Hydrofoils

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Jay Kempf

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Ski's ,foils , gull shapes , tunnels , BOAT shapes , surface effect, light weight , 100%composite , a COMPLETELY NEW design to incorporate many and all things ,is any one capably of thinking about using all these things in combination all in one object ?
NO!
 

WonderousMountain

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I am and did,

A retracting ski, boat shaped, gull wing rear engine fan, with ducts (tunnels). But seriously, thinking is not the only issue, there is also the matter of doing. Which is where craftsmanship meets opportunity. Ah futuristic communism, where everyone has access to everything they need because it's in the script. I miss you.

LuPi
 

Dana

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Ski's ,foils , gull shapes , tunnels , BOAT shapes , surface effect, light weight , 100%composite , a COMPLETELY NEW design to incorporate many and all things ,is any one capably of thinking about using all these things in combination all in one object ?
No. It's generally inadvisable to try too many new things at the same time, making it difficult or impossible to isolate problems.

You have all these [so you say] great ideas. Why don't you pick one, and do some actual work developing it? Otherwise, you'll continue to be [correctly] branded as just another impractical dreamer.

Dana

P.S. I congratulate you in writing an entire post without one single exclamation point! Another punctuation hint, the space goes after the comma, not before.
 

mcrae0104

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Ski's ,foils , gull shapes , tunnels , BOAT shapes , surface effect, light weight , 100%composite , a COMPLETELY NEW design to incorporate many and all things ,is any one capably of thinking about using all these things in combination all in one object ?
Roadable! You left out roadable! ;)
 

tunnels

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All that I listed are used in just a single tunnel hull and all work really well through a large speed range from a sedate 10 ks all the way to over a 160 ks each one of those things plays a important part and al work together even the ski planks in the bottom of each hull , its the last 200 mm of each one that its riding on !
 

tunnels

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It's generally inadvisable to try too many new things at the same time, making it difficult or impossible to isolate problems.

Again !!t all about knowing and understanding the beast you are creating !! if there are problems its because you don't fully understand what you are doing or why you did what you did !!
 
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tunnels

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silence yet again !!
when you look at planes to make something do you see what the designer has created ?? do you understand what the designer has spent hours drawing and all the knowledge and skills involved ?

Its at that stage of design I like to sit and study what im looking at for a couple of hours and visualise I my mind the finished project and what everything Is and specially how everything works and why it should works the way it should !
If you see something that could be added do you do just that Knowing it will change the end product an enhance its performance ?
 

ramboat

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Gatineau, Quebec / Canada
I had hopes to get to 65 mph with hydrofoils. Purchased Heliciel software to evaluate what would work and found only at that point that cavitation over 50 mph is the beast killing me. To avoid the cavitation you need to keep enough pressure on the upper part of the wing (hydrofoil). To achieve this the wing is so thin that it barely have enough strength with carbon fiber and still 15 mph short of my target. If someone have suggestions on a profile that could do better than naca 1408 please let me know. The Hydroptere touched that speed there might be a solution.
Until I find solutions to the following list I will explore floats profile to get me to 65 mph.
Major concerns about hydrofoils :
Hard to put on trailer retractable system gets complex and heavy really fast
Beaching without a retractable system is risky at best,
Carbon fiber structural construction (different than building estetic parts) adds another layer of complexity.
If anything hits the foil it will most likely break. Any debry wraped around could create such additional drag to be above structural limits.

Am I stuck in my box?
 

tunnels

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Sep 6, 2014
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china is my home , place of work but was born in N
I had hopes to get to 65 mph with hydrofoils. Purchased Heliciel software to evaluate what would work and found only at that point that cavitation over 50 mph is the beast killing me. To avoid the cavitation you need to keep enough pressure on the upper part of the wing (hydrofoil). To achieve this the wing is so thin that it barely have enough strength with carbon fiber and still 15 mph short of my target. If someone have suggestions on a profile that could do better than naca 1408 please let me know. The Hydroptere touched that speed there might be a solution.
Until I find solutions to the following list I will explore floats profile to get me to 65 mph.
Major concerns about hydrofoils :
Hard to put on trailer retractable system gets complex and heavy really fast
Beaching without a retractable system is risky at best,
Carbon fiber structural construction (different than building estetic parts) adds another layer of complexity.
If anything hits the foil it will most likely break. Any debry wraped around could create such additional drag to be above structural limits.

Am I stuck in my box?
you might be out of the box but what you standing In you need gum boots .
The foil thing really an truly is a complete waste of time ! but relying soul on one thing alone will never work !!, add the ski thing to get your extra speed and let them work in combination together !
 
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