Realism of Seaquest DSV Submarine Design: Fact or Fiction?

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Discussion Overview

The discussion revolves around the realism of the Seaquest DSV submarine design in comparison to actual submarine designs. Participants explore various aspects of the design, including structural integrity, hydrodynamics, and aesthetic considerations, while questioning how these elements align with real-world engineering principles.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants express concerns that the presence of windows in the Seaquest DSV design could represent structural weaknesses, suggesting that flat surfaces would require significant internal reinforcement.
  • Others argue that deviations from traditional shapes, such as spheres or cylinders, could increase drag due to turbulent flow, with specific mention of the design's central bulb as a potential issue.
  • There is a discussion about the implications of the submarine's shape on drag and lift, with some questioning the assertion that the design is sleek.
  • Some participants note that real-life submersibles, including those that descend into extreme depths, do utilize windows, indicating that this feature may not be as problematic as suggested.
  • A participant mentions that deep ocean vehicles often have a spherical pressure hull surrounded by an outer hull designed for better hydrodynamic performance.
  • There is a viewpoint that the Seaquest DSV should be regarded more as a piece of art rather than a practical submarine design.

Areas of Agreement / Disagreement

Participants exhibit a mix of agreement and disagreement regarding the design's realism. While some acknowledge the artistic nature of the Seaquest DSV, others contest its practicality based on engineering principles, leading to multiple competing views on the subject.

Contextual Notes

Participants highlight various assumptions about hydrodynamics and structural integrity without reaching a consensus on the implications of these factors for the Seaquest DSV design.

Whitestar
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I've often wondered how realistic the Seaquest DSV submarine design was.

Here are some attachments I've included:

Seaquest schematics 1.png
Seaquest schematics 3.jpg
Seaquest schematics 2.png


https://www.pinterest.fr/pin/326651779206382460/

I would imagine that having windows on the sub would represent structural weakness and it's overall flatness design would make any kind of storage capacity to be a nightmare.

How realistic is the Seaquest DSV submarine design compared to it's real-life counterparts?
 
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Whitestar said:
I would imagine that having windows on the sub would represent structural weakness and it's overall flatness design would make any kind of storage capacity to be a nightmare.
No more so than any other deviation from the basic best shape of a sphere( difficult to propel ) or a cylinder, such as where one would find things such as hatches. Maybe the glass for the window is of a different chemical composition from what we consider as glass.
Any flat surface would need beefy interior structural re-enforcement.
 
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The shape looks like it would induce a lot of drag from turbulent flow, while the nose would generate lift.
I suppose windows are not a showstopper - the submersibles descending into the Mariana Trench had windows after all.
 
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Bandersnatch said:
The shape looks like it would induce a lot of drag from turbulent flow, while the nose would generate lift.
I suppose windows are not a showstopper - the submersibles descending into the Mariana Trench had windows after all.

Really? How does the shape would induce tremendous drag from turbulent flow, considering it's sleek design?
 
I don't know about tremendous, but in general every shape deviation from the teardrop-shaped tube, i.e. every hole in the hull, every sharp corner or protrusion, will entrap the flow. That central bulb with its separation from the rest of the hull looks like the main offender here.
 
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Seaquest DSV
3D models are better to explain the origin of the shape - it is not that bad.

856fdf_99094fedd64c4be7a2e9620ad364a897.webp

From here

But:
..the ship has a crush depth of more than 9 km of water...

Sorry, but that makes it a big NO.
At that depth anything else but strictly circular cross sections for the pressure hull - no.
 
Some of these deep ocean vehicles have a spherical pressure hull buried in an outer hull that could be designed to let it slip through the water with less turbulence.
 
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Bandersnatch said:
I don't know about tremendous, but in general every shape deviation from the teardrop-shaped tube, i.e. every hole in the hull, every sharp corner or protrusion, will entrap the flow. That central bulb with its separation from the rest of the hull looks like the main offender here.

Interesting! :cool: So, there is a logical reason as to why real-life submarines are designed as cigar-like or teardrop-shape tubes, eh?
 
Whitestar said:
Really? How does the shape would induce tremendous drag from turbulent flow, considering it's sleek design?
Whitestar said:
Interesting! :cool: So, there is a logical reason as to why real-life submarines are designed as cigar-like or teardrop-shape tubes, eh?
It isn't sleek at all! Teardrop = sleek. Complicated shapes = not sleek.
Whitestar said:
I've often wondered how realistic the Seaquest DSV submarine design was.

How realistic is the Seaquest DSV submarine design compared to it's real-life counterparts?
The Seaquest DSV wasn't a "design" (as a submarine). It is, and should only be thought of as a piece of art.
 
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Whitestar said:
So, there is a logical reason as to why real-life submarines are designed as cigar-like or teardrop-shape tubes, eh?

https://en.wikipedia.org/wiki/USS_Albacore_(AGSS-569)

But I think your question is "why doesn't the fictional submarine look like real ones" rather than the reverse.
 
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