Super cavitating very high speed stealth surface vessel

[Trevor HollowayParticipant @trevorholloway99134]

PTFE – the white plastic bearing material at the ends of some propshafts – very low friction. Also used in non-stick coatings on frying pans.

Very dangerous if the smoke is inhaled – old story of machinist who rolled up a ciggy when some shavings got in the baccy tin (he did not last long) !

[Paul TParticipant @pault84577]

PTFE Is most commonly seen as a joint sealing tape used by plumbers

[Bob Abell 2Participant @bobabell2]

Just as I thought!

Bob

BTW…..What size are the props?

Edited By Bob Abell on 19/01/2015 20:08:50

[Paul TParticipant @pault84577]

Hello Bob

Sorry Bob I cant tell you what size, style, pitch the propellers are as I haven't completed the design yet. The diameter could be anywhere from 30 to 45mm.

Paul

[Bob Abell 2Participant @bobabell2]

Thank you, Paul

Won`t the 50mm dia sponson tube call for at least 60 dia prop?

Just being nosey

Bob

[Paul TParticipant @pault84577]

Hi Bob

Have a look at the photo and tell me what you think

To me the props look slightly smaller than the sponsons, but they don't look like props that would be used with a cavitation system, so until I get some info back from the TQs I cant really provide a definitive answer.

Paul

[Bob Abell 2Participant @bobabell2]

OK Paul

Why is there a smaller model in the photo without props?

I think the props are small and run at very high speed, thus creating the magic cavitation?….eh?

Bob

[Paul TParticipant @pault84577]

Hi Bob

The props help push the bubbles backwards but the gas (bubbles) comes from the turbine exhaust and is forced out of the sponson at the rear of the props. I will know more about it when the answers come back.

Paul

[Paul TParticipant @pault84577]

A quick update:

The detailed design work is continuing so there is not a lot to look at, I have emailed some TQs (technical questions) to the original designers and builders relating to overall dimensions and propulsion but haven't received any answers yet.

Paul

[Bob Abell 2Participant @bobabell2]

Hi Paul

You can expect a visit from the Men in Black, any time soon?

I hope you get a reply……Did you mention this forum subject?

Bob

[Paul TParticipant @pault84577]

Hi Bob

The men in black? do you think that they will take me away for a sunshine break in Guantánamo Bay……………I'll probably end up in Rhyl.

I did mention the forum and Colin (& Paul F) so there will probably be questions in parliament as the Foreign Office try to defend Model Boat Magazines involvement in espionage.

Paul

[Bob Abell 2Participant @bobabell2]

Wouldn`t it be a surprise if they adopted your wobbly wings and Lacky band idea?

It would probabelly save £5m on the full size craft!

Bob

[Paul TParticipant @pault84577]

Do you think that we will have code names in our new roles at MI6 and get to drive DB5s, you could be 'B'

[Bob Abell 2Participant @bobabell2]

OK, P……10 – 4

10 – 10…..B

[ashley needhamParticipant @ashleyneedham69188]

"the bubbles come from the gas turbine exhaust"

I am waiting to see this…

Ashley

[Bob Abell 2Participant @bobabell2]

As in bath!

Bob

[Mark Jarvis 2Participant @markjarvis2]

Have a look on youtube the guy puts mints into a bottle of cola plenty of thrust and bubbles but no cavitation

Mark

[Paul TParticipant @pault84577]

I like Bobs 'bubbles in the bath' idea

I hadn't thought of hydrogen as a suitable gas.

Seriously I had been thinking of using soda syphon gas bulbs as the storage system with a simple gas tap arrangement linked to the speed controller.

But I don't understand the 10 10 10 4 code

Paul

[Bob Abell 2Participant @bobabell2]

10-4……. Message understood

10-10……Signing off

P I T S………Pie in the Sky

Spanner

[Paul TParticipant @pault84577]

Bob

I'm sure that somebody said PITS to Brunel (probably on more than one occasion)

Is this 10-4 gibberish something to do with CB?

Paul

[Bob Abell 2Participant @bobabell2]

Hello Paul

In the 80` and 90`s, I used to gallop up and the Mike 5, 6 and 25 regularly and the Charlie Bravo was an essential bit of kit and was great fun, just earwigging` too

I don`t know if they still do it now…….Wouldn`t think so

Bob

[Dave MilbournParticipant @davemilbourn48782]

Is this 10-4 gibberish something to do with CB?

**LINK**

Originally invented for the US Police. 10-4 (Message received) was made famous by "Highway Patrol" which was a 50's TV show about these pillars of rectitude as personified by Broderick Crawford. Codes were later nicked and 'chavved' by devotees of so-called Citizen's Band radio whose other pleasures included downing model aircraft and listening to country music……. That's a big 10-30, good buddy.

DM

Edited By Dave Milbourn on 24/01/2015 13:24:54

[Bob Abell 2Participant @bobabell2]

Dave

I once witnessed a serious car accident in those far off days and called the ambulance, sending a 10-36!

There were no mobile phones in those days

 

Don`t know what a 10-30 is though?

Spanner

Edited By Bob Abell on 24/01/2015 13:40:15

[Len Morris 2Participant @lenmorris2]

Sorry chaps, I'm loosing the plot on this lot.!

Len

[Dave MilbournParticipant @davemilbourn48782]

10-36 "Correct time" (???)

10-30 "Unauthorised use of radio"

Len
Let go your feelings and use The Force………………….or blame Doc Thomason, 'cos he started it.

[Author]

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