I am student
I need to "Calculate the proportions of RACER 520 AMELIA aero model from a wing span length of 25cm using given design guidelines to achieve different performance such as long distance, long duration, taking turns and twists etc. Aero model has to be made from card boards only"

Can any one say whether what type of card board can be used for this???

What are the "Given design guidelines" ?

Here
http://www.saeiss.org/competition_2010.asp
http://www.saeiss.org/Downloads/aero-model-temp-2011.pdf