Does anyone know what model this is?

[collins class]

I have come across this pic a number of times and interested in finding out what model it is on and whether there are more pics available.



Vectored thrust on a pump jet is an interesting idea, particularly at this apparent scale...

Thanks

Byron

[boss subfixer]

Byron,
I've seen something simular to

Byron,
I've seen something simular to this a couple of months back at a hobby shop local to me. It was more of a concept sub, builder unknown and it was for sale. It was at least to me a little bit Nemos Nautilus, The Bat boat from batman and a little of the sub from the gerry anderson series that I can't remember the name of at the moment. But it also had a steerable pump jet. All in all it was pretty cool looking.

[collins class]

Thanks Don. Any chance it

Thanks Don. Any chance it still resides in the hobby shop?

Byron

[collins class]

After a little research I

After a little research I believe this is a model of the French Le Triomphant class which has a pump jet propulsion system. The pic was from a European sub regatta but I have been unable to find any of the full submarine.

Byron

[boss subfixer]

Byron,
First chance I get I'll

Byron,
First chance I get I'll check, and try to get more info on it. I'm on long hours for a while so please be patient. Yesterday was a 15 hour day, lucky me.

[collins class]

Thanks Don. No problem. Appreciate

Thanks Don. No problem. Appreciate the effort and know what the long hours are like. Don't burn out though mate... too many targets out there....

[collins class]

Just thought I would share

Just thought I would share a pic of the stern of the real Le Triomphant. Don't know if the real one has a vectored pump jet, though it is a cool idea...



Byron

[anonymous]

Vectoring would make perfect sense.

Vectoring would make perfect sense. I have been curious about this since the first time I saw an image of the Le Triomphant PJ. The large fixed vertical stabilizers (likely passive flank arrays) on the horizontal tips and the relatively small conventional rudders I have seen on Le Triomphant class images (when shown) by themselves could never turn this submarine alone. Simply looking, the 'fixed' tail surface areas far exceeds the 'moving' (rudders) surface areas by a wide margin.

But if the shroud could vector, this would change everything! An articulated or flexible shaft would be needed. The real sub would also have to use large hydraulic systems to turn this large surface. The models we build, and their turning performance (or lack of) make good intelligence test analogs of the real vessels. You may have revealed unwittingly a french secret and a modeling solution to an issue that has plagued PJ subs kits....turning performance. The real vessels never seem to have such turning issues, only our models. In fact PJ subs have been touted as being even more highly maneuverable. This may be the reason why. Now we have a line of questioning to pursue to see if this model mimics the real sub, or a local modeler's wrinkle.

Steve Reichmuth





Edited By Dolphin on 1126376854

[collins class]

Just thought I would share

Just thought I would share a pic of the stern of the real Le Triomphant. Don't know if the real one has a vectored pump jet, though it is a cool idea...



Byron

Interesting thing I just noticed, no visible rudders or on the bottom of the hull a rudder connection point to the pressure hull....

[collins class]

There is no top or

There is no top or bottom rudder present at all in these.




There is in these photos however]http://www.netmarine.net/bat/smarins/triompha/photo03.jpg[/img]


Interesting don't you think.....

[tmsmalley]

Vectored thrust on a sub,

Vectored thrust on a sub, now there's a new concept
Here's a patent from Lodner Phillips in 1852...



Phillips was granted an 1852 patent for a "Steering Submarine Propeller." The innovation]The more things change, the more they stay the same."[/i]

[collins class]

Thats a surprisingly modern propeller

Thats a surprisingly modern propeller design as well.....