High Speed Boat

[kach22i]

Another twist:
Imagine that the upper aerodynamic part detaches and flies away on it's own.

Imagine the submerged pod is not rocket powered, but something more conventional.

Is what we have now considered an aircraft carrier?

Is it a "Flying Sub"?

Maybe it's just a boat and a dinghy.

[RatliffFranklin]

Originally Posted by kach22i

Another twist:
Imagine that the upper aerodynamic part detaches and flies away on it's own.

Imagine the submerged pod is not rocket powered, but something more conventional.

Is what we have now considered an aircraft carrier?

Is it a "Flying Sub"?

Maybe it's just a boat and a dinghy.

Since the surface pod would not be sustaining the stresses of a conventional hull, it would not need to have a structure as robust as a conventional boat so I suppose it could be designed to operate as an independent aircraft.

[zaltiy]

The supercavitating idea based on shkval torpedo working principles looks interesting at the beginning. However the major drawback even if you manage to fit your wetted surface into this air babble there are not a lot of things you can do with maneuvering as the babble is extremely sensitive to direction change. By the way the fins are used to pilot the torpedo with the aid of the gases. Supercavitation is already applied to hull forms i.e. supercavitating hulls and even special hulform designs are in the market that use air to reduce the wetted surface area of the hull with approximate 3% penalty on the engine's power (in order to generate and sustain the air babble).Thus without even discussing if this could be a cost effective solution, even if you do such a design it might be quite difficult to maneuver it, unless you want it to go only straight !

[RatliffFranklin]

Originally Posted by zaltiy

The supercavitating idea based on shkval torpedo working principles looks interesting at the beginning. However the major drawback even if you manage to fit your wetted surface into this air babble there are not a lot of things you can do with maneuvering as the babble is extremely sensitive to direction change. By the way the fins are used to pilot the torpedo with the aid of the gases. Supercavitation is already applied to hull forms i.e. supercavitating hulls and even special hulform designs are in the market that use air to reduce the wetted surface area of the hull with approximate 3% penalty on the engine's power (in order to generate and sustain the air babble).Thus without even discussing if this could be a cost effective solution, even if you do such a design it might be quite difficult to maneuver it, unless you want it to go only straight !

I've seen a 300 mph boat in action. The predictability and consistency of a submerged supercavitating pod would be a huge improvement. Trust me on that one.

[kach22i]

I'm thinking that the vertical fins which hold the upper body to the submerged supercav pod could pivot. The fins would then be acting as rudders without need for other rudders on the pod below.

Also I've seen in thrust vectoring diagrams where increasing the thrust on one side tends to pull the rest of the thrust with it, and in turn results in thrust vectoring without baffles or fins or elevator plates.

[RatliffFranklin]

Originally Posted by kach22i

I'm thinking that the vertical fins which hold the upper body to the submerged supercav pod could pivot. The fins would then be acting as rudders without need for other rudders on the pod below.

Also I've seen in thrust vectoring diagrams where increasing the thrust on one side tends to pull the rest of the thrust with it, and in turn results in thrust vectoring without baffles or fins or elevator plates.

Either or both could be doable.

[kach22i]

http://www.darkroastedblend.com/2007...lth-ships.html

(image credit: Popular Mechanics)

[yipster]

from here i saved some pics before they went of the net and i went berserk, which may be a good qualifacition designingthis stuff

[kach22i]

I never knew there was a "very shallow water configuration" before.

Way cool.

[FranklinRatliff]

For covert ops why not just make a semi-submersible V-hull or tunnel hull? Submerge it for stealth then blow the ballast tanks when you need to haul ass.

[kach22i]

Originally Posted by FranklinRatliff

For covert ops why not just make a semi-submersible V-hull or tunnel hull? Submerge it for stealth then blow the ballast tanks when you need to haul ass.

It's been suggested/rumored that the Special Operation Forces (SOF) already has SOC of this type.

Similar to this:
http://www.globalsecurity.org/milita...ship/boats.htm




Maybe not high-speed in the traditional sense, but high-speed in rough weather which is more important anyway.