Pitch rate integration in OpenRocket

[mariohm1311]

I was writing some code, which would take data from OR to test a few algorithms. In particular, I needed pitch, yaw and roll rate data. However, when I checked OR, I found something very strange.

Pitch rate (and probably roll/yaw rate) are not continuous. In fact, if you invert the data between alternate regions, it fits perfectly with the vertical orientation data (yaw is negligible, most of the rotation is in the pitch axis). That is, if you take the region from the first jaggie and the second jaggie, flip it around the x-axis, and integrate it, you get the expected results.

Anyone more knowledgeable about OR knows what's up?

 

[UhClem]

In particular, I needed pitch, yaw and roll rate data.

I have some 32KSPS data. The data file is large (128MB, uncompressed) but I can decimate to lower rates.

There would be more but I have been a little slow in building the instrumented flight test vehicle I want to use it in.

 

[mariohm1311]

I have some 32KSPS data. The data file is large (128MB, uncompressed) but I can decimate to lower rates.

Do you happen to have accelerometer and barometer data too? I'm developing a predictor-corrector scheme for 6DoF IMUs + Barometer.

 

[UhClem]

Do you happen to have accelerometer and barometer data too? I'm developing a predictor-corrector scheme for 6DoF IMUs + Barometer.

No pressure data.

 

[mariohm1311]

No pressure data.

I'll take it regardless, might be useful in the future. How do we go about sending the files?