void PreFlightMiscPage::load()
{
GeneralConfig *conf = GeneralConfig::instance();
// @AP: Arrival Altitude is always saved as meter.
Altitude minArrival = conf->getSafetyAltitude();
if (m_altUnit == Altitude::meters) // user wants meters
{
m_edtMinimalArrival->setValue((int) rint(minArrival.getMeters()));
}
else // user gets feet
{
m_edtMinimalArrival->setValue((int) rint(minArrival.getFeet()));
}
m_edtArrivalAltitude->setCurrentIndex( conf->getArrivalAltitudeDisplay() );
m_edtQNH->setValue( conf->getQNH() );
m_edtLDTime->setValue( conf->getLDCalculationTime() );
m_bRecordInterval->setValue( conf->getBRecordInterval() );
m_kRecordInterval->setValue( conf->getKRecordInterval() );
m_chkLogAutoStart->setChecked( conf->getLoggerAutostartMode() );
Speed speed;
// speed is stored in Km/h
speed.setKph( GeneralConfig::instance()->getAutoLoggerStartSpeed() );
m_logAutoStartSpeed->setValue( speed.getValueInUnit( m_speedUnit ) );
// save loaded value for change control
m_loadedSpeed = m_logAutoStartSpeed->value();
}
/*
* https://github.com/LK8000/LK8000/tree/master/Common/Distribution/LK8000/_Polars
*
* Format explanation: all lines starting with a * are comments and you can also have empty lines
*
* Field 1: Gross weight of the glider, excluded ballast, when the values were measured
* Field 2: Max ballast you can load (water). It will add wing loading, separately
* Field 3-4, 5-6, 7-8 are couples of speed,sink rate in km/h and m/s .
* these values are used to create an interpolated curve of sink rates
* Field 9: NEW! Normally winpilot does not have this value. Put here at all cost the glider
* surface area in squared meters (m2). If the polar curve you are using does not have
* this value, go on wikipedia to find the wing area for that glider and add it after a comma.
*
* Here is the REAL polar used internally, that you have to create or change, for a glider
* that during test flight was weighting 330kg including pilots and everything, that can load
* extra 90 liters of water ballast, that at 75km/h has a sink rate of 0.7 m/s , at 93 km/h of 0,74
* at 185 km/h sinks at 3.1 m/s and finally that has a wing surface of 10.6 m2.
* Thus, the polar was calculated with a default wing loading of 31.1 kg/m2
* So this is an example
*
* 330, 90, 75.0, -0.7, 93.0, -0.74, 185.00, -3.1, 10.6
*
* Speed Astir.plr file content
*
* LK8000 polar for: Speed Astir
* MassDryGross[kg], MaxWaterBallast[liters], Speed1[km/h], Sink1[m/s], Speed2, Sink2, Speed3, Sink3, WingArea[m2]
* 351, 90, 90, -0.63, 105, -0.72, 157, -2.00, 11.5 // BestLD40@105
*
*/
bool GliderEditorNumPad::readLK8000PolarFile( const QString& fileName, Polar& polar )
{
QFile polarFile( fileName );
if( polarFile.exists() == false )
{
qWarning() << "readLK8000PolarFile:" << fileName << "does not exists!";
return false;
}
if( polarFile.open(QIODevice::ReadOnly) == false )
{
qWarning() << "readLK8000PolarFile:" << fileName << "is not readable!";
return false;
}
// We take the polar file name as gilder type name. The type description
// is sometimes missing in the file.
QString name = QFileInfo(fileName).completeBaseName();
polar.setName( name );
if( name.contains( "PAS") )
{
// Polar of a double seater was selected
polar.setSeats( 2 );
}
QTextStream stream( &polarFile );
int lineNo = 0;
while( !stream.atEnd() )
{
QString line = stream.readLine().trimmed();
lineNo++;
if( line.isEmpty() || line.startsWith("*") || line.startsWith("//") )
{
continue;
}
// Lines can contain at their right end C++ comments. This part must be
// removed first.
QStringList items = line.split( "//" );
items = items.at(0).split( ",", QString::SkipEmptyParts );
if( items.size() < 9 )
{
qWarning() << "Polar file"
<< QFileInfo(fileName).fileName()
<< "line"
<< lineNo
<< "contains to less items:"
<< line;
polarFile.close();
return false;
}
// Extract data, Example is from Spped Astir.
// MassDryGross[kg], MaxWaterBallast[liters], Speed1[km/h], Sink1[m/s], Speed2, Sink2, Speed3, Sink3, WingArea[m2]
// 351, 90, 90, -0.63, 105, -0.72, 157, -2.00, 11.5 // BestLD40@105
for( int i = 0; i < 9; i++ )
{
bool ok;
double dv = items.at(i).trimmed().toDouble(&ok);
Speed speed;
if( ! ok )
{
polarFile.close();
return false;
}
switch(i)
{
case 0:
polar.setGrossWeight( dv );
break;
case 1:
polar.setMaxWater( rint(dv) );
break;
case 2:
speed.setKph( dv );
polar.setV1( speed );
break;
case 3:
speed.setMps( dv );
polar.setW1( speed );
break;
case 4:
speed.setKph( dv );
polar.setV2( speed );
break;
case 5:
speed.setMps( dv );
polar.setW2( speed );
break;
case 6:
speed.setKph( dv );
polar.setV3( speed );
break;
case 7:
speed.setMps( dv );
polar.setW3( speed );
break;
case 8:
polar.setWingArea( dv );
break;
default:
break;
}
}
polar.recalculatePolarData();
polarFile.close();
return true;
}
polarFile.close();
qWarning() << "readLK8000PolarFile:" << fileName << "contains no polar data!";
return false;
}