On Friday, September 11, 2020 at 11:30:05 AM UTC-4, wrote:
"The stall speed of a glider increases with the square root of the increase in weight. ... For example, a 540-pound glider has a stalling speed of 40 knots. The pilot adds 300 pounds of water ballast making the new weight 840 pounds. The new stalling speed is approximately 57 knots (square root of 300 + 40 = 57)."
- As some famous physicist said, it's "not even wrong".
Isn't not disclosing the right equation just as useless as the wrong equation?
https://www.quora.com/How-do-you-cal...of-an-aircraft


Thanks for the replies and thoughts. My library is current and diverse. I don't have a copy of the blue book so I was wondering if it was still relevant. I will have a copy soon and read it for historical perspective. Thanks again.