Re: RF Conductivity of thin Mo film

Mark Fergerson wrote:
> Peter Simon wrote:
>
> > "Mark Fergerson" <[EMAIL PROTECTED]> wrote in message
> > news:[EMAIL PROTECTED]
> >
> > >   Right. Is the physical layout absolutely fixed? Can you
> > > relocate the radome so it's out of the exhaust plume(s)?
>
>
>   Ugh. I assume there's an array of thrusters; can they be rearranged 
> such that none of their plumes reach the antenna structure or aren't hot 
> enough to sputter bits off it by the time they do reach it? By 
> rearranged I mean "detaching", rotating, and "reattaching" the entire 
> thruster array so to speak without disturbing the relationship to the 
> craft's C.G. It should "just" be a matter of relocating the thruster 
> attachment points and rewriting some software. Or the thrusters could be 
> boomed out farther if launch volume and weight allow. Are folding booms 
> considered reliable these days?


Well, as I recall even in laser ablation of oxides materials in a hard 
vacuum with a distribution of particles that went as (cos (theata))^10 
and with an angle of 45 degrees between the laser beam and the normal of 
the target I needed to clean the windows every six months. I don't think 
the thursters have as sharp of distribution of particles as I had; 
though, I could wrong on that point.