XB-1 to Mach 1
The XB-1 flight test program continues to speed up, progressing toward supersonic flight.
XB-1 Sets the Foundation for Overture
The XB-1 program provides the foundation for the design and development of Overture, while establishing a safety-first culture in engineering and manufacturing.
The Supersonic Blueprint
Designed in collaboration with its pilots, XB-1 demonstrates the technical innovations that enable Overture—and is born of an engineering and manufacturing culture where safety and quality come first.
Augmented Reality Vision System
Two nose-mounted cameras, digitally augmented with attitude and flight path indications, feed a high resolution pilot display enabling excellent runway visibility. This system enables improved aerodynamic efficiency without the weight and complexity of a movable nose.
Digitally Optimized Aerodynamics
Engineers used advanced computational fluid dynamics simulations to explore thousands of designs for XB-1. The result is an optimized design that combines safe and stable operation at takeoff and landing with efficiency at supersonic speeds.
Carbon Fiber Composites
XB-1 is almost entirely made from advanced carbon fiber composite materials, enabling it to realize a sophisticated aerodynamic design in a strong, lightweight structure.
Supersonic Intakes
XB-1’s engine intakes slow supersonic air to subsonic speeds, efficiently converting kinetic energy into pressure energy, allowing conventional jet engines to power XB-1 from takeoff through supersonic flight.
Supersonic Propulsion
Three General Electric J85 engines will propel XB-1 to breakthrough speeds, producing a combined maximum thrust of 12,300 pounds (lbf).
Safety First
XB-1 was designed with pilots in the loop and established the foundation of our safety-first culture. Pilots and engineers conducted exhaustive testing of flight hardware and software, including hundreds of hours in the simulator evaluating the aircraft, operations, and human factors.
XB-1 Program Developments
Nov 16, 2024 – XB-1 Flight 8
XB-1 cleared the requirements for aircraft handling qualities with the stability augmentation system off.
Nov 5, 2024 – XB-1 Flight 7
XB-1 completes key system checks, hitting a new top speed of Mach 0.82 (499 KTAS) and reaching 23,015 feet.
Oct 25, 2024 – XB-1 Flight 6
XB-1 continues to expand the flight envelope and gain altitude, reaching 20,000 feet.
Oct 7, 2024 – XB-1 Flight 5
XB-1 flew faster and higher than it has yet at Mach .69 and 17,800 feet. The team continues to expand the flight envelope as XB-1 readies for supersonic flight.
Sep 21, 2024 – XB-1 Flight 4
XB-1 reached its fastest speed yet (Mach 0.6) and the team applied elevated g-forces of 2.5g in preparation for supersonic flight.
Sep 13, 2024 – XB-1 Flight 3
XB-1 reached maximum pitch and yaw attitudes, the team checked environmental control system (ECS) performance, and the landing gear was retracted and extended at a higher speed.
Aug 26, 2024 – XB-1 Flight 2
XB-1 successfully retracted and extended its landing gear for the first time and demonstrated a new stability augmentation system.
Apr 16, 2024 – XB-1 Receives Special Flight Authorization
The Federal Aviation Administration (FAA) granted XB-1 a first-of-its-kind Special Flight Authorization (SFA) to Exceed Mach 1 in airspace within the R-2508 Complex over Mojave. This SFA also extends to XB-1’s chase plane.
Mar 22, 2024 – XB-1 Flight 1
XB-1 takes flight at the Mojave Air & Space Port, flown by Boom Chief Test Pilot Bill “Doc” Shoemaker.
Mar 2024 – High-Speed Taxi Tests
In preparation for first flight, XB-1 completes four high-speed taxi tests, reaching speeds of 140 knots.
Fall 2023 – XB-1 Taxi Test Events
XB-1 progresses into taxi tests on the airfield and runway, resulting in successful events first achieving 60 knots, then 89 knots, and advancing to 94 knots during a medium-speed taxi test in November 2023.
Aug 24, 3023 – XB-1 Advances Flight Preparations
XB-1 progresses through extensive ground testing and receives an experimental airworthiness certificate from the Federal Aviation Administration (FAA), following a detailed aircraft inspection.
Mar 2023 – XB-1 in Mojave
XB-1 arrives in Mojave to continue ground testing and preparations for first flight.
2021-2022 – Systems Integration & Engine Runs
XB-1 completes the activation and testing of all of XB-1’s internal subsystems and engine runs, culminating in the first low speed taxi test in November 2022.
Oct 6, 2020 – Rollout
XB-1 is fully assembled and revealed to the world for the first time.
Sep 29, 2020 – Weight on wheels
XB-1 stands on its own for the first time, with the full weight of the aircraft on wheels.
Aug 2020 – Engines and inlets installed
Three J85-15 engines and supersonic inlets are installed to the aft fuselage.
Aug 2020 – Aft fuselage install
The fully titanium aft fuselage is joined to the forward fuselage.
Jul 2020 – Nose landing gear passed drop tests
The nose landing gear passed a series of drop tests at incrementally higher energy limits, verifying the landing gear’s performance up to an extreme of 184 kts (212 mph) at 15 feet per second decent rate.
Jun 2020 – Forward fuselage closeout
The final significant bonding operation, closing of the forward fuselage, is complete.
Mar 2020 – Wing testing
A simulation of the most extreme flight conditions verifying the wing design and approved the structure safe for flight.
Mar 2020 – Lefthand fuselage skin install
The left hand skin install was the largest single bond operation, closing out the the left and right sides of the fuselage and providing a glimpse of the aircraft’s final shape.
Feb 2020 – First flight of second-generation simulator
Assembly of the second-generation simulator enabled teams to finalize aircraft flight control design and enhance the pilot training program.
Jan 2020 – Wing closeout
The wing structure transformed from a skeleton frame to a completely closed unit during this eight-hour bond event.
Dec 2019 – Nose landing gear and cockpit bond
This twenty hour bond event joined the nose landing gear bay and cockpit together, sealing the structure into the right hand fuselage skin.
Inside Look at XB-1’s Flight Test Program
XB-1 Chief Flight Test Engineer Nick Sheryka speaks to Boom’s progressive approach to flight testing, which is rooted in the idea that safety is the ultimate mission.
XB-1 First Flight
The inaugural flight of Boom’s supersonic demonstrator aircraft marks a major milestone toward the return of supersonic travel.
First Flight by the Numbers
238 KTS
(273 mph) MAX AIR SPEED
12 MIN
Time in air
7,120 FT
Altitude
62.6 FT
Nose to tail
12.3K
Lbs of thrust
First
Independently developed
Supersonic jet
Together as One
Meet the team that built the world’s first independently developed supersonic jet.
“Today, XB-1 took flight in the same hallowed airspace where the Bell X-1 first broke the sound barrier in 1947. I’ve been looking forward to this flight since founding Boom in 2014, and it marks the most significant milestone yet on our path to bring supersonic travel to passengers worldwide.”
Blake Scholl
FOUNDER & CEO
Chief Test Pilot Tristan “Geppetto” Brandenburg
Geppetto is a graduate of the United States Naval Test Pilot School and TOPGUN Adversary. He has completed 2500 total flight hours in 30 different aircraft and executed over 200 carrier arrested landings. He tested new systems on the F/A18 Super Hornet before they were released to the fleet. Geppetto piloted XB-1’s second flight, and will be at the controls for its first supersonic flight.
“Being in the air with XB-1 during its maiden flight is a moment I will never forget. The team has been working hard to get to this point, and seeing today’s flight through mission completion is a huge accomplishment for all of us.”
Tristan “Geppetto” Brandenburg
Chief TEST PILOT
“The most rewarding aspect of my role is seeing XB-1 grow out of nothing more than an idea into what’s almost a living, breathing thing. Testing XB-1’s systems, first individually and then together as an integrated vehicle, is like breathing life into an elegant, albeit very complex machine. It’s my life’s passion.”
Nick Sheryka
CHIEF FLIGHT TEST ENGINEER, XB-1
Returning Civil Supersonic Flight to The Skies
Two decades after Concorde’s retirement, the first flight of XB-1 marks the return of a civil supersonic aircraft to the skies and paves the way for the return of mainstream supersonic travel onboard Overture, Boom’s sustainable supersonic airliner.
“Boom Supersonic is the first civil business entity to create its own X-plane, a supersonic demonstrator. This milestone is on the critical path to deliver Overture, the first supersonic transport aircraft to enter service in over half a century. It is such an exciting time to be involved!”
Ric Parker
Chair of Singapore Aerospace Programme, former Rolls-Royce CTO and Boom Advisory Council member
“I’ve been waiting over 20 years for an environmentally friendly successor to Concorde and XB-1’s first flight is a major landmark towards my dreams being realized. When I last flew Concorde in 2003 I knew that this day would come. The first flight of the XB-1 supersonic demonstrator is a significant achievement toward making sustainable supersonic flight a reality, aboard Overture – my #1 choice as the successor to Concorde.
Congratulations to Blake Scholl, all at Boom and especially its pilot, Bill “Doc” Shoemaker. Having been Concorde’s Chief Pilot I envy his role in this exciting return towards mainstream supersonic flight.”Captain Mike Bannister
former Chief Concorde Pilot for British Airways