jagged lake
I wanted to keep the original requirements and footprint similar while also modelling it similar to that of a real HP/LP steam turbine. The controller fits at the bottom center of the multi, with hatches bring able to go along the bottom or middle "rings". The concept of the "16 for the price of 12" and this tiered design had me think of having 4 "main" turbine shafts at "high pressure" with 8 "auxiliary" outputs at "low pressure" before it reaches the output. The idea of a Main/Aux Turbine Mechanic comes from this to differentiate it from "haha XLST is just chunky LST"
A similar design concept could be done for the XLPT, XLPT, XLHPT, and XLSCT, but I'll leave it up to the more experienced =)
Cost (before -> after):
393 -> 360 Reinforced Steam Turbine Casing
30 -> 28 Turbine Shaft
12 Rotor Assembly
and of course, the necessary controllers, hatches, etc.
Footprint (L x W x H): 7 x 7 x 9 -> 7 x 7 x 10
XLST Main/Aux Turbine Mechanic (concept)
The 4 Main turbines at the "top" of the XLST run the bulk of your Hi-pressure steam along the 4 main turbine shafts of the generator. Therefore, the greatest amount of rotational spin (and power!) come from these 4 critical turbines. At the cost of increased durability loss, these turbines generate more power more efficiently and spin up faster. Lose one though, and your power output tanks.
To squeeze out as much of the remaining exergy as possible, the 8 Auxiliary turbines handle the Lo-pressure output from the Main turbines. These produce less power than the main turbines at a slightly lower than base efficiency (thanks, Carnot) but last much longer. However, for each main turbine lost, 2 auxiliary turbines drop as well!
