X-Bow Systems Inc. (X-Bow) has just marked a significant milestone in defense manufacturing with the third successful flight of its Bolt Rocket. This isn’t just a rocket launch—it’s a step forward for the future of solid rocket motors (SRMs) and what they could mean for the US military.

The XB-32 motor, part of X-Bow’s Bolt rocket family, is the largest advanced manufactured solid propellant motor ever flown, and it’s shaking up what we thought possible in affordable, large-scale SRM production.

So, What’s an SRM, and Why Does it Matter?

Solid rocket motors are an essential part of the modern military and space toolkit. They’re commonly used as boosters to give payloads a lift, whether it’s satellites going into Low Earth Orbit (LEO) or military payloads needing quick, short-distance launches.

Unlike liquid-fuel rockets, which store fuel and oxidizers separately and need pumps to mix them at launch, SRMs store their fuel and oxidizer together in a solid form. This approach requires less maintenance, as the solid propellant remains stable over time without risk of degradation, which makes SRMs a reliable, low-maintenance option for defense and aerospace.

The Bolt Rocket’s SRM is a prime example of how advanced manufacturing can shift the landscape.

X-Bow Systems uses a patented manufacturing process that involves additive manufacturing and 3D printing, which makes producing SRMs faster, more affordable, and scalable. This approach allows for rapid iterations and upgrades to meet the evolving needs of defense contractors and commercial users.

As X-Bow CEO Jason Hundley put it, they’re able to “design, produce, and test SRMs with unprecedented speed, precision, and scalability.”

Why is This Important for the US Military?

Let’s talk about why the US military is paying attention to what X-Bow is doing with the Bolt Rocket.