Glide ratio with full brakes and side slip

Le lundi 2 mai 2016 09:54:46 UTC+2, krasw a écrit*:
On Saturday, 30 April 2016 14:30:08 UTC+3, Jim Kellett wrote:

In a modern glider, the side slip is GREAT for crosswind landings, but the forward slip is darn near useless for losing altitude. I teach forward slips to students only because it's in the PTS, but I teach full spoilers and increased speed to get a steep approach. That works like a charm, produces a glide ratio WAY lower than 1:7, and is a lot easier to manage than it sounds.

This is the EXACT recipe how to destroy DuoDiscus while landing out. It is so exactly opposite to what you should do that it is almost scary. Probably works on 2-33 or whatever only-slightly-glider-shaped-object you teach on, though.

I totally agree. Side slip with a DuoDiscus works perfectly, and it does increase sink significantly.

You will always increase sink by increasing airspeed with full airbrakes - that will help you if you have a long apraoch without obstacles to bleed of the speed near the ground.

Ij you are landing into a 7-800 ft field over a line of trees, you can do that on a Duo by slipping, but increasing speed will result in a total loss claim.