InertiaParameters.asv

%Body inertia
bodyLongitudinalInertia = rocketBodyMass*( ((bodyDiameter/2).^2)/4 + ((bodyLength).^2)/12);
bodyRotationalInertia = rocketBodyMass*(((bodyDiameter/2).^2)/2); 

%Motor inertia: calcualtes the casing and grain separately

%Motor Inertia: Casing
    %Shape is hollow sphere, equations here: https://amesweb.info/inertia/hollow-cylinder-moment-of-inertia.aspx
    motorOuterRadius = motorDiameter/2; 
    innerMotorRadius = motorOuterRadius - casingThickness; 
    % 
    casingRotationalInertia = motorCasingMass/2*(motorOuterRadius.^2+innerMotorRadius.^2);
    casingLongitudinalInertia = motorCasingMass/12*(3*(motorOuterRadius.^2+innerMotorRadius.^2)+motorLength.^2); 

%motor Inertia: grain
    %shape is just a cylinder
    %implementation in simulink, since it changes as mass is lost

%fins
    %based on open rocket implmenetation, finSet.java line 786
    length = P_frontRoot(2) - min(P_backRoot(2),P_backTrail(2)); 

    length2 = length * finArea/finSpan
    width2 = span * finArea/length