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author | Siddharth11235 | 2019-09-03 18:09:16 +0530 |
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committer | Siddharth11235 | 2019-09-03 18:09:16 +0530 |
commit | b4b6aa36e3486a3544acc52419149b5671f841e9 (patch) | |
tree | 66c1783158f23e6d21c77324156fc57e18d4ac67 /Flight_Eqns/Wind_Axis_eqns/WindForceMoment.mo | |
parent | f5266f634f4fb4fd39933a83551a01cf446256b8 (diff) | |
download | OpenModelica_HIL-master.tar.gz OpenModelica_HIL-master.tar.bz2 OpenModelica_HIL-master.zip |
Diffstat (limited to 'Flight_Eqns/Wind_Axis_eqns/WindForceMoment.mo')
-rw-r--r-- | Flight_Eqns/Wind_Axis_eqns/WindForceMoment.mo | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/Flight_Eqns/Wind_Axis_eqns/WindForceMoment.mo b/Flight_Eqns/Wind_Axis_eqns/WindForceMoment.mo new file mode 100644 index 0000000..9f3c8e4 --- /dev/null +++ b/Flight_Eqns/Wind_Axis_eqns/WindForceMoment.mo @@ -0,0 +1,124 @@ +model WindForceMoment + +import Modelica.Math.Matrices.*; +import Modelica.SIunits.*; +import Modelica.Blocks.Interfaces.*; +import Modelica.Math.Vectors.*; + + + +parameter Real rho = 1.225; +parameter Real g = 9.81; +parameter Real m = 1043.26;//1.56 for zagi +parameter Real S_ref = 16.1651;//reference area +parameter Real C_bar = 1.493 ;//average chord +parameter Real b = 10.911 ;//span + +parameter Real CD0 = 0.036;//= 0.01631;for Zagi +parameter Real K_drag = 0.0830304;//for cessna +parameter Real CD_beta = 0.17;//for cessna +parameter Real CD_alpha= 0.2108; +parameter Real CD_q = 0; +parameter Real CD_delta_e= 0.3045; + +//side force +parameter Real Cy_beta = -0.31;//for cessna +parameter Real Cy_p = -0.037;//for cessna +parameter Real Cy_r = 0.21;//for cessna +parameter Real Cy_delta_r = 0.187; //for cessna +parameter Real Cy_delta_a= 0; //for cessna + +// lift +parameter Real CL0 = 0.25; //for cessna +parameter Real CL_alpha = 4.47;//for cessna +parameter Real CL_q = 3.9;//for cessna +parameter Real CL_delta_e = 0.3476;//for cessna + +// rolling moment +parameter Real Cl_beta = -0.089;//for cessna +parameter Real Cl_p = -0.47;//for cessna +parameter Real Cl_r = 0.096;//for cessna +parameter Real Cl_delta_a= -0.09;//for cessna +parameter Real Cl_delta_r = 0.0147;//for cessna + +// pitching moment +parameter Real Cm0 = -0.02;//for cessna +parameter Real Cm_alpha = -1.8;//for cessna +parameter Real Cm_q = -12.4;//for cessna +parameter Real Cm_delta_e = -1.28;//for cessna + +// yawing moment +parameter Real Cn_beta = 0.065;//for cessna +parameter Real Cn_p = -0.03;//for cessna +parameter Real Cn_r = -0.99;//for cessna +parameter Real Cn_delta_a = -0.0053;//for cessna +parameter Real Cn_delta_r = -0.0657;//for cessna + +Real CL; +Real CD; +Real CY; +Real Cl; +Real Cm; +Real Cn; +Real CX; +Real CZ; + +RealInput thrust annotation( Placement(visible = true, transformation(origin = {-110, 0}, extent = {{-20, -20}, {20, 20}}, rotation = 0), iconTransformation(origin = {-110, 0}, extent = {{-20, -20}, {20, 20}}, rotation = 0)));//Thrust force + +RealInput[3] delta annotation( + Placement(visible = true, transformation(origin = {-110, -50}, extent = {{-20, -20}, {20, 20}}, rotation = 0), iconTransformation(origin = {-110, -50}, extent = {{-20, -20}, {20, 20}}, rotation = 0))); + +RealInput[3] VAB annotation( Placement(visible = true, transformation(origin = {-33, 110}, extent = {{-20, -20}, {20, 20}}, rotation = -90), iconTransformation(origin = {-33, 110}, extent = {{-20, -20}, {20, 20}}, rotation = -90)));//V, alpha, beta + +RealInput[3] omega annotation( Placement(visible = true, transformation(origin = {33, 110}, extent = {{-20, -20}, {20, 20}}, rotation = -90), iconTransformation(origin = {33, 110}, extent = {{-20, -20}, {20, 20}}, rotation = -90)));//Angular velocities + + + +Real V = VAB[1]; +Real alpha = VAB[2]; +Real beta = VAB[3]; + +Real p = omega[1]; +Real q = omega[2]; +Real r = omega[3]; + +Real deltaE = delta[1]; +Real deltaR = delta[2]; +Real deltaA = delta[3]; + +Real qbar = 0.5*rho*V^2; + + + +RealOutput Force[3] annotation( Placement(visible = true, transformation(origin = {110, 33}, extent = {{-20, -20}, {20, 20}}, rotation = 0), iconTransformation(origin = {110, 33}, extent = {{-20, -20}, {20, 20}}, rotation = 0)));//Thrust force + +RealOutput Moment[3] annotation( Placement(visible = true, transformation(origin = {110, -33}, extent = {{-20, -20}, {20, 20}}, rotation = 0), iconTransformation(origin = {110, -33}, extent = {{-20, -20}, {20, 20}}, rotation = 0)));//Thrust force + + + +equation +CL = CL0+CL_alpha*alpha+((CL_q*q*C_bar)/(2*V))+CL_delta_e*deltaE; +//CD = CD0+CD_alpha*alpha+((CD_q*q*C_bar)/(2*V))+CD_delta_e*abs(deltaE) ; +CD = CD0 + K_drag*CL^2; +CY = Cy_beta * beta + Cy_p * (p*b)/(2*V) + Cy_r *(r*b)/(2*V) + Cy_delta_a * deltaA + Cy_delta_r*deltaR;//Sideslip coeff + + +Cl = Cl_beta * beta + Cl_p*(p*b)/(2*V) + Cl_r *(r*b)/(2*V) + Cl_delta_a * deltaA + Cl_delta_r * deltaR;//Rolling coeff + +Cm = Cm0+Cm_alpha*alpha+((Cm_q*q*C_bar)/(2*V))+Cm_delta_e*deltaE;//pitching coeff + +Cn = Cn_beta * beta + Cn_p * (p*b)/(2*V) + Cn_r *(r*b) /(2*V) + Cn_delta_a * deltaA + Cn_delta_r * deltaR;//Yawing coeff + +CX = -CD*cos(alpha) + CL*sin(alpha); +CZ = -CD*sin(alpha) - CL*cos(alpha); + +Force[1] = thrust*cos(alpha)*cos(beta)-0.5*rho*V^2*S_ref*(CD*cos(beta)-CY*sin(beta)); +Force[2] = -thrust*cos(alpha)*sin(beta)+0.5*rho*V^2*S_ref*(CY*cos(beta)+CD*sin(beta)); +Force[3] = 0.5*rho*V^2*S_ref*CL+thrust*sin(alpha); + + +Moment[2] = Cm*qbar*S_ref*C_bar; +Moment[1] = Cl*qbar*S_ref*b; +Moment[3] = Cn*qbar*S_ref*b; + +end WindForceMoment;
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