Gripen. Radio control sport model for .40 power.
Quote: "A Swedish Beauty - build Bo Garstad's .40-size SAAB JAS 39 for fast, jet-style fun.
THE Swedish aircraft manufacturer SAAB is now building and testing the JAS39 Gripen as a fourth generation combat airplane. JAS stands for Jakt (fighter), Attack (attack) and Spaning (reconnaissance), and the Gripen is a kind of aggressive, symbolic eagle.
By the beginning of this year I had completed 72 successful flights with my Gripen, which was not designed to be 100 per cent scale, but a simplified, practical model. I seem to have had more luck with my Gripen model than SAAB had with their first prototype which was lost in strong cross winds, apparently because of an inadequately-developed steering program.
Building and flying this model has been the most challenging project I have tackled. The model had to be capable of being flown from grass without exotic or expensive motors; and it had to look scale in the air despite its semi-scale appearance on the ground. These factors ruled out the use of ducted fans or rear-mounted engines, but permitted the use of a balsa sheet wing for simplicity. Having designed my Draken in the mid-seventies, I had no doubt about the aerodynamic performance of sheet wings; indeed, I think I was perhaps the first to use this technique on semi-scale R/C models.
The building time for the two prototypes was very short at only three weeks. At the end of May 1989, I took to the air with the Gripen, my 107th R/C model, and the exhilarating flight performance fulfilled my expectations..."
Gripen, RCM&E, May 1990.
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