noun
- The actual speed of an aircraft relative to the ground, accounting for wind speed and direction.
Usage: aviation; plural form of groundspeed
Examples
- The pilot calculated the groundspeeds for different wind conditions before takeoff.
- Headwinds reduced the aircraft's groundspeeds significantly on the eastbound flight.
- The navigator compared the groundspeeds at various altitudes to optimize fuel efficiency.
- Strong tailwinds increased the groundspeeds during the westbound journey.
- Groundspeeds vary depending on the aircraft's airspeed and the prevailing wind patterns.