The dream is always the same: being able to foot-launch from a hill with the highest possible gliding performance. In other words, that means reducing drag to the minimum, and in order to do so, wetted area must be reduced to the minimum in order to reduce parassite drag. Profile and induced drag are to be minimised by working on the right wing section selection and wing platform configuration. In that specific case, since the architecture is close to a traditional one, wing platform should be optimised in order to get closer to an elliptic lift distribution.
In the next pictures, i've sketched some design variation of the same basic concept:
Picture 1: v-tail |
Picture 2: v-tail |
Picture 3: traditional tail configuration |
Third picture shows a bit more traditional configuration for the tail. One of the potential design issues is connected with the short tail harm. This can be achievable only using low Cm wing sections and a big tail area. Unfortunately a low Cm sections usually is also having a low CL max....
A solution could be to increase tail authority by designing a quite extended vertical fin.
Comments are more than welcome!
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