true airspeed
Real flight speed
True airspeed is the actual speed of an aircraft relative to the air mass through which it is moving, as opposed to indicated airspeed, which is what cockpit instruments display.
The difference matters because indicated airspeed becomes increasingly inaccurate at higher altitudes where air is thinner.
Pilots and navigation systems use true airspeed to calculate flight times, fuel consumption, and ground speed.
At cruise altitude, true airspeed is typically 10-20% higher than indicated airspeed.
Secured loops in rope
- groundspeedRate across terrain
- velocityDirected rate of motion
- mphVelocity unit abbreviation
- kilometers per hourMetric velocity measurement
Instrument measuring air velocity
- altimeterInstrument measuring elevation
- flight instrumentsCockpit gauges and displays
- cockpit displayPilot's visual interface
- glass cockpitDigital aircraft instrument panel
Position-tracking via estimated motion
- groundspeedRate across terrain
- headingDirectional course traveled
- coursePlanned path forward
- flight planningPre-departure navigation work
waypoint · track · bearing · flight computer
knots
Secured loops in rope
- groundspeedRate across terrain
- velocityDirected rate of motion
- mphVelocity unit abbreviation
anemometer
Instrument measuring air velocity
- altimeterInstrument measuring elevation
- flight instrumentsCockpit gauges and displays
- cockpit displayPilot's visual interface
glass cockpit · analog gauge · digital readout · sensor · transducer
dead reckoning
Position-tracking via estimated motion
- groundspeedRate across terrain
- headingDirectional course traveled
- coursePlanned path forward
flight planning · waypoint · track · bearing · flight computer
angle of attack
Wing-to-airflow orientation
Vs · drag coefficient · buffet