a co-worker once presented an analysis of flight dynamics for an aircraft concept that included an eigenvector that seemed odd. i argued that eigenvector did not make physical sense so the computer model must have a mistake in its formulation. the co-worker blindly trusted the computer rather than thinking about the relation- ship between eigenvectors and physical motion. show your knowledge of that relationship by picking which, if any, of these eigenvectors could relate the short-period mode of an aircraft mounted in a wind tunnel that is able to rotate in pitch but not translate up nor down. you will only get points if you provide a correct and complete explanation to your pick. one or two sentences are enough as long as they clearly demonstrate sufficient reasoning to correlate properties of the eigenvector to properties of the short-period mode.
