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When the Stuka entered it's dive, the siren's brake was released as the dive flaps were deployed. Once the dive brakes were retracted, the siren's brake was reset. He also told me that the brakes sometimes didn't reset entirely, and the poor pilot/crewman had to listen to the siren turning slowly all the way back to base...
That would have drove me insane...lol
Anyway, hope this helps shed some light on that.
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