Hi James
Good thinking 99. That's exactly what Schleicher has done already with their latest generation of gliders. To get the ASG 29 to 600 kg you need to put 35 litres of water in the main fuselage tank unless you are an extremely heavy pilot. The alternative is to opt for an engine. A second fuselage tank is located in the fin just for C of G adjustments. Kind regards Bernard _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of james dutschke Sent: Tuesday, 21 October 2008 7:56 PM To: [email protected] Subject: [Aus-soaring] where to put the water "At least the things might be lighter to rig but where will the water go? The limit on glider performance is the airfoil performance at low Reynolds numbers. This places a lower limit on the wing chord and we are there already and there is some evidence that thinner wings won't be better (DG600 wing was 11% t/c). So the most you'll do is reduce structure weight but with about the same wing area. This just means more water to get the wing loading and we're running out of wing volume already." Put it in the fuze. Provided the wings can be made strong enough, putting ballast in the fuze is potentially a better option than/ or as well as in the wing anyway. Less rolling inertia, less inertia in a spin, easier control on takeoff during aerotow, more accesable for maintenece, less plumbing, less surface area for a given volume> take longer to freeze at altitude, etc etc.
_______________________________________________ Aus-soaring mailing list [email protected] To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring
