Overture
DevelopmentAircraft
Selected developmental propulsion system; not a claim that an airworthy Overture has flown.
Link Confirmed
Engine · Air
Symphony
Turbofan propulsion system under development for the Overture airliner.
by Boom Supersonic · Unveiled Dec 13, 2022
DevelopmentEngineAirMilestoneDec 2, 2025
boomsupersonic.com/symphony- Milestones5
- Operators—
- Components1
- Programs—
- Capabilities—
- Inputs—
Photo: Courtesy of Boom Supersonic · Editorial use (company media kit) · Company concept rendering, not a photograph of operational hardware. Resized and converted to WebP; metadata removed; original framing and branding retained.
Milestones20222025
Timeline5
- UnveiledConfirmed
Symphony propulsion system announced
- MilestoneConfirmed
Conceptual Design Review completed
Boom retrospectively dated completion of Symphony’s Conceptual Design Review to October 2023. The review preceded component rig testing.
- MilestoneConfirmed
Combustor rig testing announced
Boom reported testing a resin model of a one-eighth sector of the combustor at full linear scale to assess airflow and pressure. The announcement does not establish a full-engine test or the precise test start date.
- MilestoneConfirmed
StandardAero assembly partnership expanded
Boom announced an expansion of its StandardAero partnership to include future Symphony assembly and testing in San Antonio. This records the agreement announcement, not serial production.
- MilestoneConfirmed
Fuel-nozzle ignition test update published
Boom published an update describing component ignition tests. The actual test dates were not established; this milestone dates the announcement, not a full engine first run.
The latest 10 milestones. Solid entries are confirmed, outlined reported, dashed estimated or still to come; dotted italic entries are speculative. Dates show only the precision the sources give.