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PostPosted: Wed Nov 21, 2012 2:11 am 
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Master Sergeant
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Joined: Tue Nov 02, 2004 11:56 pm
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Just how powerful are they?
I have run into a guy who says B-tech lasers can not be very powerful due to various real world reasons like the energy needed in some of the older numbers would burn through feet of iron plating (to melt ~60kg of B-tech armor would require around 200 megajoules), or cook the pilot if assumed the armor spreads the heat, and what naught. He even said that jump jets are garbage as the reactors should have enough thrust to allow a mech to fly at these out puts... from him the novels support his ideas (though he has no memory that the armor is often mentioned as melting down the mech in rivers).

So from the novel perspective how accurate is he?

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PostPosted: Thu Nov 22, 2012 7:27 pm 
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Lieutenant General
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Location: Somewhere between Morgues and Arc-Royal, fighting with the Wolves-in-Exile.
I seem to remember a line something akin to this "If you wonder how he eats and breaths, and other science facts. You should repeat to yourself this is just a show and really should relax."

This is science fiction, not science reality.

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PostPosted: Thu Nov 22, 2012 11:11 pm 
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Commanding General
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Joined: Fri Feb 15, 2002 8:00 pm
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been a while since i read it but I recall a scene from Sword and the Dagger where Ardan Sortek once saw a child on the battlefield get vaporized by a Mech grade LAser. no mentions of which size laser however.


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PostPosted: Sun Jan 20, 2013 1:58 am 
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Commanding General
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Joined: Fri Jan 10, 2003 3:46 pm
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Location: El Dorado
Quote:
Just how powerful are they?
I have run into a guy who says B-tech lasers can not be very powerful due to various real world reasons like the energy needed in some of the older numbers would burn through feet of iron plating (to melt ~60kg of B-tech armor would require around 200 megajoules),
BT armor is usually millimeters to centimeters thick. Since the materials and their densities are pretty well known, it's easy to guess at armor tonnage vs 'Mech armor, and it ain't feet thick.

However, the 200MJ per armor point figure should tell you that BT lasers are very, very powerful. The USAF's Airborne Laser would need 200 seconds to deliver 200MJ.
Quote:
or cook the pilot if assumed the armor spreads the heat
Whatever. Thermal conduction is a slow process. When you dump enough energy into armor plate to destroy 60kg (per point of damage) in less than 10 seconds, there's no melting or widespread conduction. There's localized ablation and surface explosions.
Quote:
He even said that jump jets are garbage as the reactors should have enough thrust to allow a mech to fly at these out puts...
Sure, the jump jets have plenty of thrust to support flight. Once you have the thrust to get a 'Mech off the ground, you've got plenty of thrust to keep them in the air and propel them. However, jump jets don't have the endurance to support flight, which Tech Manual spells out.

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PostPosted: Sun Jan 20, 2013 7:42 pm 
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Test Pilot
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Joined: Fri Jan 25, 2002 8:00 pm
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Location: That flattop, up the well, overhead …
Isn't the armor thickness one of the Embarrassing Open Secrets of Battletech? Sort of like how the engine size is defined by movement rates, and not weapons power draw?

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PostPosted: Mon Jan 21, 2013 10:16 pm 
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MechMeister
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Joined: Thu Sep 13, 2001 8:00 pm
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Location: RCW Enterprises, SC, USA
Quote:
Isn't the armor thickness one of the Embarrassing Open Secrets of Battletech?
Yeah, I think Mac once calculated the armor of BattleShips would be about as thick as mylar or something, considering the size of the ships. :embarrased:

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PostPosted: Mon Jan 21, 2013 10:43 pm 
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Stratego
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Joined: Sat Nov 10, 2001 8:00 pm
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Location: Ft. Hood Texas
It sounds more like he wants a game where everything is science fact and thus needing long winded points verses laser beam vaporizeds the armor around point A etc...as for his jump jet comment this is Battletech not Robotech.

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PostPosted: Tue Jan 22, 2013 5:01 pm 
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Test Pilot
Test Pilot

Joined: Fri Jan 25, 2002 8:00 pm
Posts: 12373
Location: That flattop, up the well, overhead …
Now, now.

Just because this is art doesn't mean we should avoid Realism entirely.

Conversely, some things will have to be thrown out the window to make the game work …

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