8A Predicting Performance# Flashcards
Performance
The effectiveness of an aircraft in the jobs it was designed to accomplish
Performance Charts
Used to predict the performance of an airplane in certain conditions. Located in the performance section of the POH.
Interpolation
The process of finding an unknown value between two known values.
Density Altitude
Pressure altitude that has been corrected for nonstandard temperature…. more?
Headwind Component
Portion of the wind which acts straight down the runway toward the airplane.
Crosswind Component
Portion of the wind which acts perpendicular to the runway.
Tailwind Component
Portion of the wind which acts directly on the tail of the airplane.
Runway Gradient
Amount of change in runway height over its length. Usually expressed as a percentage.
Runway Slope
Same as Gradient
Braking Effectiveness
How much braking power you can apply without skidding the tires.
Hydroplaning
Happens when a thin layer of water separates the tires from the runway.
Approach Airspeeds
Airspeed used on approach, specific to flap settings and aircraft weight.
Best Angle-of-Climb Airspeed (Vx)
Provides the greatest gain in altitude in the shortest distance during climb after takeoff.
Best Rate-of-Climb Airspeed (Vy)
Provides the greatest gain in altitude over a period of time.
Cruise Climb Speed
Generally higher than Vx or Vy, and the rate of climb is lower.
Absolute Ceiling
Altitude at which the airplane is unable to climb any further.
Service Ceiling
Altitude where a single-engine airplane is able to maintain a maximum climb of only 100 feet per minute. (Practical Ceiling)
Cruising Speed
Usually chosen to cover the distance in the shortest period of time.
Maximum Level Flight Speed
When the force of total drag equals the force of full thrust.
Maximum Range Speed
Lets you travel the greatest distance for a given amount of fuel. (mpg economy)
Maximum Endurance Speed
The speed and power setting which allows the airplane to remain aloft for the longest possible time.
