torpedo system

[toppack]

Will that give you enough poke? Most motors need 3 volts at least to produce reasonable power and torque.

I think so, these 7.mm motors I'm trying are turning a very high RPM at 1. volt with no load. If I can keep the prop-shaft-seal friction low (going to try 2 O-rings, with silicone-grease between them, first), that 1.2V battery should do the job.

[Subculture]

Will that give you enough poke? Most motors need 3 volts at least to produce reasonable power and torque.

[toppack]

I found that by removing the insulation-sleeve from AAA rechargable batteries, they fit perfectly inside a 7/16"OD brass tube, so that will be my power-source for my torpedos. :)
I'll only need 1 battery per torpedo so the sleeve removed is no problem, I can use the torpedo's tube as the negative conductor.

[deepseadiver]

Remember its not contacting the ship, the damage is done by proximity under the hull and by two forces - expanding pressure wave ahead of expanding explosive pressure bubble. This breaks the targets back by updraft initially and then as the upward forces collapses the hull is then back snapped downward.

That damage was done with a Mk48 Mod7. We are in the process of getting an upgrade now for the RAN to some version of the ADCAP.

J

Thanks John,
just explaining that to me is incredible it makes a lot of since using pressure forces. If i am correct creating like you said a huge bubble, underneath the ship, in the middle putting presure lifts the ship up plus having a bubble underneath the keel ,theres is no sapport so the weight of the ship cracks itself in two. What's amazing is taking a huge ship of war and just breaking her back like it was a pretzel, astonishing .

Jim

[Slats]

John,
That ship broke in two wow those torpedo have a serious punch that was a think ship and it split it in half like a toy :eek: how much explosives are in one . if i was on board and saw that coming at me praying won't help that's for sure im dead..

http://en.wikipedia.org/wiki/File:Ma...do_testing.jpg

Remember its not contacting the ship, the damage is done by proximity under the hull and by two forces - expanding pressure wave ahead of expanding explosive pressure bubble. This breaks the targets back by updraft initially and then as the upward forces collapses the hull is then back snapped downward.

That damage was done with a Mk48 Mod7. We are in the process of getting an upgrade now for the RAN to some version of the ADCAP.

J

[deepseadiver]

John,
That ship broke in two wow those torpedo have a serious punch that was a think ship and it split it in half like a toy :eek: how much explosives are in one . if i was on board and saw that coming at me praying won't help that's for sure im dead..

http://en.wikipedia.org/wiki/File:Mark_48_Torpedo_testing.jpg

[He Who Shall Not Be Named]

Test shot from Collins Class Farncomb of mk48...

http://en.wikipedia.org/wiki/File:Mark_48_Torpedo_testing.jpg

And the reference I made to an orange band -is for test shots (no warhead).
Apparently all mk48s that have a business end are like the one shown here are mainly green. The cap at the front gets removed before firing.
This one is being loaded into Rankin....from the defence.gov.au website



Okay David how about that long list of questions I posted- I'll shut the proverbial up if its too soon.

Best
John

The previously mentioned 'international orange' nose of that MK48 denoted it as an exercise shot. The gray nose seen in the above picture is a conformal protective 'condom' used to protect the sonar transducer window, and is removed before tube loading the weapon. The yellow band indicates that this unit is configured as a war-shot.

I want to give those carefully crafted torpedo/launcher questions (you pain in the ass, you!) proper answers; I'll address them this afternoon, John. Good stuff, deserved of consideration.

David,

[Slats]

Test shot from Collins Class Farncomb of mk48...

http://en.wikipedia.org/wiki/File:Mark_48_Torpedo_testing.jpg

And the reference I made to an orange band -is for test shots (no warhead).
Apparently all mk48s that have a business end are like the one shown here are mainly green. The cap at the front gets removed before firing.
This one is being loaded into Rankin....from the defence.gov.au website



Okay David how about that long list of questions I posted- I'll shut the proverbial up if its too soon.

Best
John

[Slats]

On the subject of colour - I plan on airbrushing the heads flourescent orange. I have seen some Mk48's on Rankin that have an orange flourescent forward bit and then a green main body. This colour will be easier to find, and an obvious point to finding them easy is to fire them towards the shoreline.

J

[deepseadiver]

Boys can you do me a favour - drop the panty talk (noise) and get back on topic (signal).

Thanks
JohnI'll drink to THAT!

Ok back to torpedo talking , with plenty of gas ill drink to that. I'll drink to THAT! Jim

[Slats]

Yes it will be and you can bet that it will be a masterpiece what David turns out.I'll drink to THAT!

The only other question I have for David and Mike relates to price and quantity of warshots - which I am sure won't be too far away. Its worth the wait guys and I hope by years end to have two new boats running this system.

In the meantime its build build build - I'd like to be a position that Rankin (my Collins is completely built (minus the SD set up) and ready for new SD and Torpedo kit.

J:)

[deepseadiver]

I think a four shot system is going to be awesome guys just awesome!!! Its going to really turn heads big time. Big seller thats for sure :D:D

[deepseadiver]

Leaving what colour the torpedo will come in to those without an airbrush…(come on guys – don’t like the colour – re-paint it!) :eek:

Here are a few questions of mine. Its not that I am inpatient, its just I tend to build relatively fast and these questions pertain to having my boats ready for the torpedo installation. In fact HMAS Rankin is progressing quickly and I intend from the get go to install the torp system in her. This means I might need to buy and build a new SD for her too.

First: the firing mechanisim.
Do we run a servo linkage out of the SD for this in addition to the electronic gizmo (sequencer)– you mentioned previous that plugs into the RX?
Is RX 5 volt power the only power required for the squencer unit?

If NO for the servo linkage, and its some sort of electrical device plugging from the mechanism back to the SD – how is the electrical wires to the SD waterproofed?



The radio:
Which is the best ctrl from the TX – switch / dial / gimbal?
It is only 1 channel required right?



The 4 shots / tubes –
Can these be configured across the bow OR 2 per side like on a Permit or later SSN?



Torpedo equalisation and ballasting
Does the weight of a fully “propel” charged torpedo roughly equal the free flooded empty tube? Moreover if the shot gets charged in tube prior to release I take it there would be a negligible change in trim (to the bow for example if bow tubes are fitted) to compensate for the liquid propel being distributed in the torpedo forward.



Interior required space in the submarine for 72nd scale system
For a bow configuration?
For two per side like a Permit?
Size (length and diameter of 1/72 scale tubes)?
Size (length and diameter of 1/96 scale tubes)?




And something for my FFG and FFH(targets)
Can these warshots fire from tubes above the surface of the water?



Range of torpedoes in 1/72 and 1/96?
I also read a couple of years back the 1/96 shots actually went further than the 1/72 – was wondering if correct what the science was behind that.


Now that is a list of pain in the back end questions.:D

[B]WOW that s some serious questions . But they are good ones indeed know im curious also
Jim .:D[/B]

[Slats]

Boys can you do me a favour - drop the panty talk (noise) and get back on topic (signal).

Thanks
JohnI'll drink to THAT!

[deepseadiver]

Mike,

It's Sunday morning ... shouldn't you be in the yard, up a tree, pulling the wings off baby birds, or something?

David,

LOL LOL LOL that was a good one . That took the cake.