Unconventional configuration aircraft are not often designed due to many problems, mainly with stability and trim. However, they could be very promising and these problems can be compensated by extraordinary performance characteristics. Therefore, despite the difficulties in the design process, they are chosen, giving a chance to design and build a truly competitive aircraft. Paper presents the analysis of flying qualities of most often used unconventional configurations: canard, flying wing, three surface tandem wing and box wing. The stability analysis is presented in terms of basic static stability and full 6 DoF dynamic analysis. The flying qualities based on airworthiness regulation and MIL specification are presented and commented. Examples of results related to real projects realized during the last decade are presented and discussed.
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