transform x...

a free idea... a flying machine which is either a plane or helicopter.,but not both. it has two configurations,it can fly like a plane or like a helicopter,but it will not change mode while flying because of weight issues. for long...

so busy...

it is ridiculous. yet the reason is so strong to deal with the many stuffs not yet done. i have to design a starship to go to nearby star system. yes,it is not going to be easy.