On Monday, June 1, 2015 at 10:12:22 PM UTC-6, Bill T wrote:
I've never heard of this. YGTBSM!
17 years flying gliders, 12 years as an instructor, moving the spoliers at will, turns or no turns, no problems.

I've never read anything in any glider flying manual, FAA handbook, or aerodynamic study.
Better warn the airlines, no spoiler actuation during turns!

I love to do a flight review with some of those pilots and watch them when I use the spoliers.
BillT

Wait and you will see. I am already starting to get pilots defending this on the comments section of the video! That's why I brought it up. Wait till Europe wakes up tomorrow, sees the video and starts commenting. Should be very interesting!

Bruno - B4