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From: Dave C. <dav...@co...> - 2006-04-29 13:12:47
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On Saturday 29 April 2006 07:57 am, Jon S. Berndt wrote: > It seems that in the pitch channel for the A-4 the pilot commands normal > acceleration. The Az error is computed, and that is differenced with pitch > rate. That error drives the elevator. See the A-4 section here: Yes, I just now found the link page at the JSBSim site :( I guess I haven't been paying attention. Anyway, yes it looks like there was some extra damping. I just used aeromatic to generate an A-4 model, then went through and changed the pitch stability derivatives to match those in the Teper paper. I'll work more on it later, but right now I just wanted a model that puts Teper's "official" numbers into the pitch calcs. A short test flight shows an airplane with very light pitch damping, as one would expect. Dave |