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- Thrust (5/20/22)
Thrust (5/20/22)
Good morning, and happy Friday. Welcome to the 142 new readers who joined the Payload crew this weekâwe're psyched to have you.
In today's newsletter:𧨠Phase Four expandsđ Starlinerâs journey đĽ ICYMI
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New Lease, New Place

El Segundo-based Phase Four yesterday finalized a lease to build a second factory and scale production of its Maxwell engine product line. The new Hawthorne facility will be over 3X larger than Phase Fourâs current plant, and capable of cranking out 100 engines a year.
Phase Fourâs founding vision was to create a new type of propulsion for constellation operators, CEO Beau Jarvis told Payload. The company now sees a big opportunity to reinvent propulsion systems and their supply chains by switching to cheaper, easier-to-source fuel.
The pitch: Phase Four is developing electric propulsion systems with four key differentiators:
Quicker time-to-market/orbit (sub-four month lead times)
Mass manufacturable (thanks, in part, to miniaturized components)
Fuel-agnostic (a work in progress)
Affordability
The technology: Phase Four is developing what it calls the RF Thruster (RF = radiofrequency), which it is adapting to run on unconventional fuel.
Six of Phase Fourâs Maxwell Block 1 engines are already on-orbit and four more are going up this year on commercial spacecraft.
The startup will integrate its second-gen RF Thruster into Block 2 engines, which should enter production this quarter.
To be clear, Phase Fourâs V1 Maxwell still runs on traditional propellants. But the north star is plasma thrusters powered by new types of fuel. Onboarding advanced propellants is a major R&D initiative underway at Phase Four.
The opportunity: Returning to the topic of affordability, âmost of our customers are building these large constellations of satellites,â Jarvis said, and âcanât afford a million dollar or even half million dollar system.â The unit economics donât work, he said.
But 80% of the upmass delivered into LEO today is small satellites, Jarvis said. Most of those birds are still running on technology first developed in the Cold War. The technology performs well and if it ainât broke, donât fix it, right?
Not quite. Recent events have conspired to throw legacy propulsionâs cost structure out of whack:
Supply chains are already tight as it is.
A high share of traditional propellantsâpurified noble gasses such as xenon and kryptonâare produced in Russia and Ukraine. Those sources are now offline.
âAnother large amount comes from China,â Jarvis said, which wonât sell into the US as much anymore âbecause they have their own space industry theyâre developing.â
Sign of the times
Six months ago, a kilogram of xenon would set you back $5,000. âFast forward to a couple weeks ago, and we got a quote from a local supplier that was over $30,000,â Jarvis said. Seeing the writing on the wall, prime contractors have bought up most of the noble gas supply. âWe actually took a bet in February where we bought as much, frankly, as we could afford,â Jarvis said.
Whatâs next? Phase Four is targeting Q4 for the Hawthorne ribbon-cutting and plans to double headcount by yearâs end.
The startup is also currently raising a Series B, and while it may be rough out there in the capital markets, Jarvis isnât dissuaded. âFor companies with working technology, existing customers and demonstrated product demand, there are still solid opportunities to raise in the current market,â he said.
Third Time's the Charm

Image: ULA
Last night, the OFT-2 mission for Boeingâs Starliner launched successfully to a circular orbit atop an Atlas V rocket. Itâs been a long time coming for the second commercial crew vehicle.
Back in 2019, Boeing attempted its first orbital flight test of Starliner, the original OFT mission. The craft suffered software glitches and was never able to reach the correct orbit that would have allowed it to rendezvous with the ISS. Disaster struck again last summer, when the first attempt at OFT-2 had to be rolled back from the pad because of a dozen or so faulty valves.
OFT-2 returned to the pad, its valves freshly re-sealed and software triple-checked, for its second attempt. The launch went smoothly, delivering the uncrewed Starliner capsule to a stable orbit. Starliner is expected to dock with the ISS this evening.
ICYMI: Debris Deep Dive
Orbital debris is frequently referred to as a tragedy of the commonsâand that it is. But itâs also a product of short-termism, space races, and governmentsâ reticence to acknowledge their countriesâ impact on Earthâs orbital environment.
We dove into the issue of orbital debrisâwhat it is, whoâs responsible for it, what the consequences could be, and why the issue is so difficult to regulate and address. Experts in active debris removal, space situational awareness, and space policy spoke with us to help us map out the current state of the orbital environment.
Stay tuned for the second installment, where weâll go deeper into the political debates around debris mitigation.
In Other News
Voyager 1, a probe launched 45 years ago, is acting funky.
SpaceX paid a flight attendant $250,000 in severance to settle a sexual misconduct claim against Elon Musk in 2018, according to Insider.
The Pentagon has privately expressed doubts about Boeingâs financial situation, The Air Current reports.
McKinsey and the World Economic Forum published a report on how space can drive development and sustainability on Earth.
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