Tuesday, 25 September 2012

Contest in Bezmiechowa 2012

The time for maiden flight finally came. Contest of UAVs in Bezmiechowa (rganized avery year by SMIiL) was a perfect ocasion to try out our UAS-X1. Apart from our team of EUROAVIA Rzeszow from Rzeszow University of Technology, four other universities participated in a contest.


Fig. 1 Group photo

 We were trying to finish works over all systems but didn't managed on time. We are going to continue our work to test all systems in flight. Up to now, we tested only structure during maiden flight, without any extra electronic equipment. That was good a decision because some problems accrued with a directional stability and trimming of control surfaces, in a result we had a crash landing in a forest. Good news is that construction turned out to be strong enough to survive impact. 80 % of structure is in a good condition, so now we are analysing a possibility to fix it and put it into air again.


 Fig. 2
 Fig. 3 So this is like our UAS-X1 looks


 Fig. 4 And after a crash landing

Good new is that we tested behaviour in flight, we know what is needed to be improved. The best news is that nothing from basic design needs to be changed, longitudinal stability is really good, behaviour during catapult launch is also perfect (no problems with internal structure during high G-forces) so the future ahead of us is bright. We plan to have next flights before winter.

Movie from the maiden flight



Tuesday, 18 September 2012

Fuselage is READY

Fuselage is READY!!! Now we are installing equipment inside... A maiden flight soon - to be announced.



Manufacturing of fuselage

Hi, it's been a while but we are coming back with great news - we've build fuselage. Have a look how we did it.


We prepared molds for putting a lay up inside. The roughness of surface of molds is very important, thus we worked on it with waterproof sand paper and polishing paste. Right before laminating we covered surfacw with mold release wax and finally after all this proceedings we started with the best part of it - laminating. Have a look...

Fig.1 marking places for access doors

Fig.2 Cutting the nomex core

Fig.3 Cutting the fabrics

 Fig. 4 Laying up carbon fabrics



Fig.5 Lay up ready and waiting for core



Fig.6 Setting a vaccum



 Fig. 7 Under pressure


 Fig.8 Out of mold


Fig.9 With frames and empty place for "insert" for catapult launch fitting







Wednesday, 12 September 2012

Autopilot: Flight-by-wire mode presentation


Note that the roll angle is proportional to the control stick deflection

For more, visit MF Avionics homepage

Autopilot: X-Plane model presentation


Short video presenting volatile properties of our model.

For more, visit MF Avionics homepage


Autopilot: We are ready to simulate

Everything is connected and ready to fly ;-) In the picture below you can see the loop working.





There is only matching controller parameters left.


For more, visit MF Avionics homepage

Autopilot: Simulation loop

We gathered the necessary components to build and run our simulation. Loop's scheme is shown bellow.






It is described in polish, however visual symbols will help you to understand the concept.

For more, visit MF Avionics homepage


Tuesday, 11 September 2012

Autopilot: X-Plane model is completed

We have already built UAS-X1 model using Plane Maker - X-Plane supplement. See the photos.










We will use it for HIL simulation.

For more, visit MF Avionics homepage