Wright Stuff C

[Rossyspsce]

has anyone tried using the props from heli last year as a ws prop?

One of my friends tried using it. The propeller was too big, and the rubber band was not powerful enough to spin the propeller fast enough for the plane to fly. I'd recommend against it.

Alright thank you!!

Is it possible to use the form, or a model a form after it, to make a prop?

[CrayolaCrayon]

has anyone tried using the props from heli last year as a ws prop?

One of my friends tried using it. The propeller was too big, and the rubber band was not powerful enough to spin the propeller fast enough for the plane to fly. I'd recommend against it.

Alright thank you!!

Is it possible to use the form, or a model a form after it, to make a prop?

I'd recommend just starting with a standard 24cm Ikara prop.

[noah.blome21]

I was first wondering what times people were achieving and second if anyone else is experimenting with using wash out and wash in to control flight circle?

[klastyioer]

I was first wondering what times people were achieving and second if anyone else is experimenting with using wash out and wash in to control flight circle?

i don't want to reveal times but i've been experimenting with wash in and wash out. it works well but wouldn't be my first option for adjusting turn in the plane (unless you are using duco instead of ca). i would avoid doing this and try other methods to adjust the turn if you have bad motor skills.

[Rossyspsce]

can someone explain to me the functional use of the winglets?

[CrayolaCrayon]

can someone explain to me the functional use of the winglets?

I thought they reduced drag.

[bjt4888]

While it’s true that winglets reduce induced drag by shifting the tip vortex further from the flying surface, the primary function in most WS designs is roll control. Winglets used in place of dihedral reduce tendency for the airplane to roll.

Related to an earlier question about use of washin, this setting, when used on the left wing panel, also controls roll.

Brian T

[CrayolaCrayon]

While it’s true that winglets reduce induced drag by shifting the tip vortex further from the flying surface, the primary function in most WS designs is roll control. Winglets used in place of dihedral reduce tendency for the airplane to roll.

Related to an earlier question about use of washin, this setting, when used on the left wing panel, also controls roll.

Brian T

Why do some models have winglets on the stab? I can understand with them on the wings, but are there any benefits to having winglets on the stab? Just more stability?

[bjt4888]

Some lateral surface area in the tail is needed for yaw stability. This can be accomplished by using a fin or stab dihedral or stab winglets. Theoretically, stab winglets would improve stab lift/drag ratio by reducing induced drag. Also, there are some that believe that the winglets reduce stab (or wing) upper surface air pressure of the portion of the stab surface that is in the aerodynamic “shadow” of the winglet.

Winglets and stab tip plates are commonly used in classes of indoor airplanes that are limited in span. Wings and stabs with winglets seem to behave as if they have more span. The drawback to a stab with tip plates is primarily that it is more difficult to build light in weight. Of course, this is not an issue with this year’s “tandem” rules as these designs are usually pretty nose heavy.

Brian T

[Alke]

Hi everyone,

My partner and I just built our first FF model, adjusted CG, and successfully done partial flights. Next, we plan to experiment on full flights with different weights of rubber (1.8, 1.9, 2.0, 2.1, 2.2g) while maintaining a thickness of .094". Is this a good variable to start adjusting? Instead of weight, should we look at rubber density instead?

Also, what's a good way to measure the angle of incidence?

Thanks,

Ethan