At this year’s Paris Air Show, Boom Supersonic announced a series of new supplier deals, unveiling technical specifications for the company’s planned Overture supersonic commercial airliner and its custom Symphony engine.
There are a number of projects aimed at developing a 21st-century supersonic commercial airliner to replace the retired Anglo-French Concorde, but the pace of progress is unimpressive and details about the engineering are scant. .
Boom kept a low profile in Paris, not only announcing a slew of new partnerships to help build Overture, but also laying out some of the innovations that will be incorporated into the prototype.
Boom has added Aernnova, Leonardo and Aciturri to its existing partners. As part of the announcement, Boom also released schematics of the aircraft’s avionics, flight systems, landing gear and engine specifications.
Some of these revelations include a new fuel system that pumps fuel between tanks in flight to allow shifting of the center of gravity for subsonic and supersonic flight, and improvements in burning sustainable aviation fuel (SAF). Additionally, the control hydraulics are now triple redundant.
Aernova is developing gullwings attached to an all-composite airframe for better supersonic performance while maintaining subsonic and transonic handling. Like many supersonic wings, the Overture’s wings are thinner than the subsonic counterparts to reduce drag and improve flight efficiency.
At the same time, Leonardo will be responsible for the main engineering of the structural components of the fuselage and will act as a partner in the design and construction of the fuselage sections, including the most important wing boxes, where the wings meet the fuselage with a special profile.
Aciturri was chosen to design and develop the empennage, the tail section and its control surfaces. This includes a differentiated horizontal stabilizer for better subsonic control.
But at the heart of Overture is the Symphony engine, shown in Paris in the form of a 3D-printed one-third scale model of the design. According to Boom, the custom engine will last 25 percent longer than existing engines and will cost 10 percent less to operate over its lifetime.
The mid-duct turbofan Symphony features a 35,000-pound thrust, single-stage 72-inch (183-cm) fan, three low-pressure compressor stages, six high-pressure compressor stages, one high-pressure turbine stage, and three low-pressure turbine stages.
Blake Scholl, founder and CEO of Boom Supersonic, said: “We are incredibly proud of the progress made with Overture and Symphony by our global team of partners and suppliers as they continue to accelerate the pace towards a sustainable supersonic. The future of sonic flight.”