Thanks Anthony.
The final question asked of Wil re assymetric water ballast merits further comment particularly for those who fly sailplanes with bags instead of tanks. I believe good ballast bags far outweigh the problems exhibited by rigid tanks which often leak into the surrounding structure. Having said that I don’t know of any “bagged” tank that is not extended and held in place by a rear cord. In reality bags should be held by two cords. One at its rear as is the norm but also one at its front to eliminate the possibility of its leading edge falling over the aft edge and becoming twisted. Generally a sailplane will not display an imbalance until stalled. One wing doesn’t know it’s heavier than its partner until then. A number of prototype sailplanes have been lost while testing their ability to remain controllable at the stall with max. imbalance Regards Noel. From: Anthony Smith [mailto:[email protected]] Sent: Sunday, August 27, 2017 6:32 PM To: 'Discussion of issues relating to Soaring in Australia.'; 'Gliding Australia Forum' Subject: [gfaforum] RE: [Aus-soaring] American Soaring Symposia Part of the Wil Schumann paper is here: http://www.betsybyars.com/guy/soaring_symposia/72-modif.html From: Aus-soaring [mailto:[email protected]] On Behalf Of Ron Sanders Sent: Sunday, 27 August 2017 6:22 PM To: Gliding Australia Forum <[email protected]>; Discussion of issues relating to Soaring in Australia. <[email protected]> Subject: [Aus-soaring] American Soaring Symposia Any body got any idea where is can get any of these publications from the seventies?? Wil Schumann did a clean up of a libelle that i would like to read about again. Ron -- You received this message because you are subscribed to the Google Groups "Gliding Australia Forum" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/a/glidingaustralia.org/group/gfaforum/.
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