Timeline for How to emulate 40ft (12 m) of water? [closed]
Current License: CC BY-SA 3.0
35 events
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| Jul 8, 2015 at 3:01 | review | Reopen votes | |||
| Jul 8, 2015 at 23:31 | |||||
| Jul 2, 2015 at 20:23 | comment | added | Phil | Municipal water pressure is usually 30 to 50 psi. Connect a hose to your tank and let it fill with water (no air). Add a pressure gauge to see what pressure you tested with. You will need a bleed valve at the top to ensure no air remains. | |
| Jul 2, 2015 at 18:35 | review | Reopen votes | |||
| Jul 2, 2015 at 19:07 | |||||
| Jul 2, 2015 at 16:50 | history | closed |
Kyle Kanos Jim DanielSank ACuriousMind♦ Kyle Oman |
Not suitable for this site | |
| Jul 2, 2015 at 15:25 | comment | added | SkipBerne | I suggested a fiberglass pool filter, and a bicycle air pump. trying to retrieve any thing that has gone awry at 40 feet is a very dangerous and iffy proposition. unless you have a substantial boat +20' you cant have a good floating lab. pool filters are good to 50 psi, come in serviceable openings and are common place. safe cheap, sorry expensive. | |
| Jul 2, 2015 at 15:08 | comment | added | Jim | This question seems to be about the application of scientific principles to solve a problem. Specifically, it asks for suggestions to use physics to find a way to create the same pressure as 40ft of water without having to use a 40ft deep tank of water. This is a textbook engineering question and I'm voting to close it as such | |
| S Jul 2, 2015 at 9:46 | history | suggested | Volker Siegel | CC BY-SA 3.0 |
Fixing numbered list , adding to title
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| Jul 2, 2015 at 9:36 | comment | added | Selene Routley | ... learn, you have a pretty cool new skill to take from the project. Open water diving in a pair with proper training is extremely safe. You'll need a qualified engineer to design a pressure tank that is safe. | |
| Jul 2, 2015 at 9:30 | comment | added | Selene Routley | I really do think that MSalter's answer is the only one you should attempt. The dangers of pressurized vessels are otherwise too great: what MSalter's method does is pressurize with a low potential energy agent: if your vessel ruptures, there is only $\frac{1}{2} m\,g\,h$ worth of energy stored to propel shards and otherwise do damage, where $m$ is the mass of water in the pipe. Even this would be dangerous for certain container materials. If you don't have enough space with MSalter's method, getting two people on board to scuba dive for tests is by far the safest method. If you need to ... | |
| Jul 2, 2015 at 9:28 | review | Suggested edits | |||
| S Jul 2, 2015 at 9:46 | |||||
| Jul 2, 2015 at 9:06 | history | edited | Toozinger | CC BY-SA 3.0 |
Answered popular questions
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| Jul 1, 2015 at 20:36 | comment | added | Thijser | @David Richerby A diver is useful if you want to see how your robot is performing. Sure if you have enough recording set up and don't need have any knowledge of the area you are going to test in then you don't need a diver. But it's nice to know how deep a body of water is (a diver will know this more exactly then anyone else) and whatever there is going to be any current. It can also be nice to have a diver with you for more extensive testing (placing objects near the robot ext.). So I would definitifly give them a call and maybe ask one of them to come with. | |
| Jul 1, 2015 at 18:47 | comment | added | Kyle Kanos | Outside of the need to replicate 17 psi, there is zero informational content to this question. Without additional information to constrain the problem (e.g., materials you do have, size restrictions), this question is too broad to be usefully answered here. | |
| Jul 1, 2015 at 18:46 | review | Close votes | |||
| Jul 2, 2015 at 16:50 | |||||
| Jul 1, 2015 at 18:34 | history | edited | Danu |
edited tags
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| Jul 1, 2015 at 18:22 | comment | added | Dan Bryant | If you plan to test in a lake/reservoir, I recommend getting in touch with the appropriate authority in charge of the lake, which is typically a park service of some sort. Be prepared to demonstrate that you have the capability to remove the vehicle from the lake if something goes wrong and it is flooded, that the vehicle won't release any hazardous chemicals during operation and that you have a way to safely cut power remotely in case it runs out of control. They might also just say no outright, so some diplomacy is advised. | |
| Jul 1, 2015 at 16:29 | comment | added | David Richerby | @Thijser Why do you need a diver? A boat and a 40ft rope is all that's needed, right? | |
| Jul 1, 2015 at 16:05 | history | tweeted | twitter.com/#!/StackPhysics/status/616276326518013952 | ||
| Jul 1, 2015 at 15:40 | comment | added | Thijser | You might want to look for a diving club near you. If there is one near you they will know where you can easily get to 40ft/13 meters of depth in reasonably clear water with an experienced diver near you. | |
| Jul 1, 2015 at 15:36 | answer | added | SkipBerne | timeline score: 1 | |
| Jul 1, 2015 at 14:39 | answer | added | Level River St | timeline score: 4 | |
| Jul 1, 2015 at 13:31 | history | protected | Qmechanic♦ | ||
| Jul 1, 2015 at 13:20 | answer | added | mmesser314 | timeline score: 0 | |
| Jul 1, 2015 at 13:02 | comment | added | jfa | I agree with @CaptainCodeman, I see a lake in your future. That's about 2.3 atms. On top of that, you have to be able to control and test the robot in a pressurized environment. Depending on the resources of your high school, that may be beyond what the school is willing to provide. | |
| Jul 1, 2015 at 12:59 | answer | added | CaptainCodeman | timeline score: 1 | |
| Jul 1, 2015 at 12:55 | comment | added | CaptainCodeman | Depending on your location, the cheapest option may be to travel to a river/lake/ocean. | |
| Jul 1, 2015 at 12:25 | answer | added | B.Pascal | timeline score: 12 | |
| Jul 1, 2015 at 12:21 | answer | added | MSalters | timeline score: 21 | |
| Jul 1, 2015 at 12:20 | answer | added | paul | timeline score: -2 | |
| Jul 1, 2015 at 10:43 | comment | added | Level River St | How big is your robot? would it fit inside a domestic pressure cooker? otherwise you're going to have difficulty finding a vessel that can accomodate it and be sealed properly. As calculated by John Rennie, the forces on the lid are considerable. | |
| Jul 1, 2015 at 8:56 | answer | added | CuriousOne | timeline score: 4 | |
| Jul 1, 2015 at 8:48 | history | edited | Qmechanic♦ | CC BY-SA 3.0 |
deleted 7 characters in body; edited tags
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| Jul 1, 2015 at 8:16 | answer | added | John Rennie | timeline score: 15 | |
| Jul 1, 2015 at 8:03 | review | First posts | |||
| Jul 1, 2015 at 13:05 | |||||
| Jul 1, 2015 at 8:00 | history | asked | Toozinger | CC BY-SA 3.0 |