fly/flightgear
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Updates from Tony.

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curt 1999-12-13 21:43:41 +00:00
parent e340190916
commit a872c40389
3 changed files with 46 additions and 38 deletions
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63
src/FDM/LaRCsim/c172_aero.c
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@ -145,7 +145,7 @@ void aero( SCALAR dt, int Initialize ) {
static int init = 0;
static int flap_dir=0;
static int fi=0;
static SCALAR lastFlapHandle=0;
static SCALAR Ai;
@ -155,6 +155,7 @@ void aero( SCALAR dt, int Initialize ) {
static SCALAR CLtable[NCL]={-0.22,0.25,1.02,1.252,1.354,1.44,1.466,1.298,0.97};
static SCALAR flap_ind[Ndf]={0,10,20,30};
static SCALAR flap_times[Ndf]={0,4,2,2};
static SCALAR dCLf[Ndf]={0,0.20,0.30,0.35};
static SCALAR dCdf[Ndf]={0,0.0021,0.0085,0.0191};
static SCALAR dCmf[Ndf]={0,-0.0654,-0.0981,-0.114};
@ -252,51 +253,57 @@ void aero( SCALAR dt, int Initialize ) {
if(Flap_handle < flap_ind[0])
{
Flap_handle=flap_ind[0];
fi=0;
Flap_handle=flap_ind[0];
lastFlapHandle=Flap_handle;
Flap_Position=flap_ind[0];
}
else if(Flap_handle > flap_ind[3])
else if(Flap_handle > flap_ind[Ndf-1])
{
Flap_handle=flap_ind[3];
Flap_Position=flap_ind[3];
fi=Ndf-1;
Flap_handle=flap_ind[fi];
lastFlapHandle=Flap_handle;
Flap_Position=flap_ind[fi];
}
else
{
if((Flap_handle != lastFlapHandle) && (dt > 0))
if(dt <= 0)
Flap_Position=Flap_handle;
else
{
Flaps_In_Transit=1;
}
else if(dt <= 0)
Flap_Position=Flap_handle;
lastFlapHandle=Flap_handle;
if((Flaps_In_Transit) && (dt > 0))
{
if(Flap_Position < 10)
flap_transit_rate = 2.5;
else
flap_transit_rate=5;
if(Flap_handle != lastFlapHandle)
{
Flaps_In_Transit=1;
}
if(Flaps_In_Transit)
{
fi=0;
while(flap_ind[fi] < Flap_handle) { fi++; }
if(Flap_Position < Flap_handle)
flap_dir=1;
{
if(flap_times[fi] > 0)
flap_transit_rate=(flap_ind[fi] - flap_ind[fi-1])/flap_times[fi];
else
flap_transit_rate=(flap_ind[fi] - flap_ind[fi-1])/5;
}
else
flap_dir=-1;
{
if(flap_times[fi+1] > 0)
flap_transit_rate=(flap_ind[fi] - flap_ind[fi+1])/flap_times[fi+1];
else
flap_transit_rate=(flap_ind[fi] - flap_ind[fi+1])/5;
}
if(fabs(Flap_Position - Flap_handle) > dt*flap_transit_rate)
Flap_Position+=flap_dir*flap_transit_rate*dt;
if(fabs(Flap_Position - Flap_handle) < dt*flap_transit_rate)
Flap_Position+=flap_transit_rate*dt;
else
{
Flaps_In_Transit=0;
Flap_Position=Flap_handle;
}
}
}
}
lastFlapHandle=Flap_handle;
}
if(Aft_trim) long_trim = long_trim - trim_inc;

2
src/FDM/LaRCsim/c172_gear.c
View file

@ -36,7 +36,7 @@
$Header$
$Log$
Revision 1.12 1999/12/08 18:48:55 curt
Revision 1.13 1999/12/13 20:43:41 curt
Updates from Tony.

19
src/FDM/LaRCsim/c172_main.c
View file

@ -317,7 +317,7 @@ int main(int argc, char *argv[]) {
IC.psi=0;
IC.weight=2400;
IC.cg=0.25;
IC.flap_handle=30;
IC.flap_handle=10;
IC.long_control=0;
IC.rudder_pedal=0;
@ -333,15 +333,16 @@ int main(int argc, char *argv[]) {
altmin=Altitude;
printf("\tAltitude: %g, Theta: %g, V_down: %g\n\n",Altitude,Theta*RAD_TO_DEG,V_down);
printf("%12s %10s %10s\n","Alpha (deg)","Alpha","Drag");
for(i=-5;i<=22;i++)
while(time < 5.0)
{
IC.alpha=i;
setIC(IC);
ls_loop(0,-1);
printf("%12f %10f %10f\n",Alpha*RAD_TO_DEG,Alpha,cd);
}
printf("Time: %g, Flap_handle: %g, Flap_position: %g, Transit: %d\n",time,Flap_handle,Flap_Position,Flaps_In_Transit);
if(time > 2.5)
Flap_handle=20;
else if (time > 0.5)
Flap_handle=20;
ls_update(1);
time+=0.01;
}