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AHL deck anomalies

Hemdian

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Baron
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A friend of mine is thinking of having a go at modeling the AHL (seems to be a popular choice with computer modelers). I was going through the various references available of AHLs and noted a few anomalies:
  • Standard deck height is 3 meters (including the deck’s thickness). The two fighter hanger decks (69 and 71) are shown in MT’s “Arrival Vengeance” as triple height (so 9 meters). Yet in CT Supplement 6 the text describes them as 18 meters high each. This is more than academic as these decks both have an external airlock (for fighter recovery), so the deck height has an external affect. As the carried fighters are supposed to fit within this, and they appear to be 12 meters long, I think the 18 meter height is more likely.

  • The last deck, the Boat Dock Deck, is also problematic. Here, non-fighter small craft are supposed to dock by sliding into tubes that open onto this deck. Four such docks are 3 meter diameter, which would fit the gunboat mentioned in the text and on the classic plans. Now, although they would usually go in the fighter hanger, if one were to use the boat dock deck, and that deck were standard height, then only 3 meters of the 12 meter long gunboat would be inside … the other 9 meters would be hanging out the back in space. Which would look a little odd. I think at least half should be inside, if not more. Let’s say it should be double standard height (6 meters).

  • 80 regular decks (3 meters each) plus 2 hangers (18 meters each) plus the lounge (a hemisphere with a radius – and thus height – of 10.5 meters) plus the double height boat dock deck = 292.5 meters. (But the CT text states the length is 405 meters.)

Has anyone else looked at these issues? What did you do?
 
If I recall when last starting and again not finishing this I took the regular decks to be 4.5m (in the text somewhere? or just reverse engineered from the length?) with the between spaces being fuel and such (the extra 1.5m per deck). I seem to recall mine working out to the stated 405m but doing the numbers with your list comes to 412.5m. Closer :) I'll have to see if I can track down the work I was doing on it last. Might have been in a thread here on CotI but I can't say just how long ago that was, might have been a couple years or more now.

EDIT: Had a minute, think I got lucky and found it right off:

http://www.travellerrpg.com/CotI/Discuss/showthread.php?t=14898
 
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As we have learned in the "Depicting Starship" thread, deckplans can be misleading as well as the descriptions given by the designer. My suggestion to you is to work through the design and find it's faults then correct them to fit the design or make a brand new ship.

I do it all the time. :)
 
Supplement 5 p14 said:
The commercial ships removed their gunnery, converting all available space to cargo decks. In addition, the hangar decks were removed, and also converted to cargo holds. Each hangar deck was oversize, measuring eighteen (rather than 4.5) meters in height, and each yielded a single cargo deck with four times the standard capacity.

I've always assumed that decks have a floor to ceiling height of 3 meters, and 1.5 meters of 'other stuff' between each deck - the bulhead material for the deck itself, floor and cieling conduits for cabling, life support etc.
 
I've always assumed that decks have a floor to ceiling height of 3 meters, and 1.5 meters of 'other stuff' between each deck - the bulhead material for the deck itself, floor and cieling conduits for cabling, life support etc.

Yes, but other ships (those with 3m decks) also have a requirement for this. I've always assumed that about 0.5m of the 3m was for that. So unless AHLs need more than normal ceiling stuff ...
 
Yes, but other ships (those with 3m decks) also have a requirement for this. I've always assumed that about 0.5m of the 3m was for that. So unless AHLs need more than normal ceiling stuff ...

Pehaps the AHL architect liked high ceilings, or had shares in a hull material company.
 
IIRC there were several fuel decks.

There are many fuel decks specified. But at the moment the only plausible explanation for the extra 1.5m per deck is additional fuel buffers. (I use the term “plausible explanation” advisedly as it isn’t very plausible at all.)

If I were reworking the interior I’d be inclined to amalgamate all those regular fuel decks and fuel buffers into just 5 actual fuel tanks (internally divided into cells to reduce lost fuel during hull breach situations) ... and to keep the deck plan count right keep the specified number of monitoring stations (one on every ‘fuel deck’), just spread out a bit more. The only issue with that (and this affects modelling the exterior) is that the position along the hull of some of the gunnery decks change: the gap between decks 35 and 47 shrinks (by 18m), and deck 70 is closer to the back (by 21m).

As for the new modeling exercise, in trying to adhere to as many parts of conflicting canon as possible, it looks like the Ad Astra mini is the most accurate depiction todate in terms of overall shape. (The MgT plans fail on the side pods: they are supposed to contain the M-drive but the MgT plans show them stuffed with nothing but missiles.)
 
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