Calling all Russian submarine fans

[Vepr157]

Looking to scratch one of my Alanger DELTAs into DELTA STRETCH I. I have pictures, drawings, etc for everything I need to attack except for references that give me a clear understanding of the profile and shape of the bow. Anyone have something that can help (Polar Bear kit or OKB Grigorov D3 kit for pictures maybe)?

Thanks,

Dave

I found this body plan for one of the Project 667 submarines, probably a Yankee, a while back on some Russian forums. Since all the Yankees and Deltas (except for the Delta IV) have nearly identical hull forms, this should work for the Delta III/Delta Stretch.

https://i.imgur.com/hKPhQjz.jpg

The drawing shows the lines at several stations along the hull that are (probably) equally-spaced. The right half of the drawing shows the forward part of the hull, and the left half shows the aft part of the hull. The forwardmost line is at station 2? (the ? standing for ???, Bow) and then moving aft are stations 1? and 0. Presumably 2? is one station spacing aft of the extreme bow. The hull widens until station 5, which is the start of the parallel midbody. The parallel midbody continues until station 13, and the hull narrows until station 20. Like the bow, there are some stern stations, 1? through 4? (the ? standing for ????????, Stern). The extreme stern in this drawing is likely the end of the hull and not the stern tubes or propeller bosses. On other drawings, I measure this as being 126.18 meters from the bow. So if we assume that there are 28 stations equally-spaced stations along that length, that equates to 4.506 meters per station. It's only 6 mm from being exactly 4.50 meters, so I'd bet that's the spacing that was used.

So in summary the stations (from stem to stern) are:

(extreme bow) 2? 1? 0-5 10-13 14-20 1? 2? 3? 4? (extreme stern)

Another thing to note: the pressure hull is also depicted as thicker lines often with the suffix ?? for (??????? ??????, Pressure Hull). So just make sure you're using the lighter outer hull lines.

Jacob

[Guest]

That is awesome. Thanks for posting.

[ssn705]

That's perfect for what I want to do. Time to start messing with it.

Thanks,

Dave

[Woodstock74]

Do we know if there are any pre-stators on the Typhoon's pumpjet? It appears to be a fairly conventional, though scimitar-like screw in a shroud, with the shroud mounting to existing structure to either side of it (vs stators being stators and the mounting method for the shroud). Kicking around looking at this next, or down the line, though don't have any of the kits on hand (HB and Mikro-Mir, over looking the Dragon kit). The HB kit integrates the shroud into the upper and lower hull halves, on the MM kit they are separate. Point being, if there was some inherent inaccuracy regarding stators, to correct with the HB kit in mind would be more difficult. Much more straight forward if a simple screw correction as it's then possibly relevant to both kits.

Part the issue is I'm stuck at work and all my research images, enough to probably answer my own question, are at home, lol.

[Vepr157]

The Typhoon just had standard propellers inside an accelerating duct (i.e., a Kort Nozzle). There weren't any stators and even the propellers look very conventional; they have a smaller chord toward the tip like a normal open propeller.

Jacob

[Woodstock74]

The Typhoon just had standard propellers inside an accelerating duct (i.e., a Kort Nozzle). There weren't any stators and even the propellers look very conventional; they have a smaller chord toward the tip like a normal open propeller.

Jacob

I note at least two variants, these, which look very much like very, very conventional submarine props circa 1955:

https://qph.cf2.quoracdn.net/main-qimg- ... 009a367367

And this, which looks like a really broad-blade scimitar prop:



While we're at it, is this the backside of the Typhoon's 7-blade prop?

https://drikus.club/uploads/posts/2021- ... nik-10.jpg

https://hdpic.club/uploads/posts/2021-1 ... lya-94.jpg

[Vepr157]

Ha, I remember drawing that frowny face on that photo for something I posted on reddit years and years ago (I have no memory of why I drew said frowny face). Very amusing that that is the version of the pic still circulating haha. Here's the original:

https://i.imgur.com/OnJJUuG.jpg

Yes, they are Typhoon propellers. I had no idea until yesterday, when I was browsing through this recent modeling thread on the Typhoon:

http://forums.airbase.ru/2016/12/t94598 ... akula.html

The unskewed five-bladed propellers were probably only on TK-208, and only for a short time.

Jacob

[ssn705]

Likely minimal advantage to the nozzles. Primarily for protection in the arctic since the the screw is conventional and doesn't look "fitted" to the nozzle in most pictures I have seen.

Dave

[chuck]

Yes, it is probably mostly for protection against ice in the Arctic SSBN bastion when the submarine breaks through the ice pack to fire her missile

[Tom Dougherty]

Moving the K-3 Leninsky Komsomol (NATO November Class)through the streets of St. Petersburg to its final destination as a museum. Launched in 1957 and retired in 1988, the restoration took years to remove the reactor and address corrosion and deterioration after almost 30 years in "storage". The submarine was divided into two sections and barged to Kronstadt port. The trip through the city was 4.5 kilometers, done in a single night.

Here's the press information:
The restoration of the first Soviet nuclear submarine K-3 "Leninsky Komsomol" has been completed, preparations have begun for an engineering operation to deliver the submarine to the place of eternal parking in the Museum of Naval Glory of the Island of Forts tourist cluster in Kronstadt.

Restoring the appearance of the "Lenin Komsomol" took longer than planned, it was previously reported that the submarine would be delivered to Kronstadt at the end of spring this year. At the moment, apart from the timing, nothing has changed. As reported, on August 27, 2022, the first part of the engineering operation will begin, as part of which the submarine will be withdrawn from the territory of the Kronstadt Marine Plant and towed to the Vyborg shipbuilding plant, where it will be installed on the Atlant submersible barge.

Next, the barge will deliver the submarine to the port of Kronstadt and raise it to its level. On this, the first part, called the sea, will end and the second, land, will begin. As previously reported, the submarine will be divided into two parts according to the donor compartment, which replaced the reactor compartment, and will be loaded onto special self-propelled axles capable of moving along city streets. Only one night is allotted to overcome the distance of 4.5 km from the port to the museum. After delivery, the submarine will be reconnected and installed in the place allotted for it. After the opening of the museum, visitors will be able not only to see the submarine from the outside, but also to visit inside.

K-3 "Leninsky Komsomol" - the first Soviet and the third nuclear submarine in the world, the lead ship of Project 627 "Kit". Launched on August 9, 1957. She entered service on July 1, 1958, on March 12, 1959, she became part of the 206th separate submarine brigade based at Severodvinsk.

Thought question: In picture 3 & 4 the submarine is turning. So is that technically a right turn or a turn to starboard? Discuss among yourselves...

[ssn705]

Anyone happen to know the purpose of the vents on the upper sides of Russian subs. They're almost always open on the surface in port or near port. When underway heading out to sea they are shut (for streamlining) and presumably the same for submerged ops. Best guess is just to allow drainage of the void space between hulls above the waterline for surface stability concerns, but anyone happen to know if there is a particular reason and routine? Any reason for them to be open when submerged?

Dave

[Vepr157]

Anyone happen to know the purpose of the vents on the upper sides of Russian subs. They're almost always open on the surface in port or near port. When underway heading out to sea they are shut (for streamlining) and presumably the same for submerged ops. Best guess is just to allow drainage of the void space between hulls above the waterline for surface stability concerns, but anyone happen to know if there is a particular reason and routine? Any reason for them to be open when submerged?

Dave

They're supposed to automatically close at a certain depth to fair the hull. They might be similar to the MBT flood hole covers on U.S. nuclear submarines that were used briefly around 1960. Those covers had an air cylinder and counterweight that was balanced to shut the flood holes below periscope depth. When blowing the MBTs, 400# air was blown into the cylinders, opening the covers. The Navy quickly decided that system was more trouble than it was worth and returned to putting anti-vortex louvers on the flood holes. I wouldn't be surprised if on some Russian submarines the closures for those holes have been removed entirely.

Jacob

[ssn705]

Could be. It is just interesting that they are high on the outer hull. I'm doing an OSCAR II with one side of the missile hatches open (so I'll be scratching some internals), so I'm just trying to decide which way to position the small doors on the side...seems like shut is the way to go.

Dave

[Vepr157]

Could be. It is just interesting that they are high on the outer hull. I'm doing an OSCAR II with one side of the missile hatches open (so I'll be scratching some internals), so I'm just trying to decide which way to position the small doors on the side...seems like shut is the way to go.

Dave

Yeah, I think closed is fine. It appears that only the limber holes next to the missiles have covers; all the others are open with gratings. You can see some of them open and some closed in this photo of the Orel:

https://i.imgur.com/7olm3hA.jpg

The limber holes next to the missile tubes are probably to flood and drain the "bathtub," analogous to the VLS bathtub flood holes on U.S. SSNs. These cross-sectional views show the missile bathtub areas (MBTs shown in dark shades):

https://i.imgur.com/Ucd1CV4.png

These sectional views are pretty illuminating because they show where the flood holes must be. At the keel there is some sort of variable ballast tank (safety, negative, or auxiliary tank?), so the MBT flood holes are not right at the keel. The tops of the MBTs are often within the superstructure (like old U.S. double-hull submarines) and that superstructure needs to flood and drain somehow.

Jacob

[ssn705]

Jacob,
Great reference. Thanks for posting. The large tank under the pressure hull is certainly interesting.

Dave

[ssn705]

Anyone happen to have a picture of OSCAR I with the early tandem screws.

Dave

[Vepr157]

Anyone happen to have a picture of OSCAR I with the early tandem screws.

Dave

Dave,

See this 1983 Soviet film about Project 949:

https://www.youtube.com/watch?v=Fk29x3u928o

The propellers are at 5:10.

Jacob

[ssn705]

Nice. Thanks Jacob. I love these old movies.

Dave

[ssn705]

Another screenshot...

[Woodstock74]

Mikro-Mir doing a Yankee class:

https://www.facebook.com/mikro.mir.dnep ... SFw9mBpjsl