmax or best glide speedMaximum endurance is about 76% or best glide speedGenerally close to stall speed</p></li><li><p>Descent ChartsNot found for most aircraftOften overlooked by pilotsAs you start flying higher and faster, you must start planning your descents farther from the intended point of landing</p></li><li><p>Glide ChartsWith GPS and the ability to have navigation data to the nearest airfield with the touch of a button, you should be able to mentally calculate if you can glide to the nearest airfield</p></li><li><p>Stall SpeedsAs angle of bank increases, stall speed increasesAs flap deflection is increased, stall speed decreases</p></li><li><p>Landing ChartsGround rollOver a 50 foot obstacle</p></li></ul>

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