Hi Jan
I've been gathering data up with a view to tuning the Snipes Aerodynamics. It seems likely that the airfoil used on the Camel and Snipe where the same... an RAF-16. I can find no data on that, but there is for the RAF-15:
Not having a degree in aerodynamics to fall back on, I think I would struggle to interpret this for AF 4. I'm hoping I can figure out how to change the other bits of the aerodynamics ok, but I was wondering if based on this data there are any changes you would make to the Camel Airfoil code to be more accurate on the Snipe. I'm assuming it was you who did this Jan and no doubt did a very good job.
I notice on the Camel wings the upper wing is in two parts, which is fine because it was straight. The Snipe top wing is in three section. The two outer portions have a dihedral to match the lower wings, but there is a straight, mid section that has a shorter chord length and I was going to try and have a go at that... Is there anything I should beware of in doing that?. I'm still in the process off reading, re-reading and digesting the stuff on the WIKI about this
KR Matt
// airfoils
<[airfoil][AirfoilHorizontalStabilizer][]
<[float64][Cl0][0.0]>
<[float64][Cd0][0.007]>
<[float64][Cm0][0.0]>
<[float64][ClAlpha][6.28]>
<[float64][CdAlpha][0.65]>
<[float64][CmAlpha][0.11]>
<[float64][ClFlap][2.2]>
<[float64][CdFlap][0.01]>
<[float64][CmFlap][-0.2]>
<[float64][Cd0Base][0.005]>
<[float64][ClAlphaBase][2.4]>
<[float64][CdAlphaBase][1.8]>
<[float64][CmAlphaBase][-0.45]>
<[float64][ClFlapBase][1.1]>
<[float64][AttachedCenter][0.0]>
<[float64][AttachedRange][0.16]>
<[float64][StallRange][0.2]>
<[float64][AttachedCenterFlap][-0.12]>
>
<[airfoil][AirfoilVerticalStabilizer][]
<[float64][Cl0][0.0]>
<[float64][Cd0][0.007]>
<[float64][Cm0][0.0]>
<[float64][ClAlpha][6.28]>
<[float64][CdAlpha][0.65]>
<[float64][CmAlpha][0.11]>
<[float64][ClFlap][2.2]>
<[float64][CdFlap][0.01]>
<[float64][CmFlap][-0.2]>
<[float64][Cd0Base][0.005]>
<[float64][ClAlphaBase][2.4]>
<[float64][CdAlphaBase][1.8]>
<[float64][CmAlphaBase][-0.45]>
<[float64][ClFlapBase][1.1]>
<[float64][AttachedCenter][0.0]>
<[float64][AttachedRange][0.16]>
<[float64][StallRange][0.2]>
<[float64][AttachedCenterFlap][-0.12]>
>
<[airfoil][AirfoilRoot][]
<[float64][Cl0][0.2]>
<[float64][Cd0][0.01]>
<[float64][Cm0][-0.01]>
<[float64][ClAlpha][5.09]>
<[float64][CdAlpha][0.56]>
<[float64][CmAlpha][0.368]>
<[float64][ClFlap][2.1]>
<[float64][CdFlap][0.02]>
<[float64][CmFlap][-0.2]>
<[float64][Cd0Base][0.0]>
<[float64][ClAlphaBase][2.4]>
<[float64][CdAlphaBase][1.8]>
<[float64][CmAlphaBase][-0.45]>
<[float64][ClFlapBase][0.3]>
<[float64][AttachedCenter][-0.11345]>
<[float64][AttachedRange][0.07854]>
<[float64][StallRange][0.10472]>
<[float64][AttachedCenterFlap][-0.12]>
>
<[airfoil][AirfoilTip][]
<[float64][Cl0][0.2]>
<[float64][Cd0][0.01]>
<[float64][Cm0][-0.01]>
<[float64][ClAlpha][5.09]>
<[float64][CdAlpha][0.56]>
<[float64][CmAlpha][0.368]>
<[float64][ClFlap][2.1]>
<[float64][CdFlap][0.02]>
<[float64][CmFlap][-0.2]>
<[float64][Cd0Base][0.0]>
<[float64][ClAlphaBase][2.4]>
<[float64][CdAlphaBase][1.8]>
<[float64][CmAlphaBase][-0.45]>
<[float64][ClFlapBase][0.3]>
<[float64][AttachedCenter][-0.11345]>
<[float64][AttachedRange][0.1]>
<[float64][StallRange][0.2]>
<[float64][AttachedCenterFlap][-0.12]>
>
Display More