The Oz Report Is...
A near-daily, world wide hang gliding news ezine, with reports on competitions, pilot rankings, political issues, fly-ins, the latest technology, ultralight sailplanes, reader feedback and anything else from within the global HG community worthy of coverage. 18161 bytes.
You can join the contest for 2019 here: https://www.xcontest.org/usa/
Only one pilot signed up for Sport Class: https://www.xcontest.org/usa/ranking-hg-sport/
Other countries have similar XContests https://www.xcontest.org/national/
Thanks to Bill Belcourt
Sunday, 18th of November to Saturday, 24th of November, 2018
Blown out on the first day.
Task 1 (only distance and time, not leading or arrival pints):
# Name Glider Time Total 1 Jonny Durand jnr Moyes Gecko 170 02:05:51 1000 2 Vic Hare WW T2C 136 02:10:09 921 3 Guy Hubbard Moyes LS RX 3.5 pro 02:11:01 911 4 Oliver Chitty Moyes RX5 Pro 02:17:43 845 5 Jonas Lobitz 02:28:37 761 6 Trent Brown Moyes LS RX 3.5 02:31:42 740 7 Bruce Wynne Moyes LS RX 4 02:48:32 636 8 Rory Duncan Moyes RX 3 pro 02:55:49 596 9 Andrew Barnes Moyes LS RX 3.5 02:59:33 576
Jonny landing at goal.
There is a well known theory, by aeronautical engineer Paul MacCready, which states that birds and gliders should glide at high airspeed when they have just left a strong thermal and expect to be approaching another strong thermal. But gliding quickly is risky, as the flyer is more likely to hit the ground before reaching the next thermal. So our hypothesis was that these vultures, and other soaring birds, are able to take this risk and glide quickly when they have clues provided by the soaring of others, on the whereabouts of the next thermal.
When we mapped the movements of all the vultures and analysed their gliding airspeeds, we found that on making a decision to leave one thermal and glide to the next vultures which had tapped into this extra information by eavesdropping on the movements of others (they werent flocked together but were watching how the other vultures were acting) chose to take the risk and adopt significantly higher airspeeds than those going it alone.
Thanks to John Simon.