A friend and I are working on a school project building an airplane to house a synthetic aperature radar. We want to use a composite for the fuselage but are both new to composites and are unsure of what works the best. Our main problem is that landing gear would interfere with the radar antennas so we have to belly land a 10 lb airplane at 15-20 mph. We considered fiberglass because that seems to be a strong and popular material for RC planes but we are afraid it would be too brittle in landing. We have also looked into kevlar because we have been told it has a little more give than glass. We really don't know if one or the other or even a combination of the two would be best or if there are other things out there we haven't considered. Carbon fiber is out because it is too conductive a material. Our fuselage is a trapezoid 26" long with a 6" top and 4" bottom (unusual I know but it the application calls for it). Our idea right now is to have some wooden structural members inside which support the airframe and house the radar, an autopilot and all other necessary flight components. Any advice or ideas would be very much appreciated. Thanks guys, we have been learning a lot from previously posted threads, it has been very helpful.