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Author Topic: U.S Navy plans to deploy laser off coast of Iran  (Read 5855 times)

Eric Blank

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Re: U.S Navy plans to deploy laser off coast of Iran
« Reply #30 on: April 20, 2013, 06:28:32 pm »

That's not perpetual, and also useless. The heat of Earth's interior is from the planet's formation 4 billion years ago. We do not possess the capabilities to meaningfully hinder or accelerate the cooling process.

Actually it's produced by the decay of radioactive isotopes in the mantle. Early attempts to gauge the age of the Earth attempted to go purely by the expected cooling rate of an iron sphere with Earth's diameter and some estimated initial temperature, but failed to account for radioactive decay. I think the estimate that used that alone was something like 90,000 years. Can't remember now and I can't be arsed to find my textbooks.

Also, using highly-reflective outer plating on fighter jets WOULD result in an increase in the amount of time it takes for lasers to heat and damage the aircraft. Giving you an extra second or two could actually save your life. Also, you could put large mirrors on aircraft to reflect lasers fired from your own ships, allowing the aircraft to in effect redirect the light towards a target out of the ship's line of sight without demanding the aircraft be able to haul and provide power for the laser itself.
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misko27

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Re: U.S Navy plans to deploy laser off coast of Iran
« Reply #31 on: April 20, 2013, 06:39:55 pm »

Yes, given the plans are traveling very, very fast, a second is alot.


Wait, isn' t the navy getting ready to deploy a railgun?
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Remuthra

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Re: U.S Navy plans to deploy laser off coast of Iran
« Reply #32 on: April 20, 2013, 06:41:08 pm »

It's a laser railgun. It fires laser pointers at high speeds by using the power of electromagnetic fields.

Lightningfalcon

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Re: U.S Navy plans to deploy laser off coast of Iran
« Reply #33 on: April 20, 2013, 06:55:55 pm »

Yes, given the plans are traveling very, very fast, a second is alot.


Wait, isn' t the navy getting ready to deploy a railgun?
I have no idea.  The last time I ever really did any sort of in deph research they were planning on doing so.  It wouldn't result in a re-emergence of the battleship, but it make much better naval artillery. 
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Loud Whispers

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Re: U.S Navy plans to deploy laser off coast of Iran
« Reply #34 on: April 20, 2013, 07:39:42 pm »

Wait, isn' t the navy getting ready to deploy a railgun?
Ship and tank mounted railguns
Railgun research was cancelled.
Killed by Senate. $211M had been put into it and the Senate didn't like the idea of putting $60M more into the project.

Max White

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Re: U.S Navy plans to deploy laser off coast of Iran
« Reply #35 on: April 20, 2013, 07:44:22 pm »

???
60m is pretty much a drop in the bucket for the US economy isn't it?

Loud Whispers

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Re: U.S Navy plans to deploy laser off coast of Iran
« Reply #36 on: April 20, 2013, 07:49:51 pm »

???
60m is pretty much a drop in the bucket for the US economy isn't it?
What is the US economy but a multitude of drops? Many drops were thrown away to try and save the whole. And the senate believed they never would have mounted them on ships anyways.

Aptus

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Re: U.S Navy plans to deploy laser off coast of Iran
« Reply #37 on: April 21, 2013, 03:17:38 am »

Boo those politicians, railguns are so much cooler than lasers.
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10ebbor10

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Re: U.S Navy plans to deploy laser off coast of Iran
« Reply #38 on: April 21, 2013, 03:36:06 am »

That's not perpetual, and also useless. The heat of Earth's interior is from the planet's formation 4 billion years ago. We do not possess the capabilities to meaningfully hinder or accelerate the cooling process.
Also, using highly-reflective outer plating on fighter jets WOULD result in an increase in the amount of time it takes for lasers to heat and damage the aircraft. Giving you an extra second or two could actually save your life. Also, you could put large mirrors on aircraft to reflect lasers fired from your own ships, allowing the aircraft to in effect redirect the light towards a target out of the ship's line of sight without demanding the aircraft be able to haul and provide power for the laser itself.
You could also replace your jet engine with a parabolic mirror, and fly on laser power provided by a nearby High Energy laser.

Returning is a bit problematic though.
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MonkeyHead

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Re: U.S Navy plans to deploy laser off coast of Iran
« Reply #39 on: April 21, 2013, 03:41:36 am »

The trouble is, reflective to laser also means reflective to radar, so you would be highly visible. Stealth materials (as in radar absorbing) would also absorb laser light. So, will we see a trade off, or will stealth be more important, as you cant shoot at what you cant see.

sneakey pete

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Re: U.S Navy plans to deploy laser off coast of Iran
« Reply #40 on: April 21, 2013, 05:37:32 am »

Ship and tank mounted railguns
Railgun research was cancelled.

say what? they were testing them a few months ago.
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Loud Whispers

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Re: U.S Navy plans to deploy laser off coast of Iran
« Reply #41 on: April 21, 2013, 06:21:34 am »

Ship and tank mounted railguns
Railgun research was cancelled.
say what? they were testing them a few months ago.
The only articles I could find about any recent testings all dated that the tests took place 2008 - 2010, the project being scrapped in 2011. For some reason it was still reported as far onwards as 2012.

Lightningfalcon

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Re: U.S Navy plans to deploy laser off coast of Iran
« Reply #42 on: April 21, 2013, 07:06:39 am »

Boo those politicians, railguns are so much cooler than lasers.
Who cares if we go bankrupt?  Having a railgun would be just compensation. 
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Loud Whispers

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MonkeyHead

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Re: U.S Navy plans to deploy laser off coast of Iran
« Reply #44 on: January 14, 2014, 02:02:13 pm »

Secret plasma cannons? Quick, turn them on the Somalian pirates...

I mean, how dead do you need to kill something?
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