On Saturday, September 7, 2019 at 12:50:44 AM UTC-7, Charlie Quebec wrote:
THIS IS AS CLOSE AS I can find, the more revealing video, it appears it has been taken down, clearly showing the aerobatic glider striking the ground at a 60 degree angle.
This video only shows the crash up until ground contact even you 2G should be able to work out what happened next.

https://m.youtube.com/watch?v=zxbulrrQVig
This link shows screen captures from the video showing every stage of the crash.
https://www.dailymail.co.uk/news/art...es-runway.html
Stick that where the sun don’t shine.

I beg to differ: this video (which I have seen before) does not show the impact at all, which is blocked by the crowd. It is apparent that the wing tip strikes first, then the fuselage. This is not a "frontal impact," but a cart-wheel, which is survivable as the wing is taking most of the energy. A friend of mine survived such an impact in the Alvord Desert with basically no injuries.

The physics are pretty simply: gliders don't have a crush zone - your feet and legs are the crush zone. A vertical impact is not survivable, but a shallow angled crash can be. Here is an example of the former:
https://app.ntsb.gov/pdfgenerator/Re...Final&IType=FA
https://dms.ntsb.gov/public/61500-61...854/620585.pdf
and here is an example of the later:
https://app.ntsb.gov/pdfgenerator/Re...Final&IType=CA
https://www.danlj.org/~danlj/Soaring...hrop-12-17.pdf
Both of these pilots were friends of mine (Bill Gawthrop succumbed to cancer last year).

Tom