Can you warp without Deflector

I have always assume you can not warp without deflector

or can you ?

The Phoenix, I have been looking at some drawings of it
but there has no indication of any deflector technology
and its hull is made from titanium

Mode1 : sand blasting model ( without deflector you are blasting sands on a metal piece )
the (degree of) decay of a shiphull is related to ( certain variables or stuffs )

1) the amount of particles in space ( g / m^3 )
2) acceleration of the particle or craft ( m*s^2 )
3) geometric shape and size of the ship ( ?, some numerical index **** for different shape )
4) and the distant of travel, or speed * time (m)
5) something I may have missed...some sort correcting factor BS stuffs... (I am gamer not a scientist)
6) how far you want to go as a write to the story sound awsome

so should Phoenix be warp capable at all ?

maybe possible

1) because phoenix only flew in solar system , maybe they plotted a path with least amount of particles (maybe just BS lol)
2) only warp 1 , but then again no idea how warp 1 mean for acceleration for particle
3) phoenis is small ( that isnt BS )
4) distant of travel was short ( a couple seconds I think )
5) no idea here ...should be irrelevant
6) Star trek writers go pretty far to make the story sounds awsome.

Model 2 : similar to breaking sound barrier

no deflector, all the particles in space just became a solid wall BOOM!!!!!
basicly anything travel without deflector end up like those buggs on your windshield.
I think coffee worn off after I rage type model 1



Somehow I think it is just all BS but for BS sake,
any smart dude who can figure it out?
Is phoenis BS or Deflector is BS ? or they are all BS ...


Or there is another fake science model we should consider ?