Side by side comparison of 3m glider crash

This video shows how, in the the left frame, the Brisk performs a turn to stbd across the slope without problem. After pulling back into wind, tracking across the slope in the other direction I repeated the manoeuvre but with disastrous consequences. The plane seems to tip stall, even though it was travelling at the same speed as in the left frame, then spirals into the ground. It was a write-off. If anyone can shed some light on this I'm all ears - and no Brisk.

Category:

Science & Technology

Tags:

• RC
• glider
• model
• plane
• radio
• control
• aircraft
• aerobatics
• Henry
• Jones

[flyingdan111]

It may sound obvious, but just make sure you really let that groundspeed build up on the downwind leg. Rather than pull harder, start the turn earlier, or let the nose drop first if you really want to yank the stick back (allow enough height!) Good luck!

[H65]

I'll be putting that advice into practice, thanks - that's what comes of self-teaching, you should see me ski.

[flyingdan111]

Classic spin I'm afraid. The nose is higher much earlier in the 'fatal' vid, and at the point of departure into the spin you are still pulling hard on the stick. The first one could have VERY easily gone the same way, but thankfully just before the spin the turn is completed, you release the stick and roll out. You could have recovered from the crash, but you would have needed to release back pressure no later than half way around the first revolution to fly off at 180 degrees to intended.

[H65]

Yes, spin indeed. I did the same thing with a Dragon a few weeks ago - pulling back on the stick downwind. It's a problem I have flying on the slope after flying powered gliders on the flat.

[Whopperscotty]

HI,

This is an identical crash the one which W/O my DG1000. The wing is a very high aspect ratio and with a slight lack of speed in the turn, and perhaps a tad too much elevator, the inboard wing will tipstall very easily. The crash video shows the plane was banked at a greater angle than the 1st. There are some good forums on the net about it. Hope this helps.