03-10-2012, 06:27 PM
Ben, I think it is not a good idea to have the ailerons go down in order to improve the slow flying charistics of the T28
The ailerons on the T28 are located out towards the tips of the wings.
If you set the radio up to lower them you will increase the angle of attack at the tip of the wings.
It will have the effect of "wash in" which is not what you want, you'd much rather have wash out.
See here for an explanation of wash out http://en.wikipedia.org/wiki/Washout_%28aviation%29
The reason for not having an angle of attack higher at the tips than at the root is, that it will stall at the tip first and because one tip will allways stall before the other it will drop a wing. This is a bad thing when your low and slow !!!
Using flapperons only works well with full length ailerons, ie making the ailerons fall when the elevator rises or lowering them by a seperate switch to slow up.
If you make the ailerons on the T28 rise then you will have extra wash out on the wings. This will slow the model up. Ie it will act like a break but it will not make it fly at a lower air speed. ie it will not reduce it's stall speed. It will just add drag, however it will make it highly resistant to tip stalling.
By all means experiment with it either way. Set it up on a switch so you can turn it on and off in the air if you find you dont like it.
To try it out I'd take off normaly get up high and switch it on see what happins and if you don't like the way it flies then you can allways turn it off again.
Kizza beat me to it
And............. there you go, he's actually done it with the Trojan !!
The ailerons on the T28 are located out towards the tips of the wings.
If you set the radio up to lower them you will increase the angle of attack at the tip of the wings.
It will have the effect of "wash in" which is not what you want, you'd much rather have wash out.
See here for an explanation of wash out http://en.wikipedia.org/wiki/Washout_%28aviation%29
The reason for not having an angle of attack higher at the tips than at the root is, that it will stall at the tip first and because one tip will allways stall before the other it will drop a wing. This is a bad thing when your low and slow !!!
Using flapperons only works well with full length ailerons, ie making the ailerons fall when the elevator rises or lowering them by a seperate switch to slow up.
If you make the ailerons on the T28 rise then you will have extra wash out on the wings. This will slow the model up. Ie it will act like a break but it will not make it fly at a lower air speed. ie it will not reduce it's stall speed. It will just add drag, however it will make it highly resistant to tip stalling.
By all means experiment with it either way. Set it up on a switch so you can turn it on and off in the air if you find you dont like it.
To try it out I'd take off normaly get up high and switch it on see what happins and if you don't like the way it flies then you can allways turn it off again.
Kizza beat me to it
And............. there you go, he's actually done it with the Trojan !!
“The knack of flying is learning how to throw your machine at the ground and miss.”
"When once you have tasted flight, you will forever walk the earth with your thoughts turned skyward, for there you have been, and there you will always long to return." ~Leonardo Da Vinci