Private Pilot Ground School モドキ

C. PERFORMANCE

1. Performance and density
   1. Airplanes' performance determined by air density.
      • More Air Density = More Lift & More Power
   2. The density of air is decreased by following condition
      • High Altitude or Low pressure
      • High temperature
      • High humidity
   3. Low density = Low performance
2. Density altitude
   • Aircraft performance in Standard Atmosphere expressed in altitude to have better idea.
     • to know aircraft performance
   • Standard atmospheric condition.
     • At sea level = 15 degrees C, 29.92 in Hg.
     • Temperature = -2 degrees C/ 1000 ft (about)
     • Pressure = -1 in Hg/1000ft (about)
   • Density altitude Increase = Less Air (density)
     • Performance decrease.
     • Less Lift
     • Less Thrust
     • Slow climb
     • Longer takeoff and landing run
     • More accident (High Altitude Airport during Hot Summer)
   • pressure altitude corrected for nonstandard temperature. (other way to explain)
3. Density Altitude Chart
• to determine density altitude with Pressure Altitude and Temperature
• to predict performance of an aircraft on given day.
4. Pressure Altitude
   • Indicated Altitude corrected for nonstandard pressure.
   • to determine the density altitude (and other performance of an aircraft)
   • Transponder Mode C and Flight Level use pressure altitude
5. Performance Charts and Tables
   • Take off distance chart
   • Landing distance graph
   • Landing distance table
   • Cruise power setting
6. Cross Wind Component Chart
   • on Landing in Strong Wind