I saw that happen to a Nimbus II on aero tow back in the 90s. The pilot
induced a pitch oscillation (PIO) right at lift off, the glider pitched
up to near vertical, and rotated to the right dragging the wingtip and
cartwheeling. That time the pilot survived, though the fire department
trashed the glider cutting him out of the wreck.

On 12/6/2016 9:47 AM, Greg O'Hagan wrote:
At 16:27 06 December 2016, Jonathan St. Cloud wrote:
What happened in this accident to cause the N3 to "flip over" in the
early
stage of launch?

On Tuesday, December 6, 2016 at 7:15:05 AM UTC-8, Jock Proudfoot wrote:
At 14:06 06 December 2016, Jock Proudfoot wrote:

Footage of the accident, in which the victim was dragged upside
down along the runway, was recorded on the centre's CCTV and is
now being studied by accident investigators.

http://www.heraldscotland.com/news/1...pilot_killed_i
n_freak_accident_during_take_off/

See below.
https://assets.publishing.service.go...EENN_06-13.pdf


--
Dan, 5J