Thread: Wing flex at higher speed DG-100
View Single Post
  #7  
Old September 11th 19, 06:20 PM posted to rec.aviation.soaring
Jonathan St. Cloud
external usenet poster
  
Posts: 1,463
Default Wing flex at higher speed DG-100
On Wednesday, September 11, 2019 at 7:11:06 AM UTC-7, wrote:
On Wednesday, September 11, 2019 at 10:00:12 AM UTC-4, Senna Van den Bosch wrote:
I noticed for the first time when flying at speeds above 200 km/h, my wingtips start to bend down a bit, has anyone ever noticed this? Glider is a DG-100.

Yep. The twist that helps provide the very docile handling hurts at higher speeds.
The airfoil is not very efficient above 150 or so. Not much reason to fly very fast.
FWIW
UH

What always impressed me was the up down flex of my Nimbus 4 wings. Especially in Sierra turbulence those wing tips must have been bouncing 12 feet.