http://media.giantbomb.com/uploads/0/2823/407972-the_pillar_of_autumn_super.jpg
http://www.freewebs.com/gamershots/Halo/Pillar%20of%20Autumn%20(front%20view).JPG
Eyeballing length gives us 900 meters length.
ponedjeljak, 30. kolovoza 2010.
.JPG){kind=link}
MAC yields
There are two types of MAC's: ship-based and ODP-based MAC's.
Ship based MAC fires 600 ton slug at 30 000 m/s.
ODP based MAC fires 3000 ton slug at 0.04 c or 11 991 689 m/s.
Ek = 1/2mv^2
So:
Shipboard MAC: 2.7 x 10e14 J or 64.53 kilotons.
SMAC: 2.157 x 10e20 J or 51.55 Gt
Figures from HALO Encyclopedia
-------------------------------------------
Halopedia gives teraton-range yields but that is impossible. For 600 ton slug to reach 0.4 c (120 000 000 m/s) we need 4.32 x 10e21 J, which is out of question with fusion reactors (4.32 yotawatts, if we assume MAC is charged in 1 second).
""Electricity consumption by 107 million U.S. households in 2001 totaled 1,140 billion kW·h" (1.14x1015 W·h). Again assuming 100% conversion efficiency, 6.7 tons of helium-3 would be required for that segment of the energy demand of the United States, 15 to 20 tons given a more realistic end-to-end conversion efficiency.[citation needed]"
That means that PoA needs 7053 tons of fuel for one shot minimum (15 790 to 21 053 tons more optimal estimate). Given that cruiser is stated on Halopedia to be 100 000 tons, that is 7 to 21 % of its mass. Thing are even worse considering that not only that cruiser was supposedly able to fire 3 shots on single charge, without breaking apart, but was able to charge MAC at least several times before refueling - that gives us 200 000 to 1 200 000 tons of fuel - for liquid deuterium (162.4 kg/m^3), that gives us 1 230 000 to 7 389 000 cubic meters of fuel. According to Halopedia, ship is 85 000 000 cubic meters in volume. So, we have no problem with fuel storage (except that you need , but fuel consumption required to recharge MAC in such short time is almost impossible to achieve. Also, at that volume and mass, ship is only 1.176 kilograms per cubic meter. Density of air is 1.2 kg/m^3. So Pillar of Autumn is ligher than air. In short, UNSC does not even need antigravitational technology to keep their ships floating within athmosphere. If volume of armor is 1 800 000 cubic meters, and nothing else is inside ship (not even air), that means density of Titanium-A is 55 kilograms per cubic meter - that density is comparable to styrofoam. If stated mass included air and armor, but nothing else, density of Titanium-A falls down to 0.09 kilograms per cubic meter - 13 times less dense than air.
Another problem with Teraton-range yields is in magnetic coils - in order to achieve 40% of speed of light, or over 130 000 km/s over course of 0.014 miliseconds (0.000014 s) you need acceleration of 9.286 x 10e12 m/s^2. So we have 5.173x10e31 W running throught coil (that is 51 730 000 trillion TW). Or 3.44x10e18 times more than total power production of Earth as of 2008.
One guy on PoA vs E-D post here provided information that it is impossible to run more than 10^18 watts throught electromagnet before it vaporizes. Even if PoA magnetic coil can withstand 10^24 W due to its massive size, this is still 52 million times less than what is required for TT-range shots. However, that would fall in line with original values giving kt-range shots for PoA and GT-range shots for ODP.
EDIT: Article on Halopedia seems to have retconned figures to ones provided here recently (I guess either HALO:Reach or Halo Encyclopedia have to do something with it.
Ship based MAC fires 600 ton slug at 30 000 m/s.
ODP based MAC fires 3000 ton slug at 0.04 c or 11 991 689 m/s.
Ek = 1/2mv^2
So:
Shipboard MAC: 2.7 x 10e14 J or 64.53 kilotons.
SMAC: 2.157 x 10e20 J or 51.55 Gt
Figures from HALO Encyclopedia
-------------------------------------------
Halopedia gives teraton-range yields but that is impossible. For 600 ton slug to reach 0.4 c (120 000 000 m/s) we need 4.32 x 10e21 J, which is out of question with fusion reactors (4.32 yotawatts, if we assume MAC is charged in 1 second).
""Electricity consumption by 107 million U.S. households in 2001 totaled 1,140 billion kW·h" (1.14x1015 W·h). Again assuming 100% conversion efficiency, 6.7 tons of helium-3 would be required for that segment of the energy demand of the United States, 15 to 20 tons given a more realistic end-to-end conversion efficiency.[citation needed]"
That means that PoA needs 7053 tons of fuel for one shot minimum (15 790 to 21 053 tons more optimal estimate). Given that cruiser is stated on Halopedia to be 100 000 tons, that is 7 to 21 % of its mass. Thing are even worse considering that not only that cruiser was supposedly able to fire 3 shots on single charge, without breaking apart, but was able to charge MAC at least several times before refueling - that gives us 200 000 to 1 200 000 tons of fuel - for liquid deuterium (162.4 kg/m^3), that gives us 1 230 000 to 7 389 000 cubic meters of fuel. According to Halopedia, ship is 85 000 000 cubic meters in volume. So, we have no problem with fuel storage (except that you need , but fuel consumption required to recharge MAC in such short time is almost impossible to achieve. Also, at that volume and mass, ship is only 1.176 kilograms per cubic meter. Density of air is 1.2 kg/m^3. So Pillar of Autumn is ligher than air. In short, UNSC does not even need antigravitational technology to keep their ships floating within athmosphere. If volume of armor is 1 800 000 cubic meters, and nothing else is inside ship (not even air), that means density of Titanium-A is 55 kilograms per cubic meter - that density is comparable to styrofoam. If stated mass included air and armor, but nothing else, density of Titanium-A falls down to 0.09 kilograms per cubic meter - 13 times less dense than air.
Another problem with Teraton-range yields is in magnetic coils - in order to achieve 40% of speed of light, or over 130 000 km/s over course of 0.014 miliseconds (0.000014 s) you need acceleration of 9.286 x 10e12 m/s^2. So we have 5.173x10e31 W running throught coil (that is 51 730 000 trillion TW). Or 3.44x10e18 times more than total power production of Earth as of 2008.
One guy on PoA vs E-D post here provided information that it is impossible to run more than 10^18 watts throught electromagnet before it vaporizes. Even if PoA magnetic coil can withstand 10^24 W due to its massive size, this is still 52 million times less than what is required for TT-range shots. However, that would fall in line with original values giving kt-range shots for PoA and GT-range shots for ODP.
EDIT: Article on Halopedia seems to have retconned figures to ones provided here recently (I guess either HALO:Reach or Halo Encyclopedia have to do something with it.
Pretplati se na:
Komentari (Atom)