Mr. Paul Riesen 0 Report post Posted January 28, 2015 Hi, I am currently working on my bachelor thesis. The Blade Analysis Tool is quit useful for me. The only thing is that I can’t get the max camber value out of the analysis.Looks like the max camber value and max thickness are not a value/distance but a distribution over chord length?!?If I measure the max thickness from the 2D-Plot I get the same results like the PPF gives. Unfortunately, the PPF does not come with the camber value. How do I get the value without plotting everything and measure everything? Then FFW could optimize also with a Lifting Line Code. Regards,Paul Share this post Link to post Share on other sites
Jörg 29 Report post Posted January 28, 2015 Hi Paul, Are you calling the command bladeanalysis(...) in the console (or do you use the PFF import)? This gives you the max camber values and max thickness values as a function of the normalized radius! It is not a function of the radius or similar. See the attachment: these points give you the max camber values (y-coordinate) at a specific radius (x-coordinate). The interpolation of these values generates the radial distribution. Is this your question? CheersJoerg Share this post Link to post Share on other sites
Mr. Paul Riesen 0 Report post Posted February 2, 2015 Hi Joerg, thanks for the quick reply! I use the “bladeanalysis(…)” Feature. If I understood you correctly my camber value for r/R=0,2 is 8% of the radius? And the max thickness value is 26,8%? All other values match the 2D plots.What could be the reason for these unsatisfying results? Many thanks in advances!Paul Share this post Link to post Share on other sites
Jörg 29 Report post Posted February 2, 2015 Hi Paul, In your first screenshot you have a point at r/R of approx. 0.2 (the first point of your spline). The y-coordindate of this point is 0.08. This means that the max camber value is 8% of the chord length, at a radius of r/R=0.2. The same thing for thickness: the values are normalized wrt the chord length. Does this help? CheersJoerg Share this post Link to post Share on other sites
Mr. Paul Riesen 0 Report post Posted February 2, 2015 :) Yes, that’s is. Thanks for the food for thoughts… Share this post Link to post Share on other sites