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[fixes #1044] Correct cdMach1 for ogive nose interpolator

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The previous cdMach1-value was actually the cd at Mach = 1.3.
This commit is contained in:
Sibo Van Gool 2021-11-04 18:25:35 +01:00
parent 7555c18603
commit 6fb2881889
1 changed files with 3 additions and 2 deletions
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5
core/src/net/sf/openrocket/aerodynamics/barrowman/SymmetricComponentCalc.java
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@ -415,10 +415,11 @@ public class SymmetricComponentCalc extends RocketComponentCalc {
LinearInterpolator interpolator = new LinearInterpolator();
// In the range M = 1 ... 1.3 use polynomial approximation
double cdMach1 = 2.1 * pow2(sinphi) + 0.6019 * sinphi;
double cdMach1 = sinphi;
double cdMach1_3 = 2.1 * pow2(sinphi) + 0.6019 * sinphi;
double[] poly = conicalPolyInterpolator.interpolator(
1.0 * sinphi, cdMach1,
cdMach1, cdMach1_3,
4 / (GAMMA + 1) * (1 - 0.5 * cdMach1), -1.1341 * sinphi
);