5.
BREAKING: Inside Impulse Space w/ Tom Mueller (FULL TOUR)
SpaceX Employee #1 | Founder & CEO of Impulse Space
SpaceX’s #1 Employee Built the Merlin Engine, Now Building Impulse Space
Tom Mueller, Founder, CEO & CTO of Impulse Space , (aka Employee #1 at SpaceX) gives Sourcery a walkthrough of the company’s Redondo Beach factory, from the avionics clean room to a live rocket engine firing in the vacuum chamber.
As SpaceX’s founding employee, Tom led development of the engines for Falcon & Dragon and started the origins of what became Starship. His proudest project, the Merlin engine, still flies Falcon 9. In this episode he explains why he left to build the next layer of space infrastructure: moving payloads & cargo around once they’re in orbit.
We tour Mira (the company’s precision maneuvering spacecraft), Helios (the vehicle bringing same-day delivery to space), and the Deneb engine, and get into how Impulse designs and builds: extreme vertical integration, 3D-printed engines, in-house composite tanks, and a “build, test, iterate” loop.
Tom also shares where he thinks the industry is heading, on nuclear electric propulsion, data centers in space, the return to the Moon, and what it was like to work with Elon Musk.
𝐓𝐈𝐌𝐄𝐒𝐓𝐀𝐌𝐏𝐒
( 00:00 ) Tom Mueller, Founder, CEO & CTO of Impulse Space ( 00:49 ) Inside Impulse Space ( 02:32 ) Avionics Bay floor ( 02:59 ) Building rockets at home ( 03:50 ) Mira and Helios ( 08:00 ) Why he left SpaceX ( 09:33 ) The Deneb Engine walkthrough ( 11:42 ) Testing in Mojave ( 12:23 ) Favorite part of the Engine ( 13:30 ) How it's 3D Printed ( 14:21 ) Why 3D Printing changes everything ( 16:54 ) Finding Talent for COPVs ( 17:28 ) No Modern hardware without software ( 19:52 ) The Mill Turn explained ( 22:42 ) Payload Deck Design ( 25:28 ) Entering the Secret Area ( 30:48 ) Thrust, Flow Rate, and 100 Sensors ( 32:13 ) Collision avoidance in Orbit ( 32:57 ) The Electric Propulsion Chamber ( 34:28 ) Nuclear Electric is the future ( 38:49 ) Data Centers in Space ( 40:28 ) SpaceX and Starlink's Growth ( 41:10 ) Working with Elon ( 42:07 ) If not CEO, then what? ( 42:32 ) Moon matters more than Mars
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Inside Impulse Space with Tom Mueller: Engines, Spacecraft, & the Case for Moving Things in Orbit
Tom Mueller, founder, CEO, and CTO of Impulse Space, walked Sourcery through the company’s Redondo Beach factory, from the avionics clean room to a live engine firing in a vacuum chamber. Along the way he covered his SpaceX origins, the spacecraft and engines Impulse is building, how the company designs and manufactures hardware, and where he thinks propulsion and compute are headed.
From Merlin to Impulse
Mueller’s career runs through the heart of modern rocketry. As the first, yes, very first, employee at SpaceX, he led development of the propulsion systems for Falcon and Dragon and started the origins of what became Starship, which he worked on for his last six years at the company. The engine he is proudest of still flies today. “My proudest development was the Merlin engine, which is currently flying on Falcon 9, the most reliable rocket engine ever developed, and also the highest thrust-to-weight of any rocket engine ever developed.”
Mueller was a well established rocket engineer before beginning his tenure at SpaceX, but it was an amateur rocket project that brought him and Elon Musk together. Today, Mueller continues to push the limits of rocketry outside work hours, building rocket engines in his garage “just to get some pre-production data on things” Impulse is working on.
The thesis behind leaving SpaceX was simple. With launch largely solved, Mueller saw the next opportunity one step further out. “Launch mostly being solved or is being solved, it’s like the next big opportunity is to move all that payload, all that cargo around in space.” Impulse exists to do in-space transportation rather than Earth-to-space transportation, a category he believes extends all the way to the Moon, including landers the company is bidding on.
Mira: The Precision Maneuvering Spacecraft