XPost: sci.physics, sci.military.naval   
   From: fjmccall@gmail.com   
      
   Serg io  wrote:   
      
   >On 5/18/2017 9:19 AM, Robert Clark wrote:   
   >> "Fred J. McCall"  wrote in message   
   >> news:pe8rhc5io10st9eouc05gs6sqkbj1m8j43@4ax.com...   
   >> ==================================================   
   >>>   
   >>> The U.S. Navy is testing ...   
   >>>   
   >> That's "has tested", not "is testing".   
   >>>   
   >>> ... a 30 kilowatt laser ...   
   >>>   
   >> Like I said, A laser at power levels too low to be deployed.   
   >>>   
   >>> ... on the USS Ponce that can take out small boats and small drones.   
   >>>   
   >> Very small boats and drones.   
   >>>   
   >>> The plan is to install a more powerful 150   
   >>> kW laser that can take out larger ships and aircraft:   
   >>>   
   >> That's at least three years out.  And any ship that gets one will need   
   >> at least half a megawatt of spare electrical capacity.  That's quite a   
   >> stretch, given that big ships like the ARLEIGH BURKE class only have   
   >> 7.5 MW total and there is already concern whether they can power   
   >> potential radar upgrades.   
   >>   
   >   
   >the key problem is that large power lasers heat up the airpath and   
   >defocus themselves.   
   >   
   >10kw or more.   
   >   
      
   That's already pretty much solved with the 30 kW testing on USS PONCE   
   and for the 125 kW lasers that are being developed.   
      
      
   --   
   "The reasonable man adapts himself to the world; the unreasonable   
    man persists in trying to adapt the world to himself. Therefore,   
    all progress depends on the unreasonable man."   
                                         --George Bernard Shaw   
      
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