Wash in wash in wash out how do those wires route?

[PA1195]

Re: Wash in wash in wash out how do those wires route?

Hi Gary,

The 1-5/16" and 30" level schematic that Hank posted is a method that sets that particular rib or location on the span at an incidence angle of 2.5 degrees so I guess it all seems reasonable.

Mine measured 1.55 and 2.0 at that location.

Dave R

Thanks Dave for taking the time to answer this...so summarizing for your case (by referencing the PDF data you determined earlier) initially doing the 1 5/16" Taylorcraft process resulted in:

Left wing root; Ref. angle +4.45*; Left wing tip; Ref. angle +2.05*; washout 2.40*
Right wing root: Ref. angle +4.55*; Right wing tip, Ref. angle +1.70*; washout 2.85*

After initially setting the 1 5/16" did you then eventually adjust the wash to fly right? I expect so as that's usually the case.

Interesting. My wings are flat in comparison (0-0.5* washout) and with VG's exhibit no bad stall behavior or hesitation at liftoff so far. I've had 3 Cubs with that 2.5* washout and they tend to hesitate at liftoff in deep snow or on the water compared to a flatter wing with little to no washout. My Citabria's (Champs in general) had a flat wing and performed like my Taylorcraft in liftoff and stall.

However it's essential to maintain coordinated flight at all times and avoid skidding turns at low airspeed. That's why were there to begin with.

Gary

[Guest]

Re: Wash in wash in wash out how do those wires route?

Thanks Dave for taking the time to answer this...so summarizing for your case (by referencing the PDF data you determined earlier) initially doing the 1 5/16" Taylorcraft process resulted in:

Left wing root; Ref. angle +4.45*; Left wing tip; Ref. angle +2.00*; washout 2.45*
Right wing root: Ref. angle +4.75*; Right wing tip, Ref. angle +1.55*; washout 3.20*

After initially setting the 1 5/16" did you then eventually adjust the wash to fly right? I expect so as that's usually the case.

Interesting. My wings are flat in comparison (0-0.5* washout) and with VG's exhibit no bad stall behavior or hesitation at liftoff so far. I've had 3 Cubs with that 2.5* washout and they tend to hesitate at liftoff in deep snow or on the water compared to a flatter wing with little to no washout. My Citabria's (Champs in general) had a flat wing and performed like my Taylorcraft in liftoff and stall.

However it's essential to maintain coordinated flight at all times and avoid skidding turns at low airspeed. That's why were there to begin with.

Gary

Yes

[Guest]

Re: Wash in wash in wash out how do those wires route?

Hi Hank,

Here is your data.

The twist is more than the 2 degrees I guessed so my interference numbers need to be adjusted accordingly.

Data is a bit different today I was pretty shook by the wing wrinkle the other day so that may explain it.

I taxied too close to a myrtle bush and a fork in a branch caught onto my tip and bent that tip aluminum leading edge. I had not realized that there was damage when it happened. In fact I didn't realize I scraped the bush I thought I taxied into a little ant mound.


Dave R

[PA1195]

Re: Wash in wash in wash out how do those wires route?

Corrected Post #31 above to reflect new wing data from Post #33.

Gary