055 DDG Large Destroyer Thread

[taxiya]

Well, what do you expect a Taiwanese expert with any degree to influence to do? He can't exactly say 'OMG we are all doomed, there is no chance', because that would weaken the RoC military's morale and will to fight, and serves no useful purpose. If push comes to shove and the Chinese forces do invade, the best chance (it is not a very good one, but it is the only real strategy) is to hold on in hope of western intervention. If he were to come out and be absolutely defeatist, that is to shoot his own side in the foot. It's not like he was totally unbalanced either - he does say that the PLAN has come a long way.

You are mixing the role of expert and politician. Expert should say truths and only truths or keep mouth shut if the truth is inconvinient and leave the job of lie to the politicians. By lying, the person is no more expert.

 

[blindsight]

What a piece of junk!


Electric Propulsion System does NOT make the ship travel any longer than conventional ship if everything else equal. By saying otherwise, you should know what kind of "expert" and "trusted source" "Lu Li-shih" is. If you believe that DoD actually believes his rubbish, good luck with DoD.

P.S. Minnie Chen NEVER had trusted sourc

IEP with some sort of energy storage mechanism surely can boost the overall efficiency of the propulsion system, which means an extended range. However, I don't think the 055 is equipped with IEP to begin with...

 

[gelgoog]

There was talk later generations of the 055 might have IEP but the first production batch certainly does not.
The main "range advantage" with IEP is that you can throttle down the engines and run on battery mode when you are just moving slowly or staying in the same place. Turbines typically have an optimum operating speed and anything below that means the engine runs suboptimally. That is why for example the 052D destroyers have auxiliary diesel engines. Even the 055 can run with just a couple of turbines to reduce consumption but IEP with batteries would further improve that albeit at much higher construction cost.

 

[antiterror13]

There was talk later generations of the 055 might have IEP but the first production batch certainly does not.
The main "range advantage" with IEP is that you can throttle down the engines and run on battery mode when you are just moving slowly or staying in the same place. Turbines typically have an optimum operating speed and anything below that means the engine runs suboptimally. That is why for example the 052D destroyers have auxiliary diesel engines. Even the 055 can run with just a couple of turbines to reduce consumption but IEP with batteries would further improve that albeit at much higher construction cost.

true, but battery is getting cheaper and cheaper every month

 

[blindsight]

true, but battery is getting cheaper and cheaper every month

You guys are talking about batteries, but some papers show PLAN's future IEP may use other types of energy storage mechanism, such as a flywheel-based system.

 

[Hub]

There was talk later generations of the 055 might have IEP but the first production batch certainly does not.
The main "range advantage" with IEP is that you can throttle down the engines and run on battery mode when you are just moving slowly or staying in the same place. Turbines typically have an optimum operating speed and anything below that means the engine runs suboptimally. That is why for example the 052D destroyers have auxiliary diesel engines. Even the 055 can run with just a couple of turbines to reduce consumption but IEP with batteries would further improve that albeit at much higher construction cost.

For IEP , battery for energy storage is nice to have, NOT must to have

 

[asif iqbal]

I would like to start see of Type 055B with railgun by 2022

 

[Yodello]

I would like to start see of Type 055B with railgun by 2022

Would definitely like to see that come to fruition. It will depend a lot on the Power source of the Ship.

 

[Michaelsinodef]

I would like to start see of Type 055B with railgun by 2022

Is it that far along now?

Aren't there still some problems (fire rate, the 'bullets' etc.).

 

[taxiya]

IEP with some sort of energy storage mechanism surely can boost the overall efficiency of the propulsion system, which means an extended range. However, I don't think the 055 is equipped with IEP to begin with...

engergy storage mechanism is to smooth out the power demand spike as the ship's working condition is very dynamic. It is no where large engough to make a difference in range. It is like a UPS saving a patient on an operation table when there is a power outage but won't keep the hospital running longer than an hour.

The reason of using IEP to improve fuel efficiency is to keep one of the many gas turbines to run in full power to drive the ship in cruising speed instead of having many to run at lower than half power which is very inefficient like Arleigh Burke's COGAG.

An equaivlant solution other than IEP in this regards is CODAG where disel engine (high efficient in crusing) is used instead of GT.

IEP's advantage is obvious when taking into consideration of all other electricity demands such as radars, catapult and electrified weapons. But purely from the crusing/fuel effieciency perspective, IEP is not much better (if at all) than CODAG.