Hyperloop: Travel Between Cities 7-8 Hours Apart in 15 mins

Imagine if you could traverse between cities that are apart by usually 7-8 hours of drive time, merely in 15-20 minutes. Then you could live in one city and work in another. In Aug, 2015, Elon Musk published a 57 Page White Paper titled, “Hyperloop Alpha.”



Elon musk was highly disappointed when the California state government approved the high-speed rail project. According to Elon, it was, for lack of better words, a dumb move to launch a project that is both expensive/mile and one of the slowest bullet trains. Thus, he proposed the 5th mode of transport, Hyperloop.

What is Hyperloop?

Hyperloop is a proposed concept for a high-speed transportation system, that incorporates pressurized capsules hovering inside reduced pressure tubes that are mounted on top of pylons, running almost parallel to the interstate expressways.

Who will make the Hyperloop?

The idea of Hyperloop is now bigger than the man himself.

This quote aptly sums up the role that Elon is playing in steering forth the development of the “pipe dream,” Hyperloop. As a result of concerted development and design efforts of a few visionary engineers at Tesla and SpaceX, Elon was able to put together a concept paper for the next generation of transportation. However, he decided to keep it as an open source design, so that other engineers and designers from the around the world could also make their contributions. When asked how difficult it would be to ake this a reality, he says,

“I swear, its not that hard”


What are the biggest challenges?

Ergonomics: Human factor considerations are quite critical in this project. The passengers will feel a great amount of thrust in the pressurized cabins and which will, perhaps, not be suitable for kids, senior citizens or individuals with heart ailments. How do you make the user experience better than the current best experience?

Economic Consideration: Elon and his team did a great job at putting together a concept based on the implementation of some models, but keeping the expenses low while implementing is going to be a tough nut to crack. Also new economic regulations will have to be put in place for this new mode of transportation.

Design: How do you fit humans into those capsules without making them feel claustrophobic, scared and tied up? Design, in this case, is a bigger problem than the technology.

Engineering: How do you make Hyperloop power efficient with zero carbon footprint? And did I add that it has to noise free? Moreover, is it going to be magnetic levitation or wheel?

Safety: What if there is an earthquake and the high-speed capsule pops out of the pipe? We have heard numerous stories of large scale infrastructure failures such as bridges and highways, the pylons are not going to be constructed much differently.

Current Status:

The first major hyperloop event was organized at Texas A&M in Jan, where 120 colleges participated in a design competition to win a unique opportunity to test their design  on a 1-mile-long (1.6 km), 1.8-meter-diameter (6 ft) test track being built by Tesla in southern California.

Musk says he doesn’t have the time to develop the hyperloop, and he also says it’s so easy that his interns can develop it. If you are an engineer, I would like to route you to the white paper published by him 2013. It starts with a layman introduction to the concept but quickly scales to detailed mathematical equations and design specifications. Towards the end, Musk has done a financial breakdown of the project showing the economic viability.

Here’s the paper: http://www.spacex.com/sites/spacex/files/hyperloop_alpha.pdf











In the end, I’d like to quote Elon Musk, to give a glimpse of the impact of Hyperloop

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.

Darwin Falls

Expedition Hobo


Feb. 05, 2016

 The day started early in anticipation of the morning rush hour.  My brother and I left at 7:15 a.m. to get a head start on our all-morning drive to Death Valley National Park.  It’s virtually impossible to anticipate traffic here so we did have to traverse some inconveniences on the road.  An unforeseen lane closure on the 15 freeway forced us to take a detour on to side streets causing a fifteen to twenty minute delay.  Our path then cleared only to be slowed again by a smaller one lane road, highway 395, filled with eighteen wheeled cargo trucks.  I was then excited to find myself on a much less traveled highway with seemingly no one else on the road.  Little did I know that the route of this highway was through a windy mountain pass on the side of a cliff, highway 178.  It would have been a…

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Wireless Charging: Don’t throw away the cables yet!

Snip20151122_24.png If there’s one thing that is more messed up than any of you friend’s life or yours and much more complicated than any of your relationships or your friends’, its definitely the bunch of tangled wires in the front pocket of your bag and I am positive that we all can unanimously agree upon that. With a noble intent to solve this mess, the onset of wireless charging technology has commenced and we are starting to hear more and more about it. This is still the nascent stage of the technology and there’s no fixed standard or protocol that has been accepted as the most efficient way of charging wirelessly. This post talks about two different wireless charging standards, that are aggressively bidding for mass acceptance and eventually mass production.

Before I give a purview of the wireless charging standards lets talk about some of the concerns that need to be addressed for the user of this technology i.e 24 billion devices by 2020.

  1. Will the wireless charging pads/routers/docks be any more convenient to use than a USB cable?
  2. Will the time to charge be any better or even worse than a USB plugged to a laptop?
  3. Is the wireless charging accessory an add-on to the portable device or is it embedded in the internal device circuitry?
  4. If it’s an add on, then how heavy or easy is it to integrate?
  5. Is it a universal solution for mobile phones, wearables, laptops and other portable devices or do I need one for each?
  6. Do I want to be surrounded by more electromagnetic waves around me?
  7. Is it any more affordable or do I need to invest heavily into this technology?

These were just few of the many questions that are brimming at the top of my head. Lets take a look at the two different wireless charging standards that are evolving as potential solutions:

Qi Wireless Charging Standard: Qi is primarily based on the principle of electromagnetic inductance i.e.  powered by two coils of wire. The transmitting charging coil is driven by alternating current that produces an oscillating magnetic field, and induces an alternating current in the receiving coil located on the device being charged. This alternating current is then converted to  DC, thanks to Tesla, and wireless charging is achieved.


  1. Comes in two form factors: 1. embedded in the mobile device and 2. as an optional smart phone or battery pack case.
  2. Enables almost 5 W of power transfer.


  1. Necessitates a proper alignment of the mobile device and Qi Charging pad for maximum power transfer.
  2. The effectiveness varies with the size of mobile device and docking stations.
  3. The manufacturing cost for this mobile standard is pretty high, the mass production might not be a smart choice.
  4. Can only charge a single device at a time.


Rezence Wireless Charging Standard: Rezence is based on the principle of electromagnetic  resonance. The magnetic resonance is very similar to the electromagnetic induction technology, except that in the former the transmitting and receiving coil are tuned to resonate at the same frequency, better suited to loosely coupled coils.


  1. More suitable for energy transfer over relatively larger distances.
  2. Relatively less sensitive to misalignment of charging dock and portable devices.
  3. Can charge multiple devices simultaneously.


  1. Requires more power supply to the charging pad/station for more effective power transfer.
  2. The manufacturing cost is pretty high.
  3. This technology has not really penetrated the market yet and is still in the development phase.


While Qi does have an early mover’s advantage, the limitations on efficiency and manufacturing cost will become a bottleneck in this charging standard becoming am industrial norm. On the other hand, Rezence, based on magnetic resonance, is a much more practical solution, yet not scalable as the manufacturing cost is still high. There are other evolving methodologies like the Wattup Technology , that uses a radio frequency system to transmit power up to 15 feet from the charging station. I think its too early to place a bet on which technology will win the race or will it be a combination of many. However, the need of the hour is to bring down the manufacturing cost without compromising the power transfer efficiency.

Exciting times lie ahead!