Hi guys,

Im currently an apprentice and a group of us have been tasked with creating a display to take to events such as recruiting exhibitions etc. We have decided on having a working scale model aircraft to display physics of flight etc. (and so the kids have something to play with). We're only really in the design phases but have got a very tight timescale (mid march) and have a lot to do before then.

We're going to have a flying model within a cage so obviously it has to be tethered. We've also decided that the best route to go would be to have the power cable permanently connected as well to defeat the need for batteries and to make it lighter.

Now, the problem. As this is an exhibition, we need to showcase different things, so were gonna be making some of the components using 3D printing so its not gonna be the lightest. i was wondering, what kind of electronics will we need to have a decent amount of thrust and control but will also keep the weight right down.

Were only going to need control of the flaps and elevators to demonstrate lift etc. so I know that we'll need at least 2 servo motors, but what kind ?

Roughly i know that well need a motor, servo motors and a receiver but ive never messed about with rc aircraft so im not entirely clued up on the subject and need a point in the right direction.

Any help would be much appreciated

Aaron