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Old 05-15-2007 | 12:17 PM
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iron eagel's Avatar
iron eagel
 
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Default RE: Oddball Design 101 Name: Thruster

Thanks for pointing this out, I think I have a better understanding of what you meant now. I know that the induced drag is very high on this design, what I did not understand was that it will fly much heavier than I would have expected. Thanks for the heads up and getting me to ask some questions about it, I learned a bit more about what I am dealing with.

Running numbers last night I discovered that the tail group is way undersized because of the short tail-moment arm I have in this design. I am in a bit of a quandary of how to deal with this issue. While the glider performs well the numbers say I am way undersized regarding the horizontal stabilizer. Originally I had not even considered using a conventional tail group due to the vectored thrust but had added it when I started to think about dealing with a dead stick issue with minimal aerodynamic control surfaces. At that point it was more of a flying wing concept with just the two strip eleavons for control. Perhaps I am obsessing about this now, the original Idea was just to give me enough control to land the craft in the event of a power out situation were the vectored thrust was not available. Since the stabilator arrangement is just for power out and not for normal flight perhaps this is not as much of a concern as I think it is because of the math...