SWEET Ontology
type: Ontology
version info: 2.3
imports: reprMath.owl
imports: prop.owl
imports: propQuantity.owl
imports: phenAtmoWind.owl
imports: relaSpace.owl
imports: relaSci.owl
imports: rela.owl
imports: reprSpaceDirection.owl
imports: reprSciUnits.owl

Acceleration
type: Class
subclass of: MotionProperty
subclass of: PhysicalQuantity
subclass of: Restriction
  has value: meterPerSecondSquared
  on property: hasDefaultUnit
comment: The rate of change with time of the velocity vector of a particle.

Velocity
type: Class
subclass of: MotionProperty
subclass of: PhysicalQuantity
subclass of: Vector
subclass of: Restriction
  has value: meterPerSecond
  on property: hasDefaultUnit
comment: The time rate of change of a position vector; that is, a change of position expressed in terms of speed and direction.

RadialVelocity
type: Class
subclass of: Velocity
comment: The component of a three-dimensional velocity vector oriented along the radial direction from the origin point or axis in polar, cylindrical, or spherical coordinates. In connection with Doppler radar, the radial velocity component is called Doppler velocity.

TangentialAcceleration
type: Class
subclass of: Acceleration
comment: The component of the acceleration directed along the velocity vector (streamline), with magnitude equal to the rate of change of speed of the parcel dV/dt, where V is the speed.

Airspeed
type: Class
subclass of: Speed
comment: Airspeed is the speed of an aircraft relative to the air. There are several different measures of airspeed: indicated airspeed, calibrated airspeed, equivalent airspeed and true airspeed.

GroundSpeed
type: Class
subclass of: Speed
comment: Ground speed is the speed of an aircraft relative to the ground. It is the sum of the aircraft's true airspeed and the current wind and weather conditions; a headwind subtracts from the ground speed, while a tailwind adds to it. Winds at other angles to the heading will have components of either headwind or tailwind as well as a crosswind component.