velocityModelSpace

0.50

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Description

Description:

Returns the velocity (speed vector) of the vehicle as an array with format [x, y, z]. Vector is in model space.

Groups:

Uncategorised

Syntax

Syntax:

velocityModelSpace vehicle

Parameters:

vehicle: Object

Return Value:

Array

Examples

Example 1:

velocityModelSpace _chopper; comment "Returns [X (left(-) right(+)), Y (backward(-) forward(+)), Z (down(-) up(+))]";

Additional Information

See also:

velocity, setVelocity, setVelocityTransformation

Notes

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Posted on December 11, 2014 - 02:55 (UTC)

Pierre MGI

This function is useful for helicopters as it returns Z vector like an indicator of thrust/load ratio. More or less climb (+) or descent (-) tendency but: As X,Y,Z vectors are relative to vehicle attitude, this function doesn't return a climb or descend rate (as the attitude of the vehicle can be far from horizontal). You can get negative Z vector, in jets, while climbing fast, peeling off in the sky! More or less, you can use as a Z accelerometer factor but invert the sign: +G acceleration (negative vector below the jet) is -Z here.

Posted on June 21, 2015 - 02:36 (UTC)

K.J.

Previous note is physically incorrect. Velocity can not be used to give information about Thrust/Load ratio or G-Forces/acceleration. To get acceleration you have to create the derivative of velocity after time dv/dt -> the difference of velocity between 2 timesteps divided by the time that passed between the 2 steps.