private void AdjustThrust()
{
double calculatedThrottle;
//check to see lander is at PrescribedIgnitionAltitude
if (PrescribedIgnitionAltitude >= altitude)
{
calculatedThrottle = guidanceTrajectory.calcThrottle(altitude, velocity);
if (calculatedThrottle > 0)
{
AxialAlpha.SetThrottle(calculatedThrottle);
AxialBeta.SetThrottle(calculatedThrottle);
AxialCharlie.SetThrottle(calculatedThrottle);
}
else
{
AxialAlpha.SetThrottle(0);
AxialBeta.SetThrottle(0);
AxialCharlie.SetThrottle(0);
}
}
}//end IgniteAxialThrusters()
/// <summary>
/// The testing method for the Trajectory Model
/// </summary>
/// <returns>Returns success or failure status values based on tests</returns>
public bool SelfTest()
{
/* For these test cases we test 15 different test cases looking for expected, manually calculated outputs with a known scenario
* Scenario -
* Gravity = 8 m/s^2
* Initial Speed = 8 m/s
* Parachute Release Height = 5000m
* Drop Height = 5m
* Target Descent Velocity Large = 100 m/s
* Target Descent Velocity Small = 5 m/s
* Target Descent Velocity Altitude = 500m
* Thruster Thrust = 24m/s^2
*
* Test Cases (form: altitude, descent velocity) - NOTE: 0.33333333333333331 is used for 1/3 throttle calculation due to under the hood math calculations and comparisons in c#
* 10000m, 1000m/s = 0 throttle
* 10000m, 100m/s = 0 throttle;
* 10000m, 0m/s = 0 throttle
* 4999m, 500m/s = 1 throttle;
* 4999m, 100m/s = 0.33333333333333331 throttle;
* 4999m, 0m/s = 0 throttle;
* 501m, 500m/s = 1 throttle;
* 501m, 100m/s = 0.33333333333333331 throttle;
* 501m, 0m/2 = 0 throttle;
* 250m, 75m/s = 1 throttle;
* 250m, 5m/s = 0.33333333333333331 throttle;
* 250m, 0m/s = .125 throttle;
* 4m, 100m/s = 0 throttle;
* 4m, 5m/s = 0 throttle;
* 4m, 0m/s = 0 throttle;
*/
bool returnVal = true;
TrajectoryModel testTrajectoryModel = new TrajectoryModel(24, 8, 8, 5000, 5, 100, 5, 500);
if (returnVal == true)
{
returnVal = (testTrajectoryModel.calcThrottle(10000, 1000) == 0);
}
if (returnVal == true)
{
returnVal = (testTrajectoryModel.calcThrottle(10000, 100) == 0);
}
if (returnVal == true)
{
returnVal = (testTrajectoryModel.calcThrottle(10000, 0) == 0);
}
if (returnVal == true)
{
returnVal = (testTrajectoryModel.calcThrottle(4999, 500) == 1);
}
if (returnVal == true)
{
returnVal = (testTrajectoryModel.calcThrottle(4999, 100) == 0.33333333333333331);
}
if (returnVal == true)
{
returnVal = (testTrajectoryModel.calcThrottle(4999, 0) == 0);
}
if (returnVal == true)
{
returnVal = (testTrajectoryModel.calcThrottle(501, 500) == 1);
}
if (returnVal == true)
{
returnVal = (testTrajectoryModel.calcThrottle(501, 100) == 0.33333333333333331);
}
if (returnVal == true)
{
returnVal = (testTrajectoryModel.calcThrottle(501, 0) == 0);
}
if (returnVal == true)
{
returnVal = (testTrajectoryModel.calcThrottle(250, 75) == 1);
}
if (returnVal == true)
{
returnVal = (testTrajectoryModel.calcThrottle(250, 5) == 0.33333333333333331);
}
if (returnVal == true)
{
returnVal = (testTrajectoryModel.calcThrottle(250, 0) == .125);
}
if (returnVal == true)
{
returnVal = (testTrajectoryModel.calcThrottle(4, 100) == 0);
}
if (returnVal == true)
{
returnVal = (testTrajectoryModel.calcThrottle(4, 5) == 0);
}
if (returnVal == true)
{
returnVal = (testTrajectoryModel.calcThrottle(4, 0) == 0);
}
return(returnVal);
}