**Nomenclature**


$$\mathbf{K}\_{\text{i,j}} \qquad \mathbf{K}\_{\text{i,j}} = \frac{\mathbf{P}\_{\text{SearAlors \'{i,j}}}}{\mathbf{P}\_{\text{SearWSS \'{i,j}}}} $$


**Re** Reynolds number

of the pitching moment. With little optimization on the design, the use of an elliptic shape and the research of some expedient to reduce the moment interferences may be the best solution.

It is interesting to examine more in depth some aspects of this study such as the impact of shape and dimensional variation. To do this, it is useful to perform simulations at more angle of attacks and to apply greater length alterations. It is possible to do this remaining in the

Furthermore, for a more in-depth analysis, it is necessary to perform CFD test of supports with the completed sustaining mechanism. This is useful especially for the straight sting (scale 1:80) where testing only the last part of the support is not possible to clarify the interference variations with the length. Therefore, it will be possible also to understand better the influence

Another critical point is to research a solution to decrease the interferences on the pitching moment. To permit this in scale 1:80, there is the possibility to position the sting higher on the SOAR rear surface. This should reduce the flow blockage over the flaps. It is more difficult to realize the same in scale 1:180 (especially for the elliptic sting) for the higher ratio dsDalready

Finally, it is also interesting to estimate the accuracy and the usefulness of the new correction

**6. Recommendations for future activities**

192 Recent Progress in Some Aircraft Technologies

of the Reynolds number on the length.

methods purpose in Section 4.4.

*Β* inclination angle of the support vertical part

*C***'** aerodynamics coefficient corrected for the effect of the support

existent.

**Nomenclature**

*α* angle of attack

**CoG** center of gravity

*d* sting diameter

*l* sting length *M* Mach number

**Ki,j** Ki,j

*D* model base diameter

<sup>=</sup> PSoarAlone i,j PSoarWS i,j

**LC** critical sting length

original constraints for the scale 1:80 where they are less severe.

**VKI** The Von Karman Institute for Fluid Dynamics
