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Make UFO honor elevator trim so it will respond to autopilot. This allows

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you to do altitude hold mode and fly automated ILS approaches.
This commit is contained in:
curt 2005-12-07 23:26:38 +00:00
parent 1990db9ca5
commit ec7f73a5bb
2 changed files with 7 additions and 1 deletions
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7
src/FDM/UFO.cxx
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@ -38,12 +38,14 @@
const double throttle_damp = 0.2; const double throttle_damp = 0.2;
const double aileron_damp = 0.05; const double aileron_damp = 0.05;
const double elevator_damp = 0.05; const double elevator_damp = 0.05;
const double elevator_trim_damp = 0.05;
const double rudder_damp = 0.4; const double rudder_damp = 0.4;
FGUFO::FGUFO( double dt ) FGUFO::FGUFO( double dt )
: Throttle(0.0), : Throttle(0.0),
Aileron(0.0), Aileron(0.0),
Elevator(0.0), Elevator(0.0),
Elevator_Trim(0.0),
Rudder(0.0) Rudder(0.0)
{ {
// set_delta_t( dt ); // set_delta_t( dt );
@ -84,6 +86,9 @@ void FGUFO::update( double dt ) {
+ Aileron * (1 - aileron_damp); + Aileron * (1 - aileron_damp);
Elevator = globals->get_controls()->get_elevator() * elevator_damp Elevator = globals->get_controls()->get_elevator() * elevator_damp
+ Elevator * (1 - elevator_damp); + Elevator * (1 - elevator_damp);
Elevator_Trim = globals->get_controls()->get_elevator_trim()
* elevator_trim_damp
+ Elevator_Trim * (1 - elevator_trim_damp);
Rudder = globals->get_controls()->get_rudder() * rudder_damp Rudder = globals->get_controls()->get_rudder() * rudder_damp
+ Rudder * (1 - rudder_damp); + Rudder * (1 - rudder_damp);
@ -92,7 +97,7 @@ void FGUFO::update( double dt ) {
double old_pitch = get_Theta(); double old_pitch = get_Theta();
double pitch_rate = SGD_PI_4; // assume I will be pitching up double pitch_rate = SGD_PI_4; // assume I will be pitching up
double target_pitch = -Elevator * SGD_PI_2; double target_pitch = (-Elevator - Elevator_Trim) * SGD_PI_2;
// if I am pitching down // if I am pitching down
if (old_pitch > target_pitch) if (old_pitch > target_pitch)

1
src/FDM/UFO.hxx
View file

@ -32,6 +32,7 @@ class FGUFO: public FGInterface {
double Throttle; double Throttle;
double Aileron; double Aileron;
double Elevator; double Elevator;
double Elevator_Trim;
double Rudder; double Rudder;
public: public:
FGUFO( double dt ); FGUFO( double dt );