tree68 Electroliner 1935 MY concern is what happens when an anomaly occurs 40 miles from a terminal. Probably along the lines of many tunnels that have an accompanying smaller tube for wiring, etc, and to allow access throughout the tunnel without having to travel in the problem tube. Such access tubes would likely have surface access at reasonable distances.
Electroliner 1935 MY concern is what happens when an anomaly occurs 40 miles from a terminal.
Probably along the lines of many tunnels that have an accompanying smaller tube for wiring, etc, and to allow access throughout the tunnel without having to travel in the problem tube. Such access tubes would likely have surface access at reasonable distances.
The tube is going to have to be divided into sections, with an airlock between each one. There will be emergency access doors in the tube. To use a door, the vacuum in that section will have to be released. Because there will be the airlocks, the vacuum will not have to be released in the entire tube. And "pods" in those sections can continue. Or, of course, return from whence they came.
Ed
7j43k tree68 Electroliner 1935 MY concern is what happens when an anomaly occurs 40 miles from a terminal. Probably along the lines of many tunnels that have an accompanying smaller tube for wiring, etc, and to allow access throughout the tunnel without having to travel in the problem tube. Such access tubes would likely have surface access at reasonable distances. The tube is going to have to be divided into sections, with an airlock between each one. There will be emergency access doors in the tube. To use a door, the vacuum in that section will have to be released. Because there will be the airlocks, the vacuum will not have to be released in the entire tube. And "pods" in those sections can continue. Or, of course, return from whence they came. Ed
If we are going to have the Hyperloop, operate at high speeds - in addition to vacuum on one side of the vehicle, pressure will be required on the other side of the vehicle, with the vehicle providing a reasonable seal between those forces in the tube in which it is operating.
Case in point on a smaller scale
https://www.youtube.com/watch?v=cqidD7kVnxY
Never too old to have a happy childhood!
BaltACD If we are going to have the Hyperloop, operate at high speeds - in addition to vacuum on one side of the vehicle, pressure will be required on the other side of the vehicle, with the vehicle providing a reasonable seal between those forces in the tube in which it is operating. Case in point on a smaller scale https://www.youtube.com/watch?v=cqidD7kVnxY
No.
It is not required to have pressure on "the other side of the vehicle" unless you are using that pressure to propel the vehicle.
It is possible to propel a vehicle through a space that is entirely a vacuum.
Think: "space ship"
7j43k BaltACD If we are going to have the Hyperloop, operate at high speeds - in addition to vacuum on one side of the vehicle, pressure will be required on the other side of the vehicle, with the vehicle providing a reasonable seal between those forces in the tube in which it is operating. Case in point on a smaller scale https://www.youtube.com/watch?v=cqidD7kVnxY No. It is not required to have pressure on "the other side of the vehicle" unless you are using that pressure to propel the vehicle. It is possible to propel a vehicle through a space that is entirely a vacuum. Think: "space ship" Ed
Despite having stayed at a Holiday Inn Experss at some point in the past. I doubt vaccum alone will provide sufficient propulsive force real world enviornment as the vehicle itself moving through the tube will create a low pressure area behind itself that will create 'drag' against the vacuum that is trying to pull the vehicle ahead. Space is not limited in scope as the Hyperloop by its very existance on Earth is.
BaltACD Despite having stayed at a Holiday Inn Experss at some point in the past. I doubt vaccum alone will provide sufficient propulsive force real world enviornment as the vehicle itself moving through the tube will create a low pressure area behind itself that will create 'drag' against the vacuum that is trying to pull the vehicle ahead. Space is not limited in scope as the Hyperloop by its very existance on Earth is.
The reason there is a semi-vacuum* in the tube is to minimize air resistance, not to propel the pod. That is done with a linear induction motor.
No motor; no go.
Note also the ridiculously bad fit of the pod in the tube:
If it were to be propelled by pressure differential, the fit would have to be MUCH better.
*The support method for the pod comes in two versions.
In one, the pod uses air bearings to support itself on rails. There has to be enough air for the compressor on the pod to supply the pressurized air. The air pressure inside the tube is 0.17% of outside the tube.
The other version is the well-known maglev.
It appears that maglev is currently being used.
7j43kIn one, the pod uses air bearings to support itself on rails. There has to be enough air for the compressor on the pod to supply the pressurized air. The air pressure inside the tube is 0.17% of outside the tube.
What is the plan to extricate passengers when the "car" gets stuck in the tube. Or are we assuming "NOTHING CAN GO WRONG..GO WRONG...GO WRONG"
Electroliner 1935 7j43k In one, the pod uses air bearings to support itself on rails. There has to be enough air for the compressor on the pod to supply the pressurized air. The air pressure inside the tube is 0.17% of outside the tube. What is the plan to extricate passengers when the "car" gets stuck in the tube. Or are we assuming "NOTHING CAN GO WRONG..GO WRONG...GO WRONG"
7j43k In one, the pod uses air bearings to support itself on rails. There has to be enough air for the compressor on the pod to supply the pressurized air. The air pressure inside the tube is 0.17% of outside the tube.
https://hyperloopconnected.org/2020/06/evacuating-the-hyperloop/
7j43kElectroliner 1935 7j43k In one, the pod uses air bearings to support itself on rails. There has to be enough air for the compressor on the pod to supply the pressurized air. The air pressure inside the tube is 0.17% of outside the tube. What is the plan to extricate passengers when the "car" gets stuck in the tube. Or are we assuming "NOTHING CAN GO WRONG..GO WRONG...GO WRONG" https://hyperloopconnected.org/2020/06/evacuating-the-hyperloop/ Ed
7j43k In one, the pod uses air bearings to support itself on rails. There has to be enough air for the compressor on the pod to supply the pressurized air. The air pressure inside the tube is 0.17% of outside the tube. What is the plan to extricate passengers when the "car" gets stuck in the tube. Or are we assuming "NOTHING CAN GO WRONG..GO WRONG...GO WRONG"
Thanks, that is a little more than I had seen. Sounds possible but I would want to see more specifics about the air locks and spacing, etc. Bean counters could cut corners.
Electroliner 1935 7j43k Electroliner 1935 7j43k In one, the pod uses air bearings to support itself on rails. There has to be enough air for the compressor on the pod to supply the pressurized air. The air pressure inside the tube is 0.17% of outside the tube. What is the plan to extricate passengers when the "car" gets stuck in the tube. Or are we assuming "NOTHING CAN GO WRONG..GO WRONG...GO WRONG" https://hyperloopconnected.org/2020/06/evacuating-the-hyperloop/ Ed Thanks, that is a little more than I had seen. Sounds possible but I would want to see more specifics about the air locks and spacing, etc. Bean counters could cut corners.
7j43k Electroliner 1935 7j43k In one, the pod uses air bearings to support itself on rails. There has to be enough air for the compressor on the pod to supply the pressurized air. The air pressure inside the tube is 0.17% of outside the tube. What is the plan to extricate passengers when the "car" gets stuck in the tube. Or are we assuming "NOTHING CAN GO WRONG..GO WRONG...GO WRONG" https://hyperloopconnected.org/2020/06/evacuating-the-hyperloop/ Ed
Not just bean counters - construction contractor cut corners too.
And you can throw in incompetence.
On the plus side, there is little if any government involvment. Yet.
Here's a fun read on another hi-tech rail system:
https://www.latimes.com/california/story/2020-08-10/california-bullet-train-bridge-snafu
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