Jump to content
SAU Community

Recommended Posts

makes a toolmaker / fitter and turner look like an easy job these days in comparison to the old days.

just looking at those photos makes me cringe, im glad i've never had to machine stuff like that.

makes a toolmaker / fitter and turner look like an easy job these days in comparison to the old days.

just looking at those photos makes me cringe, im glad i've never had to machine stuff like that.

Not alot better these days with some of the large transport ships

post-59638-1246918062.jpg

post-59638-1246918088.jpg

post-59638-1246918104.jpg

post-59638-1246918117.jpg

Some facts on the 14 cylinder version:

Total engine weight:

2300 tons (The crankshaft alone weighs 300 tons.)

Length:

89 feet

Height:

44 feet

Maximum power:

108,920 hp at 102 rpm

Maximum torque:

5,608,312 lb/ft at 102rpm

Not alot better these days with some of the large transport ships

post-59638-1246918062.jpg

post-59638-1246918088.jpg

post-59638-1246918104.jpg

post-59638-1246918117.jpg

Those pics are insane. I would have thought for something that big that they'd mount all the bits together inside the boat itself

-D

apparently they make enough power to power a small town or something to that effect.

there ya go

Each submarine is equipped with three Garden Island-Hedemora HV V18b/15Ub (VB210) 18-cylinder diesel engines, which are each connected to a 1,400 kW, 440-volt DC Jeumont Schneider generator.[56][121] The combined electrical generation capability of each submarine is 4.2 megawatts.[130] The Hedemora diesels were chosen because of modular construction, which made servicing easier; they could be installed three across in the available space, while other contenders required at least two banks of two; and they ran with turbochargers driven by the exhaust gas.[88] Fifteen diesel fuel tanks are located throughout the submarine: they must be used in specific sequences to preserve the submarine's trim.[131]

1.21 gigawats :down: V18 apparnetly maybe i heard wrong. No pics though, cameras not allowed here

but theres this from public collection

http://en.wikipedia.org/wiki/File:Mark_48_...edo_testing.jpg

Edited by Inline 6
apparently they make enough power to power a small town or something to that effect.

there ya go

Each submarine is equipped with three Garden Island-Hedemora HV V18b/15Ub (VB210) 18-cylinder diesel engines, which are each connected to a 1,400 kW, 440-volt DC Jeumont Schneider generator.[56][121] The combined electrical generation capability of each submarine is 4.2 megawatts.[130] The Hedemora diesels were chosen because of modular construction, which made servicing easier; they could be installed three across in the available space, while other contenders required at least two banks of two; and they ran with turbochargers driven by the exhaust gas.[88] Fifteen diesel fuel tanks are located throughout the submarine: they must be used in specific sequences to preserve the submarine's trim.[131]

1.21 gigawats :) V18 apparnetly maybe i heard wrong. No pics though, cameras not allowed here

but theres this from public collection

http://en.wikipedia.org/wiki/File:Mark_48_...edo_testing.jpg

Yeah those engines are just used to generate electricity, the final drive motor is all DC... the big ship engines have the crank directly connected to the screw, which is why they have something like a max rpm of 300 but still do 100,000 odd horsepower ;D

-D

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Bit of a pity we don't have good images of the back/front of the PCB ~ that said, I found a YT vid of a teardown to replace dicky clock switches, and got enough of a glimpse to realize this PCB is the front-end to a connected to what I'll call PCBA, and as such this is all digital on this PCB..ergo, battery voltage probably doesn't make an appearance here ; that is, I'd expect them to do something on PCBA wrt power conditioning for the adjustment/display/switch PCB.... ....given what's transpired..ie; some permutation of 12vdc on a 5vdc with or without correct polarity...would explain why the zener said "no" and exploded. The transistor Q5 (M33) is likely to be a digital switching transistor...that is, package has builtin bias resistors to ensure it saturates as soon as base threshold voltage is reached (minimal rise/fall time)....and wrt the question 'what else could've fried?' ....well, I know there's an MCU on this board (display, I/O at a guess), and you hope they isolated it from this scenario...I got my crayons out, it looks a bit like this...   ...not a lot to see, or rather, everything you'd like to see disappears down a via to the other side...base drive for the transistor comes from somewhere else, what this transistor is switching is somewhere else...but the zener circuit is exclusive to all this ~ it's providing a set voltage (current limited by the 1K3 resistor R19)...and disappears somewhere else down the via I marked V out ; if the errant voltage 'jumped' the diode in the millisecond before it exploded, whatever that V out via feeds may have seen a spike... ....I'll just imagine that Q5 was switched off at the time, thus no damage should've been done....but whatever that zener feeds has to be checked... HTH
    • I think Fitmit had some, have a look on there (theyre Australian as well)
    • Hah, fair enough! But if you learn with this one you can drive any other OEM manual. No modern luxury features like auto rev-matching or hillstart assist to give you a false sense of confidence. And a heavy car with not that much torque so it stalls easily. 
    • Actually, I'd say all three are the automatic option. Just the different trim levels. The manual would be RSFS, no? 
×
×
  • Create New...