Azipod

JHOLLAND1 · Aug 7, 2017

Azipod---both a trademark and invention of ABB

Azipod--- ( azimuthing electric podded drive)

video of assembly and dyno run of 20 MW azipod

ABB Azipod(R) propulsion unit assembly Timelapse - YouTube

bryan_machine · Aug 8, 2017

See alos the various versions of the Voith Schneider Cyclidal Drive - seems to me (from what I read only) - it ends up tugs and the like - where more open speed vessels use the Azipod or something similar.

Voith Schneider Propeller - YouTube

Wonder about the engineering required for the hull in either case...

Monarchist · Aug 9, 2017

JHOLLAND1 said:
Azipod---both a trademark and invention of ABB

Azipod--- ( azimuthing electric podded drive)

video of assembly and dyno run of 20 MW azipod

Big one. For big hulls. Docking/undocking perhaps?

C&W Marine's underseas cable maintenance ships of years gone by had MUCH smaller equivalents to hold position way out in deep, deep, blue water. Cable could be fragile when it had to be hauled 12 thousand feet or so to the surface for splicing.

Power was all-electric on many. Redundant Diesels driving a dual-ring-main bus, positioning controlled by reading off satellites - even before GPS.

Maintenance fleet largely gone now.

Undersea Fibre cables got good enough long ago to no longer need repeaters in them, nor power to operate those. Then they went smaller, lighter, faster to emplace, durable and cheap enough it paid to just lay a new one - usually higher capacity as well - and just abandon one that had failed.

MattiJ · Aug 9, 2017

Ha!
Have passed that "forum marinum" where that picture is taken but never bothered to visit.

Now who will recognize this? Monarchist?

gwilson · Aug 9, 2017

Is that the original observation vessel that was suspended beneath the "Bathyscape" back in the 50's ?

MattiJ · Aug 9, 2017

gwilson said:
Is that the original observation vessel that was suspended beneath the "Bathyscape" back in the 50's ?

Nope, but it has something to do with CIA and cold war.

DDoug · Aug 9, 2017

Whatever it is, there's a large black creepy crawly going up the right hand side.....

Monarchist · Aug 9, 2017

MattiJ said:
Ha!
Have passed that "forum marinum" where that picture is taken but never bothered to visit.

Now who will recognize this? Monarchist?

Resembles my MEMORY of Piccard's bathyscape, "Trieste". But that was wot? 1950's.. lessee:

Bathyscaphe Trieste - Wikipedia

Ah.. 1960'ish.

Seems different in detail, so must be some other one?

CIA and cold war?. Well... Glomar Explorer was not the only thing we had gotten up to w/r Sov subs.

And things "of similar persuasion", as Jack Elam put it about proctology....

MattiJ · Aug 9, 2017

digger doug said:
Whatever it is, there's a large black creepy crawly going up the right hand side.....

If there is no finger in front of the lens on my photographs there has to be shadow.

The balloon in question is a cast steel (Maraging alloy) sphere rated for 6000m /600bar /8700PSI depths. Finland sold 2 of those to Russia(then USSR) in 80's

CIA wasn't too happy that Russians would be able to screw around on deep sea but CIA/US thought that only viable option was to weld the thing out of titanium and we didn't have expertise to weld titanium so CIA really didn't care at first.
Well they made the parts by casting 200 mm thick and milling it to only 40mm to get rid of the porous surface layers and managed to get required strenght/weight ratio. You can see that the viewport is pretty thick and tapered...

Later on CIA managed to pressurize(pun intented) the manufacturer (Rauma-Repola, todays Metso) to give up on submarine business and they concentrated their efforts to paper mills (Metso corporation of today)

Monarchist · Aug 9, 2017

MattiJ said:
so CIA really didn't care at first.

They may have only pretended to care, even later-on.

"As has come to pass..." pretty well-known by this late date that the CIA was still OSS around the time the USA started valuing anything that sucked scarce resources out of the USSR's ability to invest in their own future.

Works well. Lasts a long time.

John Garner · Aug 9, 2017

ABB? Was the Azipod designed for the Swiss Navy?

Monarchist · Aug 9, 2017

John Garner said:
ABB? Was the Azipod designed for the Swiss Navy?

Swiss Merchant Marine had regular size ships. Damned few able to dock at Swiss ports, is all. Hitler thing. "Innovate or starve-ate" issue, WWII.

Their Diesels powered OTHER nations' blue-water shipping for around a hundred years.

Pull up a map of the Rhine river. Check the Southernmost end. Think barges.
"Landlocked" politically, CH is. Not so much transport-wise. Catbird seat for a couple of thousand years, actually. Check road, rail and mountain passes on a topo map or satellite view.

Their "navy" was but some rather OCD weirdly over-engineered gunboats for lake patrol. One of those with partial cutaway is in a Museum. Zuerich? Zug?

Worth the visit, if only for the "WTF?" view of a Hispano-Suiza motor hiding amongst a gadzillion oiled linen gasketed and nylocked stainless alloy bolts and lightmetal extrusions. Others would have used ignorant wood with copper clench-nails.

The bigger surprise is the damned thing doesn't tell time and display phases of the moon. Had to bring third-party Swiss wristwatches aboard for that part.

Did have right 'bitchin effective automatic cannon, though, so Third-Reich Kriegsmarine generally elected to water-ski elsewhere.

Edgar10937 · Aug 9, 2017

Monarchist said:
Big one. For big hulls. Docking/undocking perhaps?

C&W Marine's underseas cable maintenance ships of years gone by had MUCH smaller equivalents to hold position way out in deep, deep, blue water. Cable could be fragile when it had to be hauled 12 thousand feet or so to the surface for splicing.

Power was all-electric on many. Redundant Diesels driving a dual-ring-main bus, positioning controlled by reading off satellites - even before GPS.

Maintenance fleet largely gone now.

Undersea Fibre cables got good enough long ago to no longer need repeaters in them, nor power to operate those. Then they went smaller, lighter, faster to emplace, durable and cheap enough it paid to just lay a new one - usually higher capacity as well - and just abandon one that had failed.

Rode an oil drilling ship that used them from Kenya to Singapore a couple of years ago, used for propulsion and dynamic positioning over the hole several miles down, heard some of the newer cruise ships were using them.
Edgar

Sent from my SM-G935V using Tapatalk

Monarchist · Aug 9, 2017

Edgar10937 said:
Rode an oil drilling ship that used them from Kenya to Singapore a couple of years ago, used for propulsion and dynamic positioning over the hole several miles down, heard some of the newer cruise ships were using them.
Edgar

Aye, deepwater drilling makes submarine cables look dead-easy. Funny story for y'all.

PTAT-1, Cable & Wireless. Repeatered, still-yet, so had a copper core carrying serious power. Or it was when it set out on its journey, anyway.

Fibre-optics, then Poly-wotever over, with a stainless foil in the jacket. Then a tad more Poly.

AT&T's Guru's scoffed at that. The poly needed no help from that silly thin foil, and laid their cables without it.

Wasn't long before they started having outages whilst we had not.

Shark bites.

130 years with submarine cables? C&W KNEW what ampullae of Lorenzini DID for a shark!

AT&T - growing up on dry-land as they had done - had to learn the value of shielding the expensive way.

Chalk another one up for the Brits!

MattiJ · Aug 9, 2017

Not Swiss navy, not cable ships and neither oil drilling rigs are the main uses. Think of ice breakers and cruise ships.
Azipod - Wikipedia

AFAIK developement started with Strömberg that later merged with Asea and later with Brown boweri (ABB, asea brown boweri)
Variable frequency drives were kind of related and developed also in here around same era.

Monarchist · Aug 9, 2017

MattiJ said:
Not Swiss navy, not cable ships and neither oil drilling rigs are the main uses. Think of ice breakers and cruise ships.
Azipod - Wikipedia

AFAIK developement started with Strömberg that later merged with Asea and later with Brown boweri (ABB, asea brown boweri)
Variable frequency drives were kind of related and developed also in here around same era.

Prestigeous engineering history. Beloved enough of bansksters to have been able to buy whatever they needed to fill-out an empire. Rockwell Automation / Baldor / Reliance / Dodge & Master Gear among many.

C_Stebbins · Aug 11, 2017

At first I thought this was another z-drive. I'm currently the lead structural QA on a large steel retrofit of a 275' vessel which has two azimuth drives and a bow thruster..

From wikipedia:

In the traditional azimuth thrusters such as Z-drive and L-drive thrusters, the propeller is driven by an electric motor or a diesel engine inside the ship's hull. The propeller is coupled to the prime mover with shafts and bevel gears that allow rotating the propeller about a vertical axis. This type of propulsion system has a long tradition throughout the 1990s and today such propulsion units are produced by a number of companies around the world.[4]

In the Azipod unit, the electric motor is mounted inside the propulsion unit and the propeller is connected directly to the motor shaft.[5] Electric power for the propulsion motor is conducted through slip rings that let the Azipod unit rotate 360 degrees about the vertical axis.[6] Because Azipod units utilize fixed-pitch propellers,[7] power is always fed through a variable-frequency drive or cycloconverter that allows speed and direction control of the propulsion motors.[8]

DDoug · Aug 11, 2017

Why am I thinking the first units were made by "Minn Kota".....

DDoug · Aug 11, 2017

C_Stebbins said:
Because Azipod units utilize fixed-pitch propellers,[7] power is always fed through a variable-frequency drive or cycloconverter that allows speed and direction control of the propulsion motors.[8]

Odd that they didn't have D.C. drives at first, before
VFD's were so common.

I know the "bow thrusters" while not swiveling, were D.C.

MattiJ · Aug 15, 2017

digger doug said:
Odd that they didn't have D.C. drives at first, before
VFD's were so common.

I know the "bow thrusters" while not swiveling, were D.C.

Bow thrusters operate only on short perioids so wear on them is probably not so significant?
I don't want to be the guy who has to dive to DC azipod to inspect brushes

Azipod

Titanium

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