/**
* This method returns the time, in days, to get to a target using conventional thrust. Possible units:
*
* - AU (Astronomical Units)
* - km (kilometers)
* - m (meters)
* - ly (light years)
*
* @param $distance
* @param $unit
* @return Time
*/
protected function getTimeToDistance($distance, $unit = 'AU')
{
$distance = new Length($distance, $unit);
$distance->preConvertedSubtract(MathProvider::divide($distance->getValue(), 2, 2));
$acceleration = $this->getAcceleration();
$time = PhysicsProvider::timeFromConstantAccel($distance, $acceleration);
$time->preConvertedAdd($time->getValue());
return $time->to('d');
}
/**
* @param Length $distance
* @param Acceleration $acceleration
*
* @return Time
*/
public static function timeFromConstantAccel(Length $distance, Acceleration $acceleration)
{
$distance->toNative();
$acceleration->toNative();
return new Time(MathProvider::squareRoot(MathProvider::multipleMultiply(2, $distance->getValue(), $acceleration->getValue())));
}