bool Atlantis_SRB::Ignite ()
{
if (GetPropellantMass (ph_main) == SRB_MAX_PROPELLANT_MASS) {
SetThrusterLevel (th_main, 1.0);
t0 = oapiGetSimTime();
bMainEngine = true;
if (launchelev) {
SetTouchdownPoints (tdvtx, ntdvtx); // reset touchdown points
SetSize (23.0);
}
return true;
}
return false;
}
void G422::simEngines(double &dT, APU &eng)
{
if (eng.state == APU::ENG_INOP) return;
//
if (eng.feed & APU::FUEL_PUMP) // simulate fuel line pressure from pumps
{
if (eng.fuelPrs < 1.0) {
double deltaPrs = .22 * dT;
eng.fuelPrs = min(eng.fuelPrs + deltaPrs, 1.0);
}
} else
{
if (eng.fuelPrs > 0.0) {
double deltaPrs = -.12 * (1.0 - eng.pwrPct * .5) * dT;
eng.fuelPrs = max(eng.fuelPrs + deltaPrs, 0.0);
}
}
double fuelLvl = GetPropellantMass(fuel_sys);
if (fuelLvl < .001)
{
eng.fuelPrs = 0.0;
return cueEngines(eng, APU::ENG_STOP);
}
switch(eng.state)
{
case APU::ENG_RUN:
//
// ?? whatever apu does... (just noise for now...)
PlayVesselWave3(SFXID, SFX_APU_RUN, NOLOOP);
SetPropellantMass(fuel_sys, fuelLvl - APU_FUEL_RATE * dT);
return;
case APU::ENG_START:
//
eng.pwrPct += 0.28 * dT;
if (eng.pwrPct >= 1.0)
{
eng.pwrPct = 1.0;
cueEngines(apu, APU::ENG_RUN);
}
return;
case APU::ENG_STOP:
eng.pwrPct -= 0.12 * dT;
if (eng.pwrPct <= 0.0)
{
eng.pwrPct = 0.0;
cueEngines(apu, APU::ENG_INOP);
}
return;
}
}