Why aren't offshore tunnel hulls using forward wings to control bow lift?

What do I know? Except that Jim has won several national championships with his hydroplanes and controls his trim wing with a collective in his steering yoke, not a foot pedal...and me?..I 'dabble' in high-performance vessel dynamic stabilization systems. Planing monohulls and catamarans...the odd hydrofoil craft here and there.

Carry on.

 

So? The first thing I said in this thread was UNLIMITED hydroplane, not boats that run SLOWER than offshore big tunnel hulls.

 

You seem given to making assumptions. The hydros my friend races certainly run at speeds similar to those an offshore boat runs; faster if you factor in some weather and waves that the hydros don't have to contend with.

If a forward airfoil was going to offer real benefits, I would assume that the teams with unlimited financial and technical resources like GEICO would have had them long ago....unless excluded by a class rule?

I'm sure you've answered your question by now, though.

 

I haven't assumed jacksquat.

I didn't say any offshore boat. I said big tunnel hull.

Unlimited hydroplanes run over 200 mph. At least in flat water conditions, the offshore big tunnel hulls have also run over 200 mph.

 

Hopefully someone will jump right in here and answer your question then.

 

"If it was a good idea someone would've already tried it" is the last refuge of the intellectually bankrupt.

Get back to me when you have something to contribute besides empty smugness.

 

I will thanks. Speaking of intellectually bankrupt, got to get back to work on a challenging trim and roll stabilization project for a 60' craft that is supposed to achieve 80 knots ....before I end up financially bankrupt.

toodles.

 

Clever. A PowerPoint would perhaps have been more effective though. Just sayin'.. How many boats did you say you've added aero- or hydro-dymamic control surfaces too, again? I missed that bit apprently.

 

Classic ad hominem response.

Not falling for it,

<insults directed towards other forum members deleted>

By the way, Unlimited hydroplanes were running 200 mph fifty years ago but the era in which they ran without front wings is a lot longer than the one in which they've been running with them.

Thirty years ago you would've been just another of the hydebound traditionalists arguing against wings.

 

Actually..for the record..thirty years ago, I and another far-more-well-known-than-I aerospace controls guru were contemplating (under contract contemplating) the nuances of what it would take to apply advanced countour-hugging and missile guidance control algorithms and related hardware to advanced marine vehicles. The rest..as some might say..is just history. Ride control systems were invented and off we went. 200+ vessels and 30 years later...I still find it quite challenging. But that's probably in no small part attributable to my 'hidebound' side...ya think?

But you do not know me..or I you. So we can leave it at that. Or at least I can.

 

Arrogant Braggarts

I am not impressed. Let me know if there is anything about "I couldn`t care less about arrogant braggarts" you don`t understand. Get back to me when you can propose a practical solution to the problem of 200 mph tunnel hull boats blowing over and killing their crews.

 

I got all that. You are suitably 'pegged'. What threw me off at first was this..what appeared to be a reasonably and fairly benign question:

I won't get fooled again. Wait..somebody else already used that, didn't they?

 

The "problem" of 200mph "offshore" ( this is stipulated in the thread title) tunnels boats killing their crews in blow-overs is more psychiatric-related than technical, IMO.

 

Let's please try and keep the forum polite to all other members please. Some posts containing insults directed towards other members have been removed. This could be an interesting topic, but let's please stay away from the insults. Thank you.

 

I think at first you are going to have to define what YOU call a tunnel hull. A few examples would be nice, since there are so many variants about called "tunnel Hull".

Then there is a basis for comparison and discussion.