Hello everyone,
I'm currently working on the simulation of the re-entry of a lifting capsule. I already have decently working aerodynamics and all that stuff, but I found somehing i can't quite explain:
The callback function for aerodynamic coefficients works fine and generally the results in the simulation meet the literature data. One thing however does not:
The angle of attack doesn't match the literature value for the entire flight duration. In particular, when the vessel flies at the transsonic regime around Mach 1, the angle of attack is too high (or actually low, since it's a negative angle of attack).
Therefore I have a simple question: To what degree does Orbiter simulate transsonic effects?
In another thread I've read, that Orbiter does simulate the drag induced due to compression shock. From my understanding, this is added to the drag vector, that has it's origin in the centre of pressure. However, since these compression shocks are locally limited, they should also produce a momentum, because they act on the surface and not the centre of mass or pressure.
Does Orbiter simulate the resulting momentum and the resulting attitude change, or does it "only" simulate the quantity of drag?
This would help me very much in finding the source of error.
Thanks in advance for your help
Best regards,
DerNerf
I'm currently working on the simulation of the re-entry of a lifting capsule. I already have decently working aerodynamics and all that stuff, but I found somehing i can't quite explain:
The callback function for aerodynamic coefficients works fine and generally the results in the simulation meet the literature data. One thing however does not:
The angle of attack doesn't match the literature value for the entire flight duration. In particular, when the vessel flies at the transsonic regime around Mach 1, the angle of attack is too high (or actually low, since it's a negative angle of attack).
Therefore I have a simple question: To what degree does Orbiter simulate transsonic effects?
In another thread I've read, that Orbiter does simulate the drag induced due to compression shock. From my understanding, this is added to the drag vector, that has it's origin in the centre of pressure. However, since these compression shocks are locally limited, they should also produce a momentum, because they act on the surface and not the centre of mass or pressure.
Does Orbiter simulate the resulting momentum and the resulting attitude change, or does it "only" simulate the quantity of drag?
This would help me very much in finding the source of error.
Thanks in advance for your help
Best regards,
DerNerf