Physics of a tank of water (aquarium on a moving vehicle)

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Discussion Overview

The discussion revolves around the physics and safety considerations of transporting a large aquarium in a moving vehicle, specifically a converted school bus. Participants explore the implications of securing a fully filled aquarium, the potential hazards during collisions, and alternative designs for the aquarium system.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions whether a fully filled aquarium would behave like a solid mass, suggesting that it might pose safety risks during a collision.
  • Another participant emphasizes the potential danger of the aquarium acting as a heavy projectile in an accident, proposing extreme measures to mitigate this risk.
  • Suggestions are made to use tempered glass for safety and to conduct crash tests to assess the aquarium's stability during transport.
  • Concerns are raised about the forces acting on the aquarium during emergency braking, including the need for secure restraints to counteract these forces.
  • A participant proposes the idea of using multiple smaller tanks connected by hoses as a safer alternative to a single large aquarium, especially for smaller fish.

Areas of Agreement / Disagreement

Participants express varying opinions on the safety and feasibility of transporting a large aquarium in a moving vehicle. No consensus is reached regarding the best approach to secure the aquarium or the overall safety of the plan.

Contextual Notes

Participants mention specific forces and safety factors but do not provide detailed calculations or dimensions of the aquarium, leaving some assumptions and dependencies unresolved.

Who May Find This Useful

This discussion may be of interest to individuals considering transporting aquariums in vehicles, RV enthusiasts, and those involved in vehicle safety and design.

pengyou1
I'm sorry if I am intruding on this forum, but I have a question that requires a knowledge of physics. I am preparing a plan now to convert a school bus into an RV. I have raised tropical fish all of my life and would like to keep doing so. I want to put a 125 aquarium in my RV so that it is perpendicular to the sides. My question: if I keep the tank completely full of water (and fish, gravel, etc) and it is completely covered with no airpockets in the aquarium, will the aquarium behave like a solid mass? I don't want to put baffles in the tank because it would detract from the aesthetic value of the tank, and I am afraid of any sloshing that might occur.
 
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Yes it will behave like a solid mad in those conditions. Moor important, it might behave like a 1400 pound lethal projectile in case of a collision. Your plan sounds unsafe to me.
 
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anorlunda said:
More important, it might behave like a 1400 pound lethal projectile in case of a collision. Your plan sounds unsafe to me.
Maybe wire some explosive shaped charges to the aquarium and tie them to collision sensors? That way if there is a collision that could launch the aquarium through the bus, it gets blown up so it's just flying water. (Sorry about the fish...)

https://s7d2.scene7.com/is/image/PetSmart/5257038?$sclp-prd-main_large$
5257038?$sclp-prd-main_large$.jpg
 
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Start with tempered glass that doesn't break into sharp shards. Then add a crash test. You could probably hire a junk yard to lift and drop a scrap school bus containing a fish tank.

Perhaps easier, ask experienced RV owners about carrying heavy objects at highway speeds.
 
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anorlunda said:
Then add a crash test. You could probably hire a junk yard to lift and drop a scrap school bus containing a fish tank.
I think the MythBusters have a consulting buisiness on the side...
 
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Consider if emergency breaking at 60 mph in 180 ft you will experience about 0.8g's of acceleration resulting in a tipping force on you tank of about 1000 lbs . So secure it to counteract this force. Keep in mind that there will be a pressure on the forward glass face . This will result in some leakage. What is the area of the front of the tank.. Can the glass face sustain this magnitude of force? Need to know the dimensions of the tank. For safety purposes add a 50% strength factor for the restraining straps.
 
BTW, @pengyou1 -- Are your fish small? If so, can you architect your aquarium system to be several smaller tanks that are easier to secure, all connected by clear hoses? I haven't seen an aquarium system like that, but it might be smart for a vehicle-based system to minimize the size of each tank...
 
berkeman said:
BTW, @pengyou1 -- Are your fish small? If so, can you architect your aquarium system to be several smaller tanks that are easier to secure, all connected by clear hoses? I haven't seen an aquarium system like that, but it might be smart for a vehicle-based system to minimize the size of each tank...

Brilliant!
 
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