At Boom Supersonic’s research and development (R&D) Supercenter near its headquarters in Denver, a milestone has just rolled through the doors on the back of a flatbed truck. It is not a jet engine or a wing assembly, but something just as important to the future of flight: a massive Mazak Quick Turn 450MY lathe, roughly the size of a UPS truck. The machine is the very first to arrive at Boom’s in-house machine shop, and it is set to play a crucial role in building Symphony, the sustainable 35,000-pound-thrust jet engine that will one day power Boom’s supersonic airliner, Overture.
This is not your everyday factory floor addition. The Mazak 450MY is a modern marvel of precision engineering. It gives Boom a one-stop solution for machining some of the most demanding rotating components that live deep inside a supersonic engine.
With a Y-axis and live-tool turret, the machine can rough-turn a titanium shaft, mill key slots, and drill intricate oil passages in a single setup. That level of integration means fewer moves between machines, tighter concentricity, and shorter production times — all of which are vital when developing a brand-new engine from scratch.
The components this machine will shape have to endure extraordinary conditions. At 15,000 revolutions per minute, even a slight deviation in geometry can lead to performance losses or catastrophic failures.
That is why Boom is investing heavily in state-of-the-art in-house machining, and this first machine represents the start of a highly specialized workflow that puts quality, control, and speed in the hands of its engineers. In the world of high-performance aerospace, being able to cut, measure, and finish parts in one go is more than a convenience. It is a competitive edge.
This setup is a sharp contrast to how things were done in the early days of supersonic flight. When Concorde’s engines were built more than half a century ago, the process resembled a restoration shop for a vintage car. Individual components were sent to various specialists across borders, and it took the coordinated effort of two nations just to finish one engine. Boom’s approach is more like a modern EV factory, where precision robotic cells handle machining, inspection, and finishing without the part ever leaving the fixture.
The raw materials might be similar — think titanium and high-strength nickel alloys — but today’s advances in CNC machining and tooling coatings mean an entire engine’s worth of complexity can be handled by a machine that fits in a space no longer than a mini school bus.
The Boom Superfactory itself is a major achievement. Purpose-built to produce the Overture jet at scale, the facility stretches across 62 acres at the Piedmont Triad International Airport. Once in full swing, it will handle final assembly and testing for Overture, which Boom aims to have flying by 2027. Designed to cruise at Mach 1.7 while running on sustainable aviation fuel, the aircraft will carry between 64 and 80 passengers at twice the speed of today’s fastest commercial jets.
The arrival of the Mazak 450MY may not be as dramatic as the rollout of a completed jet, but it signals the start of something just as important. With its machine shop beginning to come online, Boom Supersonic is entering the phase where concepts take shape in titanium and steel. It is the quiet beginning of a very loud future.
