hi friends i have built a catapult glider with the following materials:
1.fuselage:bamboo of 0.2cmthick
2.wings:biofoam
3.tailplane:visitingcard of very tiny thickness of 0.01cm
4.fin:visitingcard of 0.01cm.
i testglided it near by ground at around hot 39celsius at 1.00pm with steady wind not wild.
problem:
1.it is climbing well but in inverted flying and reaches maximum height and lands with a nosedive straightly.
i dont know what could be the reason?please help this beginner
karthik