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Archive for August, 2018
Posted by Aer0naught | Aug 04, 2018 @ 10:22 AM | 2,563 Views
Among several projects that I'm wanting to get done, a new wing for my Gambler+ DLG is one that has been on my mind for a while. Ever since I got it last year, I've had a ton of fun chucking the Gambler around and learning to thermal with it. However, I've noticed the plane's limitations, namely launch height and penetration. The S3021 airfoil, while a good airfoil for larger thermal sailplanes, has been superseded by numerous other foils designed specifically for DLGs. The Gambler's designer, Allan Wright, is currently selling an updated version of the Gambler with a slightly increased wingspan and the Drela AG36 airfoil, which seems to work very well from what I've seen.

However, since I crashed my Gambler and rebuilt the fuselage, I'm thinking that building a larger wing would not be very beneficial. During the rebuild process, I somehow removed 1.7 oz/50 grams of weight, which changed the plane's AUW from a porky 7.5 oz/215 g to an underweight 5.8 oz/165 grams. Because of this weight difference, the Gambler is a lot more floaty now, but it also seems to be more sluggish in turns. The slower flying speed and higher percentage of mass in the wing probably contributes to this. All of this has led me to the conclusion that to get the best overall performance from the new fuselage, I should build a wing of the same size or smaller to keep the wing loading from getting too low, improve turning response, and offset any possible strength deficit of the new fuse. The fuselage...Continue Reading