Be Cool, Be Cool (Redux)

It's official: zled lasers use the "adjustable-angle grip inside ring" thing, have their thumb-trigger on the side of the grip (it's pushed down, with the thumb, so bumping it with one's fingers doesn't set off the laser). The springs both hand and long lasers use are the same diameter as their lenses, although I also think there are bigger springs sold for certain applications (I don't think the long-laser's springs will be usable in the hand-laser). This means the standard hand-laser springs are 1.85 centimeters long, and the standard long-laser ones are 4.34 centimeters.

Another thing I decided was to use cylindrical casings for the lasers, rather than hexagonal-prism. They have an accessory-rail underneath their optical cavity casing, the way that, say, the TBL-37 37-millimeter gas-gun does, under its barrel (though not, of course, an actual Picatinny rail).

Changing the shape of the casing necessitates recalculating the heat-exchangers' size (which were based on less precise figures anyway). The long laser's waste heat (at 85% laser-efficiency) is 881.56 watts per firing; the efficiency of microchannel heat-exchangers is 1.5 kilowatts per second per square centimeter. This means that if we want it to only take one second to dump the waste-heat of firing off the entire spring's charge, it'll take 28.21 square centimeters; however, the people designing the thing don't use seconds. If we want it to take one dothã (c. 0.518 seconds), it'll take 52.495 square centimeters of heat-exchanger.

The outer diameter of the long laser is 8.775 centimeters, for a circumference of 27.567 centimeters; since the heat-exchanger is only on the top half, one dimension of the (effectively rectangular) heat-exchanger is 13.784 centimeters. Divide 52.495 by 13.784, and we discover that the long laser's heat-exchanger is a band 3.954 centimeters wide.

Doing the same thing for the hand laser we find a waste-heat of 282.09 watts per firing. It'd take 5.813 square centimeters to dump the waste-heat of emptying out the entire 16-shot spring (assuming one dothã to dump all the heat); the outer diameter of the hand laser's optical cavity is 5.5575 centimeters, meaning its circumference is 17.459 centimeters, and the dimension of a heat-exchanger along its top half is 8.7297 centimeters. That means the width of the heat-exchanger band is a mere 6.658 millimeters.