the third wave "up" or ascending side of the wave is directly above our clubhouse and is formed by a south westerly wind striking the great dividing range. the clubhouse/airstrip is about 30 km downwind of the range in these conditions. the best height achieved was a little over 22000ft by mike maddocks in dg500. think of a stone in shallow water and the resulting ripples in the water

rob izatt
--------- Original Message --------
From: "Discussion of issues relating to Soaring in Australia." <[email protected]>
To: "Discussion of issues relating to Soaring in Australia." <[email protected]>
Subject: Re: [Aus-soaring] >From Avweb
Date: 22/04/2005 22:31


"The rising wave of air on the downwind side of the ... range"?

I have flown powered aircraft many times North and South along the Sierra
Nevadas and have encountered some very powerful standing waves - but not a
rising wave on the downwind side.

I'm inexperienced in gliders. I have great respect for the accuracy of
Avweb, where I first read this quote.

It would be great if a gliding expert could make sense of this.

Boyd Munro

----- Original Message -----
From: "Leigh Bunting" <[EMAIL PROTECTED]>
To: "Soaring List" <[EMAIL PROTECTED]>
Sent: Friday, April 22, 2005 12:13 PM
Subject: [Aus-soaring] From Avweb


SAILPLANE POSTS NORTH AMERICAN DISTANCE RECORD
A California glider pilot has been quietly working away at breaking the
North American distance record, with a flight of 1,212 miles in 13 hours and
17 minutes on April 3, breaking his own unofficial record of 1,130 miles set
eight days earlier. Gordon Boettger flew a 33-year-old Kestrel 17 sailplane
along the rising wave of air on the downwind side of the Sierra Nevada
mountain range during a lee-wave storm. He reached heights of 27,000 feet,
and the canopy of the plane was sometimes covered in ice. Boettger, 37,
soloed in a glider at age 14, flew off aircraft carriers during eight years
in the Navy and now flies MD-11s for Federal Express.

--
Leigh Bunting
Colonel Light Gardens
South Australia
<Open Windows and let the bugs in>




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