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SpaceX tests Falcon 9 Block 5’s landing leg retraction and preps for first reuse

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In the two months since SpaceX first debuted its Falcon 9 Block 5 rocket upgrade with a successful May 2018 launch and landing, the company has forged ahead with final Block 4 or older launch and two additional launches and recoveries of brand new Block 5 boosters, growing the fleet of flight-proven and thus flight-worthy rocket boosters to three.

Given the dramatic changes implemented in Block 5 and the pathfinder nature of these new boosters, SpaceX has spent much of the following time conducting tests and extensive analyses to verify new designs and new technology, ranging from teardowns to tests of specific components like landing legs on a recently-recovered East Coast booster.

Most prominently on that to-do list was a deep-dive teardown of inaugural Block 5 booster B1046, which was apparently completed within the last week or so – as evidenced by the sooty booster’s appearance at SpaceX’s Cape Canaveral Launch Complex 40 (LC-40) around July 24th. The purpose of that teardown was to give most of Falcon 9’s many thousands of individual and critical components a thorough examination, particularly those parts most impacted and worn by launch, reentry, and landing. That most likely includes B1046’s black octaweb and interstage thermal protection, its nine upgraded Merlin 1D engines, the “dance floor” heatshield at the rocket’s base, and landing legs, among myriad other smaller aspects.

More recently (July 27 and 28), SpaceX technicians attempted and completed the first retraction of a Block 5 booster landing leg (B1047 in Port Canaveral, Florida), compared with the current practice of removing both the landing legs and booms before rotating the recovered rocket horizontal and transporting it to a nearby refurbishment facility. Briefly discussed by CEO Elon Musk, Block 5 includes a number of landing leg optimizations, intended to improve robustness, increase reliability, and significantly ease reuse.

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“So essentially deploying the landing gear and stowing the landing gear is now a very easy thing to do [on Block 5 boosters], whereas previously it required several hours to re-stow the landing gear. Which can now be done with an actuator, pretty easily.”

SpaceX’s Falcon 9 Block 5 landing leg retraction mechanism, debuted for the first time on the East Coast, July 26-28. (Reese Wilson)

Given the fact that it took a full day to prepare for the retraction of the first leg and that the task appears to be accomplished with a fairly complex and manual lifting mechanism requiring several workers to function, it’s possible that the retraction and leg hardware described by Musk is still undergoing some form of testing or production optimization before being added to flight hardware. Nevertheless, photographer and journalist Ken Kremer observed the retraction sequence from start to finish (movement-wise) and pegged it at around 40 minutes total to go from fully deployed to fully stowed.

In all fairness, truly rapid and near-automatic leg retraction would only be of value to SpaceX once the company needs to refly Falcon 9 with less than a week or two between launches, at which point spending a day or two carefully removing or stowing landing legs outweighs the cost of adding highly specific hardware useless during flight (and thus stealing mass that could otherwise be fuel for a gentler booster recovery or a higher payload orbit).

Keeping as much of that leg retraction hardware on the ground as possible thus makes a lot of sense in today’s launch industry, where SpaceX simply has no material need for near-automatic, internally-actuated leg retraction on Falcon 9 (only necessary for extremely rapid turnaround). Still, if the company hopes to achieve Musk’s 24-hour booster turnaround challenge by the end of 2019, SpaceX technicians and engineers will need to have a solution in place to retract Falcon 9’s landing legs as quickly as practically possible – every minute will count for such a rapid reuse.

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For prompt updates, on-the-ground perspectives, and unique glimpses of SpaceX’s rocket recovery fleet (including fairing catcher Mr Steven) check out our brand new LaunchPad and LandingZone newsletters!

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.

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Elon Musk’s Neuralink posts massive update with new milestone

This is the first time Neuralink has successfully implanted two patients in a single day.

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neuralink link device with white background
(Credit: Neuralink)

Elon Musk’s Neuralink has posted a massive update with a new milestone that puts the company’s progress into perspective. Over the past few years, we have seen tremendous strides in Neuralink’s capabilities.

Now, the company has completed a new first, bringing more hope to the future of this revolutionary technology.

Neuralink’s third brain chip patient shares first video edited with BCI

Neuralink revealed in an update on Monday morning that it has officially completed two implants in a single day, with Patients 8 and 9 both receiving devices over the past weekend.

“Both participants are recovering well and in great spirits,” the company said in the short update. It did not disclose which day the surgeries were completed, but it did state explicitly that they both occurred on the same day:

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Musk said that Neuralink’s capabilities could do “life-changing good for ultimately millions, maybe billions, of people.” Right now, it is being used to help combat life-altering diseases, such as ALS, also known as Lou Gehrig’s Disease, as well as cervical spinal cord injuries.

Eventually, Neuralink could resolve things like anxiety, depression, and blindness, among many other ailments.

Its Link device also received FDA recognition for speech restoration earlier this year, marking a significant bit of progress in the program as it explores ways to cure ailments of various natures.

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Elon Musk gives key update on plans for Tesla Diner outside of LA

More Tesla Supercharger Diners are on the way, Elon Musk says, as long as the initial one is successful.

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tesla diner supercharger in los angeles california at night
Credit: Tesla

Elon Musk has given a key update on its plans for the Tesla Supercharger Diner, as the first location in Los Angeles is set to open today, July 21.

The idea for the Supercharger Diner, which resembles a 50s-style eatery with elements of futuristic technology, is seven years in the making. Many wondered whether Tesla would expand its idea for a Supercharger restaurant outside of LA, and now we have an answer directly from Musk.

Elon Musk confirms awesome new features at Tesla Diner Supercharger

The Tesla CEO said that the company will establish these types of experiences “in major cities around the world, as well as at Supercharger sites on long distance routes.”

The Supercharger Diner has plenty of ways to draw in customers, and although the food and merchandise sold at the location will not be a major contributor to Tesla’s balance sheet, where investors want to see it, it could pay off in other ways.

The Diner is not exclusive to Tesla owners, so those who drive gas cars can still stop in for a burger, fries, and a shake while roaming around Los Angeles. The features of the Diner, however, do require a Tesla vehicle.

In-car ordering and movie screens syncing to the center touchscreen are two things that Tesla owners will enjoy that other drivers will not. These might be trivial, but the experience on its own could be a way that some consider buying a Tesla.

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It might sound crazy that a singular diner experience would flip someone to buy a car, but it’s not the most outlandish thing we’ve ever come across.

The question is where Tesla will plan to build these Supercharger Diners. Musk has already indicated that Starbase, Texas, will be one location, which fits with one of his other companies, SpaceX.

Austin could be an ideal location, but New York, Miami, Washington D.C., Boston, and plenty of other popular metro areas within the U.S. could see their own diners in the coming years.

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Investor's Corner

Tesla analyst says this stock concern is overblown while maintaining $400 PT

Tesla reported $2.763 billion in regulatory credit profits last year.

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Credit: Tesla

One Tesla analyst is saying that a major stock concern that has been discussed as the Trump administration aims to eliminate many financial crutches for EV and sustainable industries is overblown.

As the White House continues to put an emphasis on natural gas, coal, and other fossil fuels, investors are concerned that high-powered sustainability stocks like Tesla stand to take big hits over the coming years.

However, Piper Sandler analyst Alexander Potter believes it is just the opposite, as a new note to investors released on Monday says that the situation, especially regarding regulatory credits, is “not as bad as you think.”

Tesla stacked emissions credits in 2023, while others posted deficits

There have been many things during the Trump administration so far that have led some investors to consider divesting from Tesla altogether. Many people have shied away due to concerns over demand, as the $7,500 new EV tax credit and $4,000 used EV tax credit will bow out at the end of Q3.

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The Trump White House could also do away with emissions credits, which aim to give automakers a threshold of emissions to encourage EV production and cleaner powertrains. Companies that cannot meet this threshold can buy credits from other companies, and Tesla has benefitted from this program immensely over the past few years.

As the Trump administration considers eliminating this program, investors are concerned that it could significantly impact Tesla’s balance sheet. Potter believes the issue is overblown:

“We frequently receive questions about Tesla’s regulatory credits, and for good reason: the company received ~$3.5B in ‘free money’ last year, representing roughly 100% of FY24 free cash flow. So it’s fair to ask: will recent regulatory changes threaten Tesla’s earnings outlook? In short, we think the answer is no, at least not in 2025. We think that while it’s true that the U.S. government is committed to rescinding financial support for the EV and battery industries, Tesla will still book around $3B in credits this year, followed by $2.3B in 2026. This latter figure represents a modest reduction vs. our previous expectation…in our view, there’s no need for drastic estimate revisions. Note that it’s difficult to forecast the financial impact of regulatory credits — even Tesla itself struggles with this — but the attached analysis represents an honest effort.”

Tesla’s regulatory credit profitability by year is:

  • 2020: $1.58 billion
  • 2021: $1.465 billion
  • 2022: $1.776 billion
  • 2023: $1.79 billion
  • 2024: $2.763 billion

Potter and Piper Sandler maintained an ‘Overweight’ rating on the stock, and kept their $400 price target.

Tesla shares are trading at $329.63 at 11:39 a.m. on the East Coast.

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