Connect with us

News

SpaceX’s Elon Musk teases in-house R&D for BFR refueling on Mars

Published

on

SpaceX CEO Elon Musk took to Twitter to reaffirm SpaceX’s commitment to developing their own technology for refueling BFR beyond Earth, noting that the high-efficiency hardware would be “critical for propellant production at Mars Base Alpha.”

Known as in-situ resource utilization (ISRU), Musk briefly commented on SpaceX’s in-house work on the tech in an October 2017 Reddit AMA (Ask Me Anything), noting that “Design is pretty far along…it’s a key part of the whole system.” His most recent tweet on June 10 reiterated ISRU’s centrality to any successful (read: sustainable) colonization of Mars, and the CEO further confirmed what was already all but guaranteed, describing a chemical reaction known as the Sabatier process.

“SpaceX is already developing high-efficiency CO2 capture with H2O to form liquid CH4 (methane) & O2.” – Elon Musk, June 2018

SpaceX’s BFR visualized just before launch at the upgraded LC-39A pad. (SpaceX)

At the most basic level, by combining heated, high-pressure carbon dioxide and hydrogen (easily derived from Mars’ CO2-rich atmosphere and wealth of water ice) and a bed of nickel or aluminum oxide, the Sabatier process can produce methane and water. Water can be easily decomposed into hydrogen and oxygen or used for drinking, cooking, and plumbing, among an infinite number of other uses. Akin to a more advanced version of what is already successfully utilized aboard the International Space Station, efficient Sabatier reactors can also be used to partially recycle wastewater and carbon dioxide (produced by humans breathing) to recover a significant fraction of pure water and methane.

In the case of SpaceX’s BFR rocket and spaceship, its propellant of choice will be liquid oxygen and methane (known as methalox) partly because of how comparatively easy it is to handle methane and to produce it on Mars, while simultaneously being a significant enabler of efficient long-term crewed spaceflight (i.e. the months-long deep space journeys to and from Mars). Less consumable mass required to keep passengers alive and happy directly translates into more payload to the surface of Mars, lowering the overall cost per kilogram delivered and thus the cost per ticket!

 

After landing on Mars, Sabatier reactors would be used to gradually refuel each Big F. Spaceship. Of course, the Sabatier process follows the laws of thermodynamics and thus requires a power source to heat the inputs, as well as cool the outputted methane and oxygen into fuel-grade cryo-cooled liquids. At least until SpaceX chooses to jump into the ring with the US nuclear (fissile) material regulation apparatus and develop or launch nuclear reactors, the most reliable power source for interplanetary colonization, that power will have to be supplied by acres upon acres of solar panels optimized to be as light, dense, and efficient as possible. If anything, the dust storm currently threatening the livelihood of Mars rover Opportunity should serve as evidence that solar power on Mars is at best a relatively cheap and simple stopgap for better power sources, especially for any long-term human presence on the Red Planet.

Advertisement

Optimally, BFS’ own internal solar array would (and likely will, at least at first) double as a source of power both in space and on the surface of Mars, neatly removing the need to waste precious cargo space on duplicate hardware. Even better, perhaps there is a chance that SpaceX’s materials scientists, engineers, and chemists can find ways to significantly optimize the Sabatier reaction for their specific needs, potentially lowering the energy required to get the desired end-product. It’s sort of a theme with interplanetary colonization, butttt… lower energy requirements translate to fewer solar panels needed to produce a given quantity of propellant in a set period of time, meaning that more payload can thus be dedicated to more important cargo like food, habitats, ISRU hardware, mining and tunneling machinery, and humans.

With any luck, followers of SpaceX may get an update on the company’s BFR plans later this year, likely just before or immediately after the first prototype spaceship is shipped to Texas for acceptance testing and a Grasshopper-style program of suborbital hops.

Follow us for live updates, peeks behind the scenes, and photos from Teslarati’s East and West coast photographers.

Teslarati   –   Instagram Twitter

Advertisement

Tom CrossTwitter

Pauline Acalin  Twitter

Eric Ralph Twitter

Eric Ralph is Teslarati's senior spaceflight reporter and has been covering the industry in some capacity for almost half a decade, largely spurred in 2016 by a trip to Mexico to watch Elon Musk reveal SpaceX's plans for Mars in person. Aside from spreading interest and excitement about spaceflight far and wide, his primary goal is to cover humanity's ongoing efforts to expand beyond Earth to the Moon, Mars, and elsewhere.

Advertisement
Comments

Elon Musk

Tesla seems to have fixed one of Full Self-Driving’s most annoying features

Tesla seems to have resolved an issue that many users of the Full Self-Driving suite complained about recently.

Published

on

tesla cabin facing camera
Tesla's Cabin-facing camera is used to monitor driver attentiveness. (Credit: Andy Slye/YouTube)

Tesla seems to have listened to drivers and owners who complained about a very annoying feature that monitors the eyes of the vehicle operator while using the Full Self-Driving suite.

Earlier this month, owners complained that versions of Full Self-Driving Supervised were too quick to alert drivers of their eyes going off the road, which is required for operation.

Tesla to fix an FSD driver monitoring annoyance, Elon Musk hints

If you’re doing something as simple as adjusting HVAC settings or changing Autopilot speed offset, the cabin-facing camera would alert the driver that their eyes need to be on the road.

It was incredibly quick to warn you, and many argued that changing these features while the vehicle is using FSD is safer than doing it while operating the car manually.

Advertisement

After several complaints, Tesla CEO Elon Musk said he agreed with the fact that FSD would warn drivers so quickly. When a user on X noted that “I can’t even glance at the display to add a nav stop without getting yelled at” and stated it was what they hated most about FSD, Musk replied, “You’re right.”

Tesla is now rolling out a new update of the FSD suite with v13.2.9, which includes various improvements. One of which appears to be a less dramatic driver monitoring system, which includes perhaps a slightly longer grace period before it will alert you to look at the road.

Several owners are reporting they’ve noticed a change, with it being less restrictive than previously:

Advertisement

Driver monitoring is very important, considering people do abuse FSD and its capabilities. It is important to pay attention, even if you are overwhelmingly confident in the abilities of FSD, because, in the event of an accident, Tesla will be the one to take the bad publicity for it.

Advertisement

This is even if the driver is found liable for the accident.

However, from personal experience, the alerts it gave were slightly dramatic, and I felt that they were over the top. I was admonished by the driver monitoring system for simply adjusting the Autopilot speed offset.

Many owners welcome this change. FSD is being refined with every update, becoming more robust, accurate, and less naggy with its requests.

Continue Reading

News

Tesla details latest safety addition with new Model Y

Tesla’s newest safety feature isn’t even visible to the human eye when you get in the new Model Y

Published

on

Tesla has detailed the addition of its latest safety feature that comes standard with the new Model Y. It is a feature that has been in development for several years and aims to assist in saving lives while also enabling other safety features.

Within the past few years, Tesla has been developing an in-cabin radar that was aimed at detecting humans left in the vehicle that typical cameras would not detect. It was a feature that was initially developed to save the lives of children, who die a handful of times each year from being left in cabins without air conditioning.

Teslarati first reported on the development of an in-cabin radar system several years ago through Federal Communications Commission (FCC) documents, which showed Tesla was hoping to gain approval for a wave sensor that would detect heartbeats instead of relying on cameras.

Tesla safety tech takes giant step with FCC approval for wave sensor

The company has started using the in-cabin radar system with the new Model Y, which has been available in the U.S. for several months. Tesla has released the new Model Y Owner’s Manual online, which gives us a first-hand look at the details it released on the various advancements it has made with the newest version of the best-selling vehicle in the world.

Advertisement

Credit: Tesla

As shown above, the Model Y’s new cabin radar is located above the rearview mirror and behind the ceiling gear shifter buttons.

Tesla describes its duties:

“Cabin radar can detect the presence of people inside the vehicle and use the measurements to determine occupancy. Cabin radar supports certain vehicle and safety features, including driver detection, seat occupancy, Occupant Classification System (OCS), and auto parking brake engagement.”

Interestingly, Tesla has added that it will be able to enable auto parking brake engagement, a great feature for when someone exits the vehicle. In the past, we knew it would handle driver and occupant protection, but we did not recognize its value as a way to enable a parking brake.

Continue Reading

Elon Musk

Tesla’s Elon Musk clarifies shocking Optimus fact

Musk clarified that while Optimus is already impressive today, it is still very far from its planned final form.

Published

on

Credit: Tesla Optimus/X

This week has been a tour de force of Tesla Optimus demonstrations. But even with the humanoid robot’s already impressive capabilities, CEO Elon Musk dropped a comment that truly made Optimus even more exciting. 

Inasmuch as Optimus today is likely one of the most advanced humanoid robots in the industry, it is still nothing close to what Tesla really wants to create.

Optimus Demonstrations

Optimus’ demonstrations this week caught headlines because they showed the humanoid robot performing impressive dance moves. Initially, a video posted by Elon Musk on social media platform X showed Optimus dancing while being tethered to a cable. A follow up video upped the ante, with Optimus performing actual ballet moves without any support.

Comments from Tesla Vice President of Optimus (Tesla Bot) Milan Kovac revealed that the humanoid robot’s movements were fully learned in simulation and zero-shot transferred to real without extra training. Elon Musk later joked that he would be accompanied by a troupe of dancing Optimus robots at the 2024 Tesla Annual Shareholder Meeting.

Not Even Close

But in another follow-up comment on X, Musk clarified that while Optimus is already impressive today, it is still very far from its planned final form. This was quite surprising as the humanoid robot is already in initial production at the Fremont Factory. Even in its current state, Optimus also looks production-ready. Elon Musk even noted that Optimus robots are just walking around Tesla’s factories today around the clock, charging themselves as needed.

Advertisement
Credit: @heydave7/X

With this in mind, one could wonder what Optimus’ final form could really be like. While the humanoid robot’s current iteration is already pretty sleek, perhaps Tesla is still developing Optimus until its appearance could mirror the robot’s static display model that the company showed off back in 2021. That Optimus model featured very human proportions and joints, making it look more like an android from a sci-fi flick than a humanoid robot with obvious mechanical parts.

Continue Reading

Trending