Interesting. Like to see the turbines without the crates.
CV-18 Fujian/003 CATOBAR carrier thread
- Thread starter Jeff Head
- Start date
Interesting. Like to see the turbines without the crates.
Each propeller shaft on typical steam turbine driven ship is actually connected to a turbine set, not a single turbine. A turbine set consist of at least 2, as many as 5 turbines. The reason why there are so many turbines is it allows the same steam to optimally expand several times as it passes successively the high pressure, medium pressure and low pressure turbines. This improves turbine efficiency. Also, a steam turbine is designed to turn only one way. So an additional astern turbine designed to turn the other way is required for the ship to reverse its propeller. In addition, some ships have a separate cruising turbine designed to be most economic when boilers are at low setting so as to extend the low speed cruising range of the ship. Hence up to 5 separate turbines per turbine set, one turbine set per propeller. The output shaft of each individual turbine in a set is then meshed together in a common reduction gear box to the propeller shaft.
So in all probability Shandong and Kuznetsov will each have 4 turbine sets consisting of at least 8 separate turbines, very likely 12 including astern turbines.
However, this is too much nicety for most popular military reporting. They use the word “turbine” when they meant “turbine set”, and they probably have no idea How many actual turbines it really takes to make a functional set that would meet a real ship’s needs.
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Should be 4.
Type 051B uses two turbine engines and gets 94,000 shp propulsion power.
So 4 turbines for Liaoning & Shandong may provide about 190 shp output. If 8 turbines were mounted, the total output would be too much for the 65 kt displacement
See above. Type 051B almost certainly uses 2 turbine sets. Each turbine set consist of several individual turbines.
Also, unlike gas turbines which can be the same between bigger and smaller warships. destroyer steam turbines are often different from large warship steam turbines even of similar power, because large warship steam turbines are more heavily built, and designed for higher duty cycles.
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yes. the boilers and turbines group up and form a turbibe engine.
two or much more boilers often group with one turbine. and one engine may contains more than one turbine.
the "turbine" I mentioned in the recent post refered to "turbine set" or "turbine engine".
How about turbines for the generator sets?
Some have presented rumors that the ship uses diesel engine prime movers, instead of steam turbines for the generators. What would be the rationale for that, when steam is already available on the ship? Afaik, all US carriers use steam turbines generator sets.
If the 003 uses Integrated electric propulsion, then it definitely use turbogenerators for its integrated electrical propulsion. otherwise there is no reason fir the steam turbines to be there.
Guys, … if this ends in a long discussion on general PLAN naval propulsion then PLEASE continue here in this thread:
Chinese Marine Propulsion
This thread should be analogous to the engine thread at the Air Force section. To start off, some clarifications about gas turbines. This CJDBY thread contains most of the information we need to clear up a few designations. Gongke101 and CD-中华神盾 are the two important people there...
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