Block speeds and wing loadingsfurther to my earlier note, I've just realised you can download Maurie Bradney's "Flying Further & Faster" directly from the GFA site - very good of them I must say.
----- Original Message ----- From: Dave Shorter To: Discussion of issues relating to Soaring in Australia. Sent: Tuesday, July 10, 2007 5:47 PM Subject: Re: [Aus-soaring] Block speeds and wing loadings Hi Derek, There are a couple of very good references you should read - An old book "New Soaring Pilot" by Ann and Lorne Welch and Frank Irving gives one of the best theoretical explanations of McCready theory and speed to fly. Flying block speeds is just an extension of this theory. Sadly it seems that GFA book sales no longer have this title in stock, but well worth reading. A more recent and very practical discussion on speed to fly, and ballast is in Maurie Bradney's "Flying Further and Faster" pp20-25. This will cost you the princely sum of $19.80 from GFA sales. Highly recommended to get a good practical grasp of how fast and how heavy. All calcs depend on establishing an average thermal strength (or more precisely, the next thermal's strength) which is pretty hard to assess. Remember the average achieved climb rate is normally very much less than what we see on the averager, and its a pretty good day when the day's achieved average is better than 5 knts. All the answers you derive are still highly subjective as they depend completely on your assessment of the day's strength. Most fast competetive pilots I know seem to know "what feels right" and fly at that speed. regards Dave ----- Original Message ----- From: Derek Ruddock To: Discussion of issues relating to Soaring in Australia. Sent: Tuesday, July 10, 2007 12:05 PM Subject: [Aus-soaring] Block speeds and wing loadings Can anyone give some pointers for how to calculate the block speeds and optimum wing loadings for a particular glider? Examples from anyone who has already performed the leg work would be appreciated ------------------------------------------------------------------------------ _______________________________________________ Aus-soaring mailing list [email protected] To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring E-mail message checked by PC Tools Spyware Doctor (5.0.0.186) Database version: 5.07690 http://www.pctools.com/spyware-doctor/
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