Droop Wing Tip Mod...

[avidflyer]

Probably wouldn't make much difference. I remember reading an old study that was done on the different types of wingtips, and it wasn't a whole lot from one to the next. Wish I could find that again. It was kind of interesting. Some government agency did the work. One good thing about the drooped tips is they probably make a good ski for the wing tip to ride on in a good ground loop. :-) Maybe the flaperon gets some protection then and the end rib tail doesn't get broke off. :-( JImChuk

[rv9ralph]

One good thing about the drooped tips is they probably make a good ski for the wing tip to ride on in a good ground loop. :-)

Right you are. My tips are ground down from previous bad handling.

Ralph

[Bud Davidson]

I recall the mentioned study of droop tips, in addition there was a pacer flown with droop tip on one wing. Just to see what happens. No significant effect.
Some of you are familiar with Harry Riblett's work with airfoils. He also had strong opinions about wing tips. Rounded Cub like tips he considered inefficient. He suggested they created drag too far inboard He advised me to square off the tip and consider a slope upward from the bottom of the last rib and flat to the tip from the top of the last rib.. mine was 5 inches out to the squared tip from the last rib. No wind tunnel studies to confirm the effectiveness of this, but I am a strong believer in his work. As I have indicated in the past, Harry was a fellow chapter 240 member (Wilmington, Del)

[Dave S]

...........Harry Riblett's work with airfoils. He also had strong opinions about wing tips. Rounded Cub like tips he considered inefficient. He suggested they created drag too far inboard He advised me to square off the tip and consider a slope upward from the bottom of the last rib and flat to the tip from the top of the last rib.. ...........(Wilmington, Del)

Sounds a little like a hint of what we call the Hoerner wingtip.

I recall about 30+ some years ago there was a lot of talk and experiments and brew-ha-ha with droop tips on more than one type of aircraft.....one of my pals at a local 'port flew a 152 known as "droopy".