deltaplano a motore rc

[KNEEBOY]

Good plan philippe,
Being a pilot yourself and having that 'feel' of how they fly and trying to replicate that will give you a big advantage scale or not.

I still stand by that aluminium is a good frame material even for the slow flying stuff,
Check out Antonio giacomo's (sorry if spelt wrong) fine work as proof of this.

theres now alot of info on the internet to help you out in your goal but I will also help in any way I can.

Good luck philippe!

[KNEEBOY]

Just as an fyi for everyone,
This pic is one made by mario to 'prove' that he was doing realistic wings first.
There are two main problems with this..

the information in the pic is incorrect.. the top right pic DID have kingpost and cables and flew lovely once the wing was truly finished (see bottom right pic) and servos were added infact woukd even glider straight and land even without!!
There were four years between the two of my microlights he put in there.

And the other reason is his has got a 't' tail and rudder for control NOT weightshift so what is it he is actually proving?? Im not sure but it was a good effort...

Next page for pic

mark

[KNEEBOY]

Pic

[IDeal38FR]

Bonjour!

Here is a picture from my modification, to avoid keel rolling.
2 glued small pieces of Printed board ; one is glued on the keel, second one on the crossbar. The 2 pieces are liked with 2 "rislan" and allow to tune wing geometry.
Weather is too stormy to test for the moment...
See you later!
Philippe

[KNEEBOY]

Sorry philippe I misunderstood what you meant,
I thought you meant the keel was twisting with the steering inputs instead of transfering that movement to the wing.
this may also happen with yours and takes out alot of the input.

Bracing the part that the arms go onto (the part behind the hangbracket)
Will affectively send that movement down the brace cables to the 'a' frame and up the side flying wires that connect halfway up the leading edge so steering as a real one would and allows big leverage over the wing.

The trouble with sending the steering input throught the keel is that it has no leverage over the wing and the carbon or fibreglass will twist taking out a huge amount of the steering input
mark

[IDeal38FR]

Sorry for my poor English speaking...
You are right, Mark, and explain it better than me : "the keel was twisting with the steering inputs instead of transfering that movement to the wing."
Because I used a small caoutchouc ring to link keel & crossbar. So, the keel was sliding, without transfering movement to the crossbar (and the wing).
As I don't use cables to rig the wing, effectively there is a big leverage that servos have to support.
If I don't succeed in this solution, I will directly make a link between servo and crossbar. But I will to design (again!) a new frame for the wing.
Actually I've tried to be inspired by Antonio's steerings...
See you.
Philippe

[IDeal38FR]

Hello!-again-
It has flown for the 1st time!
Very short flight because of a lot of horseflies which attacked us, but it flies...
Controls are efficient, but I have to increase them.
Trike has a pendulum effect like real.
We will try again soon...
Philippe

[KNEEBOY]

Brilliant news philippe!!

now the real fun starts

mark

[IDeal38FR]

Bonjour à Tous,

Here there are my First (real) flights yesterday before the rain.
I've adjusted the GC.
Motor is very powerful, maybe too!
But steering control doesn't work properly. In particular at right!
Maybe due to the engine torque?
Sure, my 0.8mm links are too weak and bend. But they save my servos during strong landing.
I've updated them today with 1mm steel rod, with save-servo.
It seems to me it's not still the right solution. But it's raining and I can't test it again...

See You!
Philippe

[IDeal38FR]

Bonjour à tous!
Thanks for your advices.
Sure, plastic sheet for the sail is not the best solution for good performances. But my design is a prototype, i've already updated many times (my first sail was too small!).
I know how to sew, and It's easy to find "ripstop" in France. But as it is a complex task to do, I want to be sure of my wing design before sewing one, with battens.
My (big) problem today is to understand why my model turns left very easily, and is very difficult to turn right.
A friend of mine told me to give some neg. angle to the motor. I'm going to try it soon.

Your Microlights seem to fly very well. sure, a long time to rich this goal! What is the carbon rod diameter, you use? I suppose, <4mm. It seems to be very flexible.

See you!
Philippe