Masten Unveils Xaero-B
An Update from Masten Space Systems
Since last summer, even while we focused on Xombie flights for JPL and expanding Xaero’s flight envelope, we were working. Designing, tweaking, and starting to build the next iteration of Xaero that we affectionately (and creatively) call Xaero-B. We’re finally ready to pull the curtain back and share her with you!

Helium pressurant bottles are seen early in construction thanks to an axial view of the inter-tank region. (Credit: Masten Space Systems)
Xaero-B is intended to be capable of 6 km altitude with her engine on throughout the duration of flight. She is also configurable for higher altitude flight, but we’ll talk more about that later in the flight test program. For the time being, Xaero-B will be headed through static hot-fire testing followed by initial tether flights, and then she’ll break into free flight. Once we’ve shown the ability to fly consistently to altitudes interesting to our customers, Xaero-B will be hosting payloads of many types for a myriad of companies.

Xaero-B’s Avionics module is a removable tray easily accessible above the IPA tank. (Credit: Masten Space Systems)
Helium pressurant bottles are seen early in construction thanks to an axial view of the inter-tank region. Xaero-B borrows her general configuration from Masten’s previous vehicles. The propulsion assembly with engine is of course at the base of the vehicle, followed by the insulated liquid oxygen tank and pressurant bottles. Immediately above that is the isopropyl alcohol tank and another section similar to the inter-tank region for avionics and RCS modules. The payload bay is significantly larger and occupies the majority of the nosecone. For comparison – Xaero-B stands between 15′ and 16′ tall, while Xaero stood 12′ tall when completely assembled.

Xaero’s propulsion unit – a Scimitar class engine – is seen in this photo before being integrated with the vehicle. (Credit: Masten Space Systems)
Of course, your front row seat will come via YouTube. For now, you’ll have to be satisfied with more pictures of the beautiful Xaero-B!

Composite stiffening stringers are seen before being integrated with the boat-tail. (Credit: Masten Space Systems)
Thanks for tagging along through our first virtual tour of Xaero-B. We’ll have more news for you soon!
– The Masten Crew
Additional Images

Xaero-B’s switch panel and electrical interfaces are seen in this image. (Credit: Masten Space Systems)
7 responses to “Masten Unveils Xaero-B”
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Looks beautiful!
6 Kilometers?!?
Can’t wait to see video of those flights!
(Also: Xeus. Xeus, guys, Xeus. We want Xeus. Thank you.)
“She is also configurable for higher altitude flight” – can’t wait to find out just how high 😀
Yea I wonder where those numbers are coming from? They say 6km with the engine on all the time, so I guess for higher altitude they turn off the engine and let it coast for a bit before turning it back on for landing?
Anyone know if the helium tanks are off-the-shelf or if they wind them in-house?
Like the paint-job on the propulsion unit: Do not point directly at face.
This is exemplary transparency on behalf of Masten. Sure is refreshing while Bezos’ company behaves like the USAF… what a contrast! Love it!