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DeepSpace: Firefly’s Alpha rocket to get a massive upgrade with ion thruster boost stage ⚡ ?

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Eric Ralph · June 18th, 2019

Welcome to the latest edition of DeepSpace! Each week, Teslarati space reporter Eric Ralph hand-crafts this newsletter to give you a breakdown of what’s happening in the space industry and what you need to know. To receive this newsletter (and others) directly and join our member-only Slack group, give us a 3-month trial for just $5.


Although the company quietly teased the concept for the first time several months ago, Firefly has released a detailed update on its Orbital Transfer Vehicle (OTV), an ambitious spacecraft meant to complement its Alpha and Beta launch vehicles. If Firefly can deliver on the independent spacecraft’s technical promises, the combination of Alpha (~$15M) and OTV could help usher in a new era of small, high-performance satellites launched on small, high-performance rockets.

In fact, Rocket Lab – currently the world’s only truly commercial smallsat launch provider – has already demonstrated the power of this new paradigm, albeit on a smaller scale. After just one failed attempt, the first successful orbital launch of the company’s Electron rocket also marked the surprise debut of a tiny third stage used to circularize the payload’s orbit. After five successful uses in orbit, Rocket Lab has taken its third stage a step further, adding redundant avionics, solar arrays, and more to effectively create an independent spacecraft/satellite bus called Photon. By all appearances, Firefly’s OTV is much larger than Photon but is functionally quite similar. By taking advantage of Alpha’s significant performance benefits compared to Electron, Firefly has designed a third stage/spacecraft capable of delivering hundreds of kilograms to geostationary orbit, the Moon, and (perhaps) beyond.

Changing the delta V game

  • Generally speaking, OTV is quite small. According to Firefly’s Payload User’s Guide, the spacecraft will weigh just 130 kg (285 lb) dry and will carry perhaps 30-70 kg of xenon fuel for its electric ion thrusters. This is a critical differentiator relative to Rocket Lab’s Photon and kick stage, which rely on the inefficient (but simple and reliable) Curie chemical rocket engine.
    • According to Firefly, Alpha is designed to launch a max of 1000 kg (2200 lb) to a 200 km (125 mi) low Earth orbit (LEO). Given OTV’s ~200 kg wet mass, Alpha + OTV offer some incredible capabilities relative to the rocket’s size and design.
    • Powerful electric thrusters undeniably add a lot of complexity to any spacecraft that chooses to use them but that pain is often deemed worth it for the benefits they can offer. Most notably, ion propulsion is extremely efficient.
This graph demonstrates the potential performance benefits of Alpha + OTV relative to Alpha on its own. (Firefly)
  • Thanks to OTV’s efficient electric thrusters and light carbon composite structure, the potential benefits of Alpha + OTV are hard to believe for a rocket as (relatively) small as Alpha.
  • On its own, Alpha can only deliver a meaningful payload (~100 kg) to perhaps 4000 km (2500 mi). With OTV, Alpha can suddenly deliver ~600 kg to a circular geostationary orbit (~36,000 km, 22,300 mi) and upwards of 400-500 kg into orbit around the Moon.
    • For reference, despite weighing around 10% of Falcon 9, Alpha and OTV would offer perhaps 10-15% the performance of Falcon 9 to trans lunar injection (TLI). This utterly defies the general rule of thumb that as a rocket gets significantly smaller, its performance (particularly to higher-energy orbits) deteriorates disproportionately.
  • With OTV, Alpha – nominally a ~$15M launch vehicle relegated to LEO payloads – becomes an incredibly intriguing option for small geostationary communications satellites and small-scale public and private exploration of the Moon, near Earth asteroids, and maybe even Mars/Venus.
  • According to a senior Firefly investor and board member, Firefly hopes to have OTV ready for its orbital debut on Alpha’s third launch, tentatively scheduled no earlier than mid-2020.

Alpha readies for launch

  • Of course, OTV is a bird without wings without Firefly’s Alpha launch vehicle. Weighing 54,000 kg (120,000 lb) fully-fueled, Alpha is a two-stage rocket that will stand 1.8m (6ft) wide and 29m (95ft) tall. Powered by four Reaver engines, the first stage will produce ~740 kN (166,000 lbf), approximately 85% of one of Falcon 9’s nine Merlin 1D engines.
  • Firefly is working relentlessly towards an ambitious December 2019 Alpha launch debut, a target that will probably slip into early 2020 due to the inherent complexity of the task at hand. Critically, though, Firefly has made a huge amount of progress towards that goal.
    • Notably, Firefly’s second stage – powered by one vacuum-optimized Lightning engine – has already been qualified for launch with full-duration static fires at the company’s Texas facilities. Firefly is in the midst of preparing for an identical series of qualification tests for its more powerful first stage, shown above in the form of one Reaver engine attached to an Alpha S1 thrust structure.
    • As early as July, a full set of four Reaver engines will be installed on the same thrust structure to perform static fire testing, much like SpaceX gradually added Merlin 1D engines during Falcon 9 development testing.
  • If all goes as planned, Firefly will have completed its first Alpha rocket – first stage, second stage, and payload fairing – by October or November 2019. Expect plenty of new photos and updates as Alpha nears its inaugural launch.
Thanks for being a Teslarati Reader! Become a member today to receive an issue of DeepSpace in your inbox each week!

– Eric

 

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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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Tesla Model S makes TIME’s list of Best Inventions

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(Credit: Tesla)

Tesla’s flagship sedan, the Model S, has officially been named one of TIME Magazine’s Best Inventions of the 2000s. It joins its sibling, the Model 3, which made the list in 2017.

The Model S is among the most crucial developments in the automotive industry in the last century.

Just as the Ford Model T made its mark on passenger transportation, becoming the first combustion engine vehicle to be successfully developed and marketed at a time when horse and buggy were the preferred mode of transportation, the Model S revolutionized things a step further.

Although it was not the first EV to be developed, the Tesla Model S was the EV that put EVs on the map. In 2012, TIME recognized the Model S as a piece of technology that could truly transform the car industry.

The publication wrote:

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“This electric four-door sedan has the lines of a Jaguar, the ability to zip for 265 miles (426 km) on one charge—that’s the equivalent of 89 m.p.g. (2.6 L/100 km)—and touchscreen controls for everything from GPS navigation to adjusting the suspension.”

Looking back, TIME was right on. The Tesla Model S was truly a marvel for its time, and it, along with the OG 2008 Roadster, can be seen as the first two EVs to push electrification to the mainstream.

As TIME described this year, the Model S “proved to be a game-changing experience for electric vehicles,” and it ended up truly catalyzing things for not only the industry, but Tesla as well.

The Model S acted as a fundraiser of sorts for future vehicles, just as the Model X did. They paved the way for the Model 3 and Model Y to be developed and offered by Tesla at a price point that was more acceptable and accessible to the masses.

The Current State of the Tesla Model S

The Model S contributes to a very small percentage of Tesla sales. The company groups the Model S with the Model X and Cybertruck in its quarterly releases.

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Last year, that grouping sold 85,133 total units, a small percentage of the 1.789 million cars it delivered to customers in 2024.

Things looked to be changing for the Model S and the Model X this year, as Tesla teased some improvements to the two cars with a refresh. However, it was very underwhelming and only included very minor changes.

Lucid CEO shades Tesla Model S: “Nothing has changed in 12 years now”

It appeared as if Tesla was planning to sunset the two cars, and while it has not taken that stance yet, it seems more likely that the company will begin taking any potential options to heart.

CEO Elon Musk said a few years ago that the two cars were only produced due to “sentimental reasons.”

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Tesla analysts are expecting the stock to go Plaid Mode soon

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Credit: Tesla Mania

Tesla (NASDAQ: TSLA) has had a few weeks of overwhelmingly bullish events, and it is inciting several analysts to change their price targets as they expect the stock to potentially go Plaid Mode in the near future.

Over the past week, Tesla has not only posted record deliveries for a single quarter, but it has also rolled out its most robust Full Self-Driving (Supervised) update in a year. The new version is more capable than ever before.

Tesla Full Self-Driving v14.1 first impressions: Robotaxi-like features arrive

However, these are not the only things moving the company’s overall consensus on Wall Street toward a more bullish tone. There are, in fact, several things that Tesla has in the works that are inciting stronger expectations from analysts in New York.

TD Cowen

TD Cowen increased its price target for Tesla shares from $374 to $509 and gave the stock a ‘Buy’ rating, based on several factors.

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Initially, Tesla’s positive deliveries report for Q3 set a bullish tone, which TD Cowen objectively evaluated and recognized as a strong sign. Additionally, the company’s firm stance on ensuring CEO Elon Musk is paid is a positive, as it keeps him with Tesla for more time.

Elon Musk: Trillionaire Tesla pay package is about influence, not wealth

Musk, who achieved each of the tranches on his last pay package, could obtain the elusive title as the world’s first-ever trillionaire, granted he helps Tesla grow considerably over the next decade.

Stifel

Stifel also increased its price target on Tesla from $440 to $483, citing the improvements Tesla made with its Full Self-Driving suite.

The rollout of FSD v14.1 has been a major step forward for the company. Although it’s in its early stages, Musk has said there will be improved versions coming within the next two weeks.

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Stifel raises Tesla price target by 9.8% over FSD, Robotaxi advancements

Analysts at the firm also believe the company has a chance to push an Unsupervised version of FSD by the end of the year, but this seems like it’s out of the question currently.

It broke down the company’s FSD suite as worth $213 per share, while Robotaxi and Optimus had a $140 per share and $29 per share analysis, respectively.

Stifel sees Tesla as a major player not only in the self-driving industry but also in AI as a whole, which is something Musk has truly pushed for this year.

UBS

While many firms believe the company is on its way to doing great things and that stock prices will rise from their current level of roughly $430, other firms see it differently.

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UBS said it still holds its ‘Sell’ rating on Tesla shares, but it did increase its price target from $215 to $247.

It said this week in a note to investors that it adjusted higher because of the positive deliveries and its potential value with AI and autonomy. However, it also remains cautious on the stock, especially considering the risks in Q4, as nobody truly knows how deliveries will stack up.

In the last month, Tesla shares are up 24 percent.

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Tesla lands permission to test Full Self-Driving in new country

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tesla showroom
(Credit: NicklasNilsso14)

Tesla has landed permission to begin testing its Full Self-Driving suite in a new country: Sweden.

Tesla has been working to expand its Full Self-Driving suite across the world. Currently, it is available in seven countries: the United States, Canada, Mexico, Puerto Rico, Australia, New Zealand, and China, where it is referred to as “City Autopilot.”

Capabilities of the Full Self-Driving suite differ in each region based on the approvals given to Tesla by regulatory agencies.

In Europe, Tesla has been attempting for a long time to launch FSD in various countries, but regulatory red tape has been prolonging the company’s ability to launch the suite.

However, Sweden appears to be ready to allow Tesla to test FSD in some passenger and public locations, according to the country’s Transport Agency.

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On X, a Swedish Tesla owner named Alexander Kristensen, says he received direct confirmation from the Transport Agency that Tesla has “received permission to test automated vehicles.”

The full email said:

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“Tesla received permission to test automated vehicles last week. This includes three vehicles and all state highways and expressways in Sweden.”

Tesla has already been working with the Swedish Transport Agency on the first steps of Full Self-Driving’s approval. The company and the Transport Agency spent two weeks assessing data gathered during a Formal Site Assessment Test, or SAT.

Based on the communication from the Transport Agency to Kristensen, it appears the company has passed the SAT and will now be able to perform its own testing within the market.

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This approval seems similar to the approval Tesla received in U.S. states for Robotaxi operation. Nevada and Arizona have both given Tesla approval for Robotaxi testing, but passengers are not allowed in the vehicles quite yet.

Instead, company employees perform the testing, which is likely what will go on in Sweden until the Transport Agency gives the company a green light to roll FSD software out to customers.

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