hess8
Member
Two questions:
1. Why does FAR 23 appx A require that symmetrical airfoils be used for horizontal stab? In the ULF-1 ultralight glider designed in the 80s by a very reputable designer, and it's still flying, he used an assymmetrical stab. Seems like it would be a lower-drag way to deflect air up for balancing.
2. Is there any aerodynamic advantage (not structural) of thinner tail planes (say carbon fiber over shaped foam with minimum depth) vs a more traditional airfoil with greater depth, built up with spar, etc.
1. Why does FAR 23 appx A require that symmetrical airfoils be used for horizontal stab? In the ULF-1 ultralight glider designed in the 80s by a very reputable designer, and it's still flying, he used an assymmetrical stab. Seems like it would be a lower-drag way to deflect air up for balancing.
2. Is there any aerodynamic advantage (not structural) of thinner tail planes (say carbon fiber over shaped foam with minimum depth) vs a more traditional airfoil with greater depth, built up with spar, etc.
