Up to Speed: April

Colorado Selected for Symphony Engine Sprint Core Testing

Our Symphony engine is coming “home” to Colorado for its first wave of testing. Recently, we selected the Colorado Air and Space Port (CASP) in Watkins to test the engine’s sprint core. We’re investing $3-5 million in the site to customize it for testing, which is slated to start later this year. Located 35 miles from our Denver headquarters, CASP was previously used for hypersonic engine development.As regulations continue to evolve, we’re witnessing the exciting development of a new era of faster flight.

Ban-niversary Marks 52 Years of Slow Flights

April 27, 2025, marked the 52nd anniversary of the ban on supersonic flight over land. For over half a century, the U.S. has imposed a speed limit in the skies: a federal ban prohibiting civilian aircraft from exceeding the speed of sound over land (even when flights don’t make a sonic boom you can hear on the ground).
The outdated ban slowed down more than just flights; it stifled innovation in aviation.

Behind the Scenes: XB-1 Livestream

The XB-1 livestream delivered epic views during supersonic flights, making it possible for anyone, anywhere, to watch the flights in real time. But how exactly did we do it? Ruslan Pshichenko, Boom Flight Test Maintenance Engineer, walks us through the safety considerations, plus how we fit a Starlink mini antenna into the backseat of a T-38.