On Saturday, April 30, 2016 at 9:07:40 AM UTC-5, kirk.stant wrote:
On Friday, April 29, 2016 at 6:18:00 PM UTC-5, 2G wrote:

The MOST important thing to do is to maintain coordinated flight. Maybe you could put an audible warning on the yaw string!

Tom

I don't agree. The MOST important thing is to not exceed stalling AOA. Below that, yaw (within limits) adds drag (or may help a bit - see discussions about slipping turns while thermalling) and may be less efficient; but you can still control your glider - exceed the critical AOA, and you are a passenger until you reduce it.

Airspeed indicators are required (which are indirect AOA indicators). Yaw strings or slip balls are not.

Kirk
66

I think you got it right, Kirk. Not all of us can be fighter pilots but we all can learn about AOA and how critically important it is in most flight regimes. Every couple of years I read my "Stick and Rudder" by Langewiesche.. He was a very smart man and put things together 70 years ago that are still a mystery to many of us.