silverbug model

i'm working on a secret 50's project disc-shaped VTOL aircraft with mach3 capabilities 
finished the model, now how do i get the proper flight dynamics?
a work in progress image:

can someone help me with this?
the texture is going to be chrome with black jet exhaust dirt on the botom

finished the model, now how do i get the proper flight dynamics?
a work in progress image:

can someone help me with this?
the texture is going to be chrome with black jet exhaust dirt on the botom