Getting there like twin 150's on 20 ft. Bass boat w/o the fanfare.

Another gauge of performance is price point... 2019 20' Nitro san engines is $27,000 +/- retail military grade 150 hp are $25k apiece which makes the retail price somewhere $80 to $85k. We can achieve that with some non-critical compromises within 6% without breaking a sweat. Now I didn't say I was happy with some of the compromises, but they in no way compromise any of our performance goals.

 

haha....I cannot disagree. This is Walter Mitty stuff, I actually see no questions asked by him or answered. And this has the alarm bells ringing...…"We considering adding aux generator(s) to pumps to greatly increase that duration.... after all it's energy that's already been paid for. "
This reminds me of a character who had the idea of dragging some kind of turbine generator behind his boat, to generate electricity to power his boat. Ahem ! As for 13 hours of running (on plane, presumably) without recharge, that is clearly ridiculous.

 

Power density of gasoline is 40 times higher than the best batteries there are. So to equal the speed and range of, say 300 litres of gasoline, add 12000 litre mass and volume of batteries.

 

Software is not going to couple a motor to a jet pump. You need a shaft. Designing a shaft is something simple. Seems like you are posting self aggrandizing claims of a military career instead of details that make any sense about a propulsion system. Saying that it is superior is nonsense unless you define superiority. Your claim that you have batteries that store almost 3 gigawatts and fit into a bass boat are a fantasy. Do the math 300 HP = 224kW multiply by 13 hours and that is 2.9 gigawatts/hr; not realistic.

 

Gentlemen,
I joined this site and selected this forum hoping to find inspiration from a young MIT phenom who's chosen to do graduate work on jet pumps. In some ways this exchange has been rewarding as it's given me some ideas. If what I'm going to try works, I've no idea how to make the process into reasonable and profitable manufacturing operation. Along those lines, sometimes it's clarifying to be offered challenges to see how far in this project I have come and achieved.

 

Absolutely correct, shaft design within it's self, even if it's titanium allow, obvious weak link begin the coupling joint... can't tell you how many I have shrapnel led. As for the battery storage capacity then I don't know what to tell you... except Tesla's reputation and their design certification, coupled with the fact that I'm sitting here looking at them in a our prototype hull which are exactly those of a Nitro.

 

So what are you waiting for?

It sounds like you've got it all worked out.

Post some pictures of what you're doing?

 

That is more evasion. A shaft to handle 300HP and maybe 400 ft. lb. is an item that can be bought off the shelf. The difference between steel and some exotic material can't be more than 20 lbs. This is another tall tale.

 

The thread is a wind-up, simple as that.

 

Ed, this is not a hostile site, but every guy here (gals are guys) loves boats. Lays awake at night thinking about boats. Pours their money and their time and sometimes their blood into boats. If they say something can be done, then it sure as hell can be. If they say it can’t... maybe they are wrong. Maybe. But you better have some solid math, and lots of concrete examples to back your talk. Because there’s folk on here with scarred hands, grease under their fingernails, and engineering degrees, or naval architecture degrees. But if you want to work. Seriously work, and learn, some of those guys will give you thousands of dollars worth of intelligent, accurate advice. Because they love boats.

And if you do the work, and prove your point, you’ll find a bunch of seriously interested allies. There’s nothing better than something new. A new way to do something. A better approach. A better technique.

John

 

Armoured planing boats would be a novelty.

 

Guess you speed read, must have the part about work on RIBs, huh.

 

Yeah I wish it were that simple. The 800 lb elephant in the room is the jet pumps on two separate projects that are currently in development. Grossly inefficient with lousy acoustic signatures.

 

However, after your claim of 12% performance increase, you claim that commercially available jet pumps are "grossly inefficient". The pile of BS keeps on getting deeper.

 

Thanks and the same goes for you sir