Stealth Submarine Design

[cliffhanger67]

Pictures of my two stealth submarines scaled 1:144. Actually my boats do not represent any existing submarine. It is my concept of what future submarines may look like. The longer sub is a REACBS. The shorter (white upper hull) is a Seawolf gas diving system. both subs on u tube video.
I built the hulls using hobby wood and sealed with epoxy paint.

[thor]

I think you will find submerged body stealth technology to be quite different than aircraft stealth design. Submarine stealth is more about energy absorption and flow purity than signal refraction. The radical shapes of your hulls would, most likely, prove to be quite noisy underway.

They are a very ingenious design, however. Well done!

[scott t]

Interesting use of conduit cover/hatch!
How well does it seal? Does it require silicon or grease?
What are the white objects beside the drive shaft? Batteries? Air tanks? Air cuff?
Scott T

[cliffhanger67]

Interesting use of conduit cover/hatch!
How well does it seal? Does it require silicon or grease?
What are the white objects beside the drive shaft? Batteries? Air tanks? Air cuff?
Scott T

You sir have broad knowledge for spotting it's origins. I could not afford too much money on the prototypes. I had to improvise.
Seals pretty good. Used bicycle interior rubber for gasket. No silicon or grease needed. I needed this oversized hatch on the WTC to reconnect the wires after the tubes are reconnected. The white objects are a pair of aluminum oval cylinders to serve as compressed air reservoirs. Yes, air tanks.

[cliffhanger67]

I think you will find submerged body stealth technology to be quite different than aircraft stealth design. Submarine stealth is more about energy absorption and flow purity than signal refraction. The radical shapes of your hulls would, most likely, prove to be quite noisy underway.

They are a very ingenious design, however. Well done!

Thank you. Point taken. However, my boat makes smaller wakes as it slices thru water. I still think there is merit to having slab sided surfaces than round surfaces as far as sonar footprint. I am not an authority on the subject so I cannot say it with confidence. As your comment, I can be totally wrong. Nonetheless, I wanted to have a unique shaped hull. A shape that even standing still seems to be moving. And the satisfaction of creating a concept. Thanks again.

[southern or]

They do look good, but Matt is right. Radar avoidance is about deflection and low profile, sonar is about sound absorbance and muffling. Most sonars are passive, but active sonar is really hard to fool. If you're interested, these are some good photos of the acoustic tiles on the Oscars. Most of the uneven surface on the hull are sound dampening tiles. The USN and HRN use similar methods, but they really stand out in the Oscars. If you're interested, look into the USS Albacore and USN Barbel class. They were sort of the genesis for quiet and efficient hull designs and both are/were diesel electric. USS Nautilus was really a nuclear powered Guppy hull design. After Albacore's trials you start to see the teardrop hull designs take off (with a few exceptions) and the old converted GUPPY boats getting sold off. OMSI (home of USS Blueback, a Barbel) claims she was quieter then the a lot nukes that came after her. She was also in 'The Hunt for Red October.'



Please don't take this as criticism, I actually do like them. So what all do you have in that WTC? The hull is just a fraction of the boat.

[redboat219]

The white objects are a pair of aluminum oval cylinders to serve as compressed air reservoirs. Yes, air tanks.

So you're using a Reverse RCABS, pulling air from the bladder and storing them in the aluminum "tanks" in the stern.

[scott t]

Thought the conduit cover was a clever idea.
Also like the looks of your hose and connectors.
Where did you find a source for them?
Scott T

[redboat219]

BTW, what is that upright tube on top of your wtc for, snorkel device?

[redboat219]

Inlet valve for pre-pressuring the RCABS-R bladder, right?

[cliffhanger67]

sorry for not replying sooner. got too immersed in several projects. yes, that is what it is. I got frustrated with the gas system which I have to keep track of how many dives and accidentally blowing off all the gas in one shot. this system allows me to dive and surface limited by the battery life.

[cliffhanger67]

Thought the conduit cover was a clever idea.
Also like the looks of your hose and connectors.
Where did you find a source for them?
Scott T

They are garden watering drip irrigation tube connectors from Home Depot. I had to reduce the barb lips which are quite sharp so the tubes can fit easier yet not leak. The hose are from pet shops air bubbler which I selected the more supple and thinner wall type.

[cliffhanger67]

BTW, what is that upright tube on top of your wtc for, snorkel device?

it is the charging port for the bladder, with a duck lip check valve.

[cliffhanger67]

Inlet valve for pre-pressuring the RCABS-R bladder, right?

yes. it is where I inject the air charge for the bladder using a turkey baster pump so I can measure the air volume I need.

[cliffhanger67]

the WTC contains the entire propulsion system that needs to be sealed off from water. main parts are electric motor, servos, level sensor, battery, battery charge guard, esc, pump, & solenoid valve. it is a RECABS. And out side of the WTC, in the hull, are two compressed air tanks. The bladder is inside a wetted compartment of the WTC. Thank you for the information on stealth. Appreciate the clarification. When I first conceived the hull shape, I was influenced heavily by my favorite airplane-the SR-71 Black Bird.