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Old 03-31-2021, 04:49 PM   #1 (permalink)
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an interesting take on marine architecture

https://thespeedzine.com/wp-content/...amic-Boats.jpg

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Old 03-31-2021, 05:22 PM   #2 (permalink)
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It looks like a bulked up hydroplane racer



Was there a picture of the hull configuration?

edit: Nevermind.


https://thespeedzine.com/prototype-aerodynamic-boats/

Why am I fantasizing about making a yacht out of two PBY-5A Catalinas?
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Old 03-31-2021, 05:35 PM   #3 (permalink)
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hull design

'wish we had a 3/4, or plan-view from above. That would tell the tale.
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Old 03-31-2021, 07:23 PM   #4 (permalink)
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The parasitic drag pulling the craft down, must be countered with the partially capture air bubble under the craft so it doesn't have to go full airborne like a Wing In Ground Effect (WIG).

Advanced Aerodynamic Vessels, SAS
https://www.aavessels.com/




https://www.aavessels.com/shuttle/




https://www.aavessels.com/crewboat-25/

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Old 03-31-2021, 08:21 PM   #5 (permalink)
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That is cool.
I did not review the link, does the craft have any aero trim elements to fine tune attitude depending on speed or cargo/fuel/etc?

Seems to me, its a great candidate to do back flips ala mulsanne straight antics.

Last edited by j-c-c; 03-31-2021 at 08:26 PM..
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Old 03-31-2021, 08:29 PM   #6 (permalink)
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Quote:
Originally Posted by j-c-c View Post
That is cool.
I did not review the link, does the craft have any aero trim elements to fine tune attitude depending on speed or cargo/fuel/etc?

Seems to me, its a great candidate to do back flips ala mulsanne straight antics.
Go to their website and poke around, looks to have some rather large flaps at the rear underside.

https://www.aavessels.com/crewboat-25/


Porpoising and or oscillating pitching might be computer automated controlled I'm guessing.
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Old 03-31-2021, 09:42 PM   #7 (permalink)
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Quote:
Virtually no wake at high speed
An arguable claim. It's a good platform but not s great as the M-hull which has asymmetrical hulls and the center hull to create the counter-rotating vortexes. It has a flatter wake.
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Old 03-31-2021, 10:12 PM   #8 (permalink)
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Hold my..hiccup...my wodka.
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Old 04-01-2021, 03:33 AM   #9 (permalink)
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Quote:
Originally Posted by freebeard View Post
An arguable claim. It's a good platform but not s great as the M-hull which has asymmetrical hulls and the center hull to create the counter-rotating vortexes. It has a flatter wake.
I've read some people in a boat forum really poo poo the M-hull as a marking gimmick. I however like it and see some merit to it.

The craft in the opening post is very much like the ram-air SES (Surface Effect Ship) diagrams of the 1970's that did not have flexible bow and stern skirts nor lift fans.

In fact, the Russians and Finnish had made the very first hovercraft or skimmers in the 1930's, full scale, armed and worked somewhat similar to opening post.

Toivo Kaario and Hovercraft – an Interesting Experiment
An Interesting Experiment -Toivo Kaario and Hovercraft in Finland

Quote:
Photo, Left: P-9 during initial trials in Spring 1939- the Red Star and ”CCCP” were painted on the sides to confuse any Observers, as it was known that the USSR was conducting trials on a similar type of craft designed by a Soviet engineer, Vladimir Levkov. It was hoped that any sightings of the Finnish craft would be confused with the Soviet Navy craft that had been observed carrying out trials.
From the link above:
Merivoimat military hovercraft High Speed Torpedo Boat P 10 Trials 1939


.................................................. ...

LEVKOV’S HOVERCRAFT
https://weaponsandwarfare.com/2015/0...vs-hovercraft/

Quote:
The first ever air-cushion vehicle L-1 before trials, the Pleshcheyevo Lake, Russia, October 1935.


Apparently still much confusion about which craft were Russians and which were actually Finnish.

The Hovertank however is all Russian.

Russia's WWII Hover Tank
https://www.guns.com/news/2012/05/05...ladimir-levkov


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Last edited by kach22i; 04-01-2021 at 03:39 AM..
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Old 04-01-2021, 03:38 AM   #10 (permalink)
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Quote:
I've read some people in a boat forum really poo poo the M-hull as a marking gimmick. I however like it and see some merit to it.
Wakes don't lie.

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