hongshaorou/openrocket
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Clamp beta to minimal value to avoid singularity

Browse Source
This commit is contained in:
SiboVG 2024-10-12 01:01:59 +02:00
parent a5eae08456
commit 7c53e6017b
1 changed files with 4 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
core/src/main/java/info/openrocket/core/aerodynamics/FlightConditions.java
View File

@ -22,6 +22,7 @@ import info.openrocket.core.util.ModID;
* @author Sampo Niskanen <sampo.niskanen@iki.fi>
*/
public class FlightConditions implements Cloneable, ChangeSource, Monitorable {
private static final double MIN_BETA = 0.25;
private List<EventListener> listenerList = new ArrayList<>();
private EventObject event = new EventObject(this);
@ -291,13 +292,10 @@ public class FlightConditions implements Cloneable, ChangeSource, Monitorable {
* @return the beta value.
*/
private static double calculateBeta(double mach) {
if (mach < 0.99999) {
return MathUtil.safeSqrt(1 - mach * mach);
} else if (mach < 1.00001) {
// Clamp to avoid singularity near Mach 1
return MathUtil.safeSqrt(1 - 0.99999 * 0.99999);
if (mach < 1) {
return MathUtil.max(MIN_BETA, MathUtil.safeSqrt(1 - mach * mach));
} else {
return MathUtil.safeSqrt(mach * mach - 1);
return MathUtil.max(MIN_BETA, MathUtil.safeSqrt(mach * mach - 1));
}
}