055 DDG Large Destroyer Thread

[latenlazy]

When I refer to venting here I mean specifically the air that the GT uses to compress and burn with fuel resulting in output power, exhaust, and waste heat. But in actuality the same air intake that is used to power the GT would also be the same air intake that is used to cool the GT. If you're referring to exhaust cooling, that happens with a combined-cycle GT for the purpose of additional electricity generation, or possible on warships for the purpose of reducing IR signature (or maybe both).

Okay, but why should we expect 6 more vents for the generators in addition to the 4 for the turbines? As I understand it the intake and exhaust of air all happens with the turbines. The generators themselves don't have anything to do with either the intake, compression, or emission of gas. They generate their electricity through the mechanical energy generated from the turbines rotating. None of that function involves gas dynamics.

 

[Tyloe]

No, there are 4 GTs used as engines powering 2 gearboxes turning 2 shafts. There are also 6 GTs used as generators powering 6 alternators generating electricity. The 4 GTs used as engines are much larger and already have (mostly) identifiable intakes (downtakes) and exhausts (uptakes). The 6 smaller GTs used as generators will also require similar but smaller venting, and we will be seeing evidence of this on the 055 at some point.

So your "6 GT generator theory" is just 6 half generators, and half GTs. Thanks for the ride.

 

[Iron Man]

So your "6 GT generator theory" is just 6 half generators, and half GTs. Thanks for the ride.

What are you even talking about at this point with your "half" generator nonsense? You clearly have no understanding of even the basic points and the basic vocabulary of GTs and what they do.

 

[Iron Man]

Look, this isn't rocket science.

This is as simple a graphic as I can make. The top structure is a GT engine. The bottom structure is a GT generator. Notice they are EXACTLY the same things except for size and what they are attached to. They both require fresh air (blue arrows) and fuel (red arrows), and they both output exhaust (brown arrows), waste heat (orange arrows), and power (green arrows). In the case of the GT engine the power output is coupled to a transmission (gearbox). In the case of the GT generator the power output is coupled to a generator (alternator). This is as simple as it gets. Incidentally the output shaft can either come out the front or the back end of the GT.

 

[Iron Man]

In case anyone is still unclear, there are 4 of the large things and 6 of the small things pictured above, installed in the 055.

 

[Tyloe]

What are you even talking about at this point with your "half" generator nonsense? You clearly have no understanding of even the basic points and the basic vocabulary of GTs and what they do.

Oh, I'm just fed up from being dragged in circles. Since someone couldn't clarify his term use of 'GT generator' meant a small GT and a generator. But I guess that's forum miscommunication.

 

[Iron Man]

In case anyone is STILL unclear, this is what I'm talking about (note that things are not to scale):

Oh, I'm just fed up from being dragged in circles. Since someone couldn't clarify his term use of 'GT generator' meant a small GT and a generator. But I guess that's forum miscommunication.

Oh, THAT was your hangup? Like you've never heard of a part used to refer to a whole? Incidentally I did clearly mention that a GT attached to an "alternator" (which I also stated was synonymous with a "generator") was a "GT generator", but I guess you missed that part. Or don't understand what an alternator is.

 

[Tyloe]

Oh, THAT was your hangup? Like you've never heard of a part used to refer to a whole? Incidentally I did clearly mention that a GT attached to an "alternator" (which I also stated was synonymous with a "generator") was a "GT generator", but I guess you missed that part. Or don't understand what an alternator is.

My initial thought was that you were referring to the main 4 GTs driving the two propeller shafts while also driving the generators. Your original post I replied to was unclear, and your posts didn't explain the alternators paired with their own seperate GTs before the previous page. This was simply a miscommunication which lead to my misunderstanding about GT generators. Now it's all clear.

(The original post which i was referring to)

Also, if the 6x GT generator theory is correct, we will need to be able to see some kind of venting system for the aft generators' uptakes and downtakes in the area of the helicopter deckhouse. They would necessarily have to be aft of the aft VLS section. Perhaps that alleged giant microwave emitter panel is actually serving a far more mundane purpose....

 

[latenlazy]

Wait. Are we sure the 6 generators have their own turbines, and aren't being driven by the 4 main turbines?

 

[Richard Santos]

Who said the type 055 had separate GT driven generators?

Typically even gas turbine powered warships uses diesel generators rather than separate gas turbines for powering generators.