<br><br><div><span class="gmail_quote">On 9/2/05, <b class="gmail_sendername">Mike Lorrey</b> <<a href="mailto:mlorrey@yahoo.com">mlorrey@yahoo.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br><br>--- Dirk Bruere <<a href="mailto:dirk.bruere@gmail.com">dirk.bruere@gmail.com</a>> wrote:<br><br>> On 9/2/05, Mike Lorrey <<a href="mailto:mlorrey@yahoo.com">mlorrey@yahoo.com</a>> wrote:<br>> >
<br>> > --- Dirk Bruere <<a href="mailto:dirk.bruere@gmail.com">dirk.bruere@gmail.com</a>> wrote:<br>> ><br>> > > On 9/1/05, Mike Lorrey <<a href="mailto:mlorrey@yahoo.com">mlorrey@yahoo.com</a>
> wrote:<br>> ><br>><br><a href="http://www.space.com/businesstechnology/technovel_darpa_lasers_050830.html">http://www.space.com/businesstechnology/technovel_darpa_lasers_050830.html</a><br>> > > >
<br>> > > > The HELLADS is intended to be mountable on tactical aircraft, a<br>> > > Hummer,<br>> > > > or UCAVs and offer performance of 5 kg/kW weapon weight with<br>> 150 kW<br>> > > > beam energy. So it should come in at about 750 lbs in a design
<br>> > > useful<br>> > > > on the battlefield<br>> > > ><br>> > ><br>> > > Better hope the enemy doesn't catch on to wrapping their mortar<br>> > > rounds etc in carbon fibre mat.
<br>> > > I've seen lasers with a higher power density than that stopped<br>> dead<br>> > > by it. Makes a pretty light, though, as it re-radiates.<br>> ><br>> > I'm sure, though I'm not too sure that the mat doesn't abrade the
<br>> bore<br>> > of the mortar. Even so, if it gives off that much heat, radiating<br>> the<br>> > laser energy, it should be easily targetable by a perimter defense<br>> > phalanx gun with a FLIR seeker.
<br>> ><br>><br>> Well, mortar rounds are already quite trackable by radar so using a<br>> HEL to illuminate them seems a bit redundant.<br><br>Hardly. A radar itself can be homed in on with an anti-radiation
<br>missile or other weapon. A FLIR is passive, and thus a better sensor,<br>just as passive sonar is more secure than active sonar.<br><br>> IIRC the US and Israel were talking of deploying a similar system to<br>> hit katyusha rockets fired at settlements. haven't heard much since
<br>> about it though.<br>> Problem is that hardening munitions against laser energy is<br>> relatively easy.<br>> Maybe all hamas/Hezbollah would have to do is either polish the<br>> rockets or<br>> coat them in sawdust/glue. There is not an infinitely long time
<br>> window in which to down these things.<br>><br>> I suspect that the reason it's being deployed on aircraft is to zap<br>> MANPADS<br>> like Stinger that rely on delicate sensors so more low level flying
<br>> can be undertaken in places like Afghanistan.<br><br>Actually, the THEL has been tested against katyushas. And despite the<br>claims of the disparagers, polishing or sawdust and glue doesn't do<br>anything to protect against a high energy laser. Its all well and good
<br>to talk about it, but proving it is another thing.<br><br></blockquote></div><br>
The people making it, buying it and paying for it are the last ones to want to develop a $1 countermeasure.<br>
I'll leave that to Hezbollah after its deployed.<br>
If they can't come up with somthing I'll accept you are correct.<br>
<br>
Dirk<br>