Hull Materials

[robject]

Dear Naval Architects,

I've recently merged two hull material tables, and I'm thinking this table is a mess. Does anyone have any suggestions?

Thanks,

Rob


</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">HULL MATERIALS

Metals

Code TL Description U Tough Mass Cr/1000kg MCr/M3

S3 3 Bronze 0.5 6 600 0.0036
S4 4 Steel 1.7 8 200 0.0016
S5 5 Hard_Steel 2 8 250 0.0020
S6a 6 Aluminum 1 3 500 0.0015
S6c 6 Titanium A 3 5 2400 0.0120
S9 9 Advanced_Metals 4 6 1000 0.0060
S9 9 Advanced_Steel 4 6 1000 0.0060
SA 10 CrystalIron 8 10 900 0.0090
SAa 10 Foamed_Aluminum 0.5 1.5 250 0.0004
SBc 11 Foamed_Titanium 1 2.3 625 0.0014
SD 13 Advanced_CrystalIron 10 10 800 0.0080
SD 13 Charged_Alloy 5 7 1200 0.0084
SDa 13 Charged_Aluminum 2 3 1000 0.0030
SEc 14 Charged_Titanium 4 4.5 2500 0.0113
SF 15 Hybrid_CrystalIron 14 9 800 0.0072
SG 16 Hullmetal 12 5 1500 0.0075
SJ 18 Foamed_Hullmetal 6 3 1200 0.0036
SK 20 Sheathed_Hydrogen 12 3 2000 0.0060

Dense

Code TL Description Tough Mass Cr/1000kg MCr/M3

DA 10 Dense 9 10 1500 0.0150
DB 11 Proto_Superdense 13 14 1500 0.0210
DC 12 Superdense 14 15 1000 0.0150
DD 13 Advanced_Superdense 21 15 900 0.0135
DE 14 Bonded_Superdense 28 15 800 0.0120
DH 17 Coherent_Superdense 40 15 2500 0.0375

Special Ferrous

Code TL Description Tough Mass Cr/1000kg MCr/M3

F9 9 Experimental_Crystal 7 11 1000 0.0110
FA 10 CrystalIron 8 10 900 0.0090
FD 13 Advanced_CrystralIro 10 10 800 0.0080
FF 15 Hybrid_CrystalIron 12 9 800 0.0072
FJ 18 Foamed_CrystalIron 14 8 800 0.0064

Laminates
Code TL Description Tough Mass Cr/1000kg MCr/M3

L7 7 Laminate A 2 6 500 0.0030
L8 8 Composite_Laminate A 6 8 1000 0.0080
LA 10 Advanced_Composite 7 9 1500 0.0135
LB 11 StructureComp 11 13 900 0.0117
LE 14 Light_StructureComp 9 7 800 0.0056

Polymers
Code TL Description Tough Mass Cr/1000kg MCr/M3

P5 5 Experimental_Polymer D 0.2 1 100 0.0001
P8 8 Hybrid_Polymer D 0.5 1.5 200 0.0003
P9 9 Sheathed_Foam 0.8 1.8 300 0.0005
P9 9 Advanced_Polymer 1 1 300 0.0003
PB 11 Doped_Polymer C 1 1 400 0.0004
PD 13 Charged_Polymer 2 1 500 0.0005
PE 14 Charged_Foam 2 1 500 0.0005
PJ 19 Coherent_Polymer 8 1 900 0.0009




Material identification code:

Element - Tech Level - (variant) - Utility

Element codes:
S - Metal/Steel
D - Dense
F - Special Ferrous
L - Laminate
P - Polymer

Utility codes:
A - can be used for all construction applications
B - cannot be used for starship hulls
C - cannot be used for either starships or vehicles that can achieve orbit
D - same as class C, except also add armored vehicles</pre>[/QUOTE]

 

[mike wightman]

Could you point out the problems please?

By the way, where'd you get that lot from?

 

[robject]

I'll take these one by one.

</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">S6c 6 Titanium 3 8 1250 0.0100
S6c 6 Titanium 2 4.5 1250 0.0056</pre>[/QUOTE]I'm tempted to take the first entry, unless there's a reason not to.

</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">SG 16 Hullmetal 12 5 1500 0.0075
SG 16 Hullmetal 6 6 1500 0.0090</pre>[/QUOTE]Here, I have no clue. It has to be significantly stronger than TL15 material, but beyond that you got me. Maybe the second one is TL17?

</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">SH 18 Foamed_Hullmetal 6 2.5 750 0.0019
SJ 18 Foamed_Hullmetal 6 3 1200 0.0036</pre>[/QUOTE]I'll likely take the second one, since it again uses a whole number.

Ah, I bet the second one is actually TL17. A typo, how wonderful. Is this stuff from MT?

</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">SK 20 Sheathed_Hydrogen 12 3 2000 0.0060
SK 20 Sheathed_Hydrogen 12 5 2000 0.0100</pre>[/QUOTE]Well what to do here... probably take the best one. TL20, for crying out loud.

</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">L7 7 Laminate 2 6 500 0.0030
L7 7 Laminate 3 6 700 0.0042</pre>[/QUOTE]The chump is stumped. There might be actual numbers for that one...

</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">L8 8 Composite_Laminate 6 5 1000 0.0050
L8 8 Composite_Laminate 6 8 1000 0.0080</pre>[/QUOTE]Ibid.

</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">LA 10 Advanced_Composite 7 7 1500 0.0105
LA 10 Advanced_Composite 7 9 1500 0.0135</pre>[/QUOTE]Hm. I suppose as long as it falls between the values for TL9 and 11 it doesn't matter, but...

</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">LE 14 Light_StructureComp 7 4 800 0.0032
LE 14 Light_StructureComp 9 7 800 0.0056</pre>[/QUOTE]Egads.

</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">P5 5 Experimental_Polymer 0.2 1 100 0.0001
P5 5 Experimental_Polymer 0.5 2 100 0.0002</pre>[/QUOTE]I'd be tempted to take the second one, but "we" probably have real data on it.

</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">P7 7 Hybrid_Polymer 0.8 1.5 200 0.0003
P8 8 Hybrid_Polymer 0.5 1.5 200 0.0003</pre>[/QUOTE]Looks like we lost ground between TL7 and 8. If I swapped the two TLs would it work?

</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">PB 11 Doped_Polymer 1 1 400 0.0004
PB 11 Doped_Polymer 1.5 1 400 0.0004</pre>[/QUOTE]Ahem. I'm tempted to round down, myself.

 

[aramis]

Those are NOT MT figures...

That's FF&S stuff. Mine's not accessible.

 

[Andrew Boulton]

Yup, those are FF&S1 figures. FF&S2 toughness is x1.43.

 

[Andrew Boulton]

According to a 1998 post from Harold D Hale:

</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">
TL Class Type Toughness Mass Price (MCr) (Mw/kL)
6 A Titanium Alloy 3.0 5.0 0.012
7 A Laminate 2.0 6.0 0.003
8 A Composite Laminate 6.0 8.0 0.008
5 D Exper. Plastics 0.2 1.0 0.0001
8 D Hybrid Plastics 0.5 1.5 0.0003
11 C Doped Plastics 1.0 1.0 0.0004 </pre>[/QUOTE]Can't find equivalents for the others.

Materials are identified by a code: A - can be used for all construction
applications; B - cannot be used for starship hulls; C - cannot be used for
either starships or vehicles that can achieve orbit; D - same as class C,
except add vehicle armor

 

[DaveChase]

You left out
concrete, fiber reinforced

Chitin (grown hulls)


Dave Chase

 

[robject]

Originally posted by Andrew Boulton:
Yup, those are FF&S1 figures. FF&S2 toughness is x1.43.

I suspect that accounts for the different values between similar material.

And now for the KCr64 question: why did FFS2 change toughness?

 

[aramis]

FF&S1 was rounded closer to whole numbers, and based upon an older data-set.

 

[robject]

Thanks Aramis.