Aerodynamic of shipping contatners on trains

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Discussion Overview

The discussion revolves around the aerodynamics of shipping containers and capsules when transported in a train-like system. Participants explore the implications of design methodologies, efficiency, and the technical challenges associated with such a transportation system.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Joe Maxwell is developing a transportation system and seeks insights on the aerodynamic performance of shipping containers in a train configuration, particularly how the number of units affects aerodynamics.
  • Some participants express skepticism about the non-profit nature of the project, suggesting that improved transportation efficiency could lead to significant profits.
  • Joe mentions that platforms will utilize battery-run air turbines to achieve levitation, raising questions about the feasibility and efficiency of this approach.
  • One participant questions the practicality of using a large battery for levitation, suggesting that it may counteract the benefits of the system.
  • Another participant emphasizes the efficiency of traditional railroad trains with roller bearings and notes that aerodynamics and rolling resistance have been extensively studied.
  • Joe clarifies that the battery is primarily for initial lift and that once at speed, air will be used to maintain levitation through adjustable scoops.
  • Joe seeks comparative data on the aerodynamic efficiency of the proposed system versus individual rail cars.

Areas of Agreement / Disagreement

Participants express varying levels of skepticism and curiosity about the proposed system's feasibility and efficiency. There is no consensus on the effectiveness of Joe's design or the practicality of the proposed methods.

Contextual Notes

Participants highlight the need for wind-tunnel testing to validate aerodynamic claims, indicating that computer modeling may not capture all real-world variables. There are also concerns about the power requirements for levitation and the overall efficiency of the proposed system compared to existing technologies.

Joe Maxwell
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I am developing a new transportation system using Industrial Design methology and need to know aerodynamic smoth shipping contatners and capsules moving in ihe form of a train would be (as described in my blog). How does the number of units in the train effect its aerodynamics.http://www.transportation-system.blogspot.com/

This is a not for profit project and open to anyone.

Thanks
Joe Maxwell
 
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Welcome to the PF, Joe. Your blog does mention that you are an ID consultant, which borders a bit on advertising (which is not allowed per the PF Guidelines). But your project sounds interesting, so I'm not going to delete the link to your blog at this point.

Also, it's hard to believe that this project is not for profit. Improving the efficiency of the transportation system is going to result in a lot of profit for somebody somewhere...
 
I am retired and my blog is a labor of love. There are enough people in there trying but with our government and their attitude on transportation it will not be easy, too big and too Bureaucratic. There are billions that can be saved, but I have no idea who could put it together even though it could pay for itself while being built. There would also be a huge amount of resistance from all over. Progress is very costly for many people. Check some of the links on the blog to see what is happening.
 
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Hi, Joe. I don't have time to read more than the 'Concept' section today, but I agree with Berkeman that it's very interesting.
Forgive me if this is answered elsewhere in the document, but I have a quick question. How do you plan to levitate the platforms before you get up enough speed for your ram-air bearings to work? Are they just on wheels until then?
Anyhow, I think that you'll end up having to do wind-tunnel testing to determine your aerodynamics. Computer modelling can get pretty close, but there seems to be something always popping up in real life that a programme doesn't foresee.
 
Danger,
That is covered. Each platform would have a battery run air turbine to keep it afloat. From what I understand it would only take around 8 lbs. per sq. into hold a loaded shipping container up. It would be somewhat an air conveyer turned up side down.

I don't need exact figures, only comparative ones. Some idea how much more efficient than individual cars.
 
have a battery run air turbine to keep it afloat.
That would have to be a big battery, which would seem to defeat the purpose of floating the container.

8 psi over the areas of large number of containers would seem to represent a lot of work, and one would seemingly need a generator with distribution system in order to provide sufficient power.

Railroad trains with roller bearings are quite efficient. Rolling resistance and wind resistance (aerodynamics) have been studied extensively.
 
The battery would only be used to get the platform up to speed on the entrance ramp, out the off ramp and encase of a total power failure. at speed air is rammed into the platform through adjustable scoops. Look at my thoughts on wheels in the problem section.

I still would like to know aerodynamically efficient the capsules and containers would be in the form of a closely coupled train as described in the blog.

Thanks for the comments,
Joe
 
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