Trisha26, I think you might want to post some additional information such as where the transducer is mounted, transducer type, some explaination of the type of vechicle and how the data is being taken. What are your concerns? Vibration level too high, this frequency is usually not observed...
I've read your posts and the linked to article, please help me understand a little better. My apologies if I'm regressing this thread.
I've always thought that whirl could not occur at frequencies of 0.5X and above without some type of outside motivational force such as injection of...
Bill gave some good advice but an overhung rotor, operating within the first lateral mode should respond very well to a single plane weight placement. Given your brief discription of the machine, I would assume that this machine operates below the first lateral resonance (critical). Typically...