4.5.1. Onboard Passenger Emergency
All capsules would have direct radio contact with station operators in case of
emergencies, allowing passengers to report any incident, to request help and
to receive assistance. In addition, all capsules would be fitted with first aid
equipment.
The Hyperloop allows people to travel from San Francisco to LA in 30 minutes.
Therefore in case of emergency, it is likely that the best course of action would
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be for the capsule to communicate the situation to the station operator and for
the capsule to finish the journey in a few minutes where emergency services
would be waiting to assist.
Typical times between an emergency and access to a physician should be
shorter than if an incident happened during airplane takeoff. In the case of the
airplane, the route would need to be adjusted, other planes rerouted, runways
cleared, airplane landed, taxi to a gate, and doors opened. An emergency in a
Hyperloop capsule simply requires the system to complete the planned journey
and meet emergency personnel at the destination.
4.5.2. Power Outage
The vast majority of the Hyperloop travel distance is spent coasting and so the
capsule does not require continuous power to travel. The capsule life support
systems will be powered by two or more redundant lithium ion battery packs
making it unaffected by a power outage. In the event of a power outage
occurring after a capsule had been launched, all linear accelerators would be
equipped with enough energy storage to bring all capsules currently in the
Hyperloop tube safely to a stop at their destination. In addition, linear
accelerators using the same storage would complete the acceleration of all
capsules currently in the tube. For additional redundancy, all Hyperloop
capsules would be fitted with a mechanical braking system to bring capsules
safely to a stop.
In summary, all journeys would be completed as expected from the passenger’s
perspective. Normal travel schedules would be resumed after power was
restored.
4.5.2. Capsule Depressurization
Hyperloop capsules will be designed to the highest safety standards and
manufactured with extensive quality checks to ensure their integrity. In the
event of a minor leak, the onboard environmental control system would
maintain capsule pressure using the reserve air carried onboard for the short
period of time it will take to reach the destination. In the case of a more
significant depressurization, oxygen masks would be deployed as in airplanes.
Once the capsule reached the destination safely it would be removed from
service. Safety of the onboard air supply in Hyperloop would be very similar to
aircraft, and can take advantage of decades of development in similar systems.
In the unlikely event of a large scale capsule depressurization, other capsules
in the tube would automatically begin emergency braking whilst the Hyperloop
tube would undergo rapid re-pressurization along its entire length.
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4.5.3. Capsule Stranded in Tube
A capsule becoming stranded in the Hyperloop tube is highly unlikely as the
capsule coasts the majority of the distance at high speed and so there is no
propulsion required for more than 90% of the journey.
If a capsule were somehow to become stranded, capsules ahead would
continue their journeys to the destination unaffected. Capsules behind the
stranded one would be automatically instructed to deploy their emergency
mechanical braking systems. Once all capsules behind the stranded capsule had
been safely brought to rest, capsules would drive themselves to safety using
small onboard electric motors to power deployed wheels.
All capsules would be equipped with a reserve air supply great enough to
ensure the safety of all passengers for a worst case scenario event.
4.5.4. Structural Integrity of the Tube in Jeopardy
A minor depressurization of the tube is unlikely to affect Hyperloop capsules or
passengers and would likely be overcome by increased vacuum pump power.
Any minor tube leaks could then be repaired during standard maintenance.
In the event of a large scale leak, pressure sensors located along the tube
would automatically communicate with all capsules to deploy their emergency
mechanical braking systems.
4.5.5. Earthquakes
California is no stranger to earthquakes and transport systems are all built with
earthquakes in mind. Hyperloop would be no different with the entire tube
length built with the necessary flexibility to withstand the earthquake motions
while maintaining the Hyperloop tube alignment.
It is also likely that in the event of a severe earthquake, Hyperloop capsules
would be remotely commanded to actuate their mechanical emergency braking
systems.
4.5.6. Human Related Incidents
Hyperloop would feature the same high level of security used at airports.
However, the regular departure of Hyperloop capsules would result in a
steadier and faster flow of passengers through security screening compared to
airports. Tubes located on pylons would limit access to the critical elements of
the system. Multiple redundant power sources and vacuum pumps would limit
the impact of any single element.
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4.5.7. Reliability
The Hyperloop system comprising all infrastructure, mechanical, electrical, and
software components will be designed so that it is reliable, durable, and fault
tolerant over its service life (100 years), while maintaining safety levels that
match or exceed the safety standard of commercial air transportation.
4.6. Cost
The total cost of the Hyperloop passenger transportation system as outlined is
less than $6 billion USD (Table 8). The passenger plus vehicle version of
Hyperloop is including both passenger and cargo capsules and the total cost is
outlined as $7.5 billion USD (Table 9).
Table 8. Total cost of the Hyperloop passenger transportation system.
Component
Cost
(million USD)
Capsule
54
(40 capsules)
Capsule Structure & Doors
9.8
Interior & Seats
10.2
Compressor & Plumbing
11
Batteries & Electronics
6
Propulsion
5
Suspension & Air Bearings
8
Components Assembly
4
Tube
5,410
Tube Construction
650
Pylon Construction
2,550
Tunnel Construction
600
Propulsion
140
Solar Panels & Batteries
210
Station & Vacuum Pumps
260
Permits & Land
1,000
Cost Margin
536
Total
6,000
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Table 9. Total cost of the Hyperloop passenger plus vehicle transportation system.
Component
Cost
(million USD)
Cargo Capsule
30.5 (20 capsules)
Capsule Structure & Doors
5.5
Interior & Seats
3.7
Compressor & Plumbing
6
Batteries, Motor & Electronics
4
Propulsion
3
Suspension & Air Bearings
5.3
Components Assembly
3
Passenger Only Capsule
40.5
(30 capsules)
Capsule Structure & Doors
7.4
Interior & Seats
7.6
Compressor & Plumbing
8.2
Batteries, Motor & Electronics
4.5
Propulsion
3.8
Suspension & Air Bearings
6
Components Assembly
3
Tube
7,000
Tube Construction
1,200
Pylon Construction
3,150
Tunnel Construction
700
Propulsion
200
Solar Panels & Batteries
490
Station & Vacuum Pumps
260
Permits & Land
1,000
Cost Margin
429
Total
7,500
5. Conclusions
A high speed transportation system known as Hyperloop has been developed in
this document. The work has detailed two versions of the Hyperloop: a
passenger only version and a passenger plus vehicle version. Hyperloop could
transport people, vehicles, and freight between Los Angeles and San Francisco
in 35 minutes. Transporting 7.4 million people each way every year and
amortizing the cost of $6 billion over 20 years gives a ticket price of $20 for a
one-way trip for the passenger version of Hyperloop. The passenger only
version of the Hyperloop is less than 9% of the cost of the proposed passenger
only high speed rail system between Los Angeles and San Francisco.
An additional passenger plus transport version of the Hyperloop has been
created that is only 25% higher in cost than the passenger only version. This
version would be capable of transporting passengers, vehicles, freight, etc. The
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passenger plus vehicle version of the Hyperloop is less than 11% of the cost of
the proposed passenger only high speed rail system between Los Angeles and
San Francisco. Additional technological developments and further optimization
could likely reduce this price.
The intent of this document has been to create a new open source form of
transportation that could revolutionize travel. The authors welcome feedback
and will incorporate it into future revisions of the Hyperloop project, following
other open source models such as Linux.
6. Future Work
Hyperloop is considered an open source transportation concept. The authors
encourage all members of the community to contribute to the Hyperloop design
process. Iteration of the design by various individuals and groups can help bring
Hyperloop from an idea to a reality.
The authors recognize the need for additional work, including but not limited
to:
1.
More expansion on the control mechanism for Hyperloop capsules,
including attitude thruster or control moment gyros.
2.
Detailed station designs with loading and unloading of both passenger
and passenger plus vehicle versions of the Hyperloop capsules.
3.
Trades comparing the costs and benefits of Hyperloop with more
conventional magnetic levitation systems.
4.
Sub-scale testing based on a further optimized design to demonstrate
the physics of Hyperloop.
Feedback is welcomed on these or any useful aspects of the Hyperloop design.
E-mail feedback to
hyperloop@spacex.com
or
hyperloop@teslamotors.com
.
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