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I had the same question. From their FAQ (https://boomsupersonic.com/faq https://boomsupersonic.com/faq): > Will Overture use afterburners like Concorde? > No.
by doctoring 2y ago
I had the same question. From their FAQ (https://boomsupersonic.com/faq https://boomsupersonic.com/faq):
> Will Overture use afterburners like Concorde?
> No. Overture will fly without the use of afterburners, meeting the same strict regulatory noise levels as the latest subsonic airplanes. The airliner will be powered by the Symphony propulsion system. Symphony will be a medium-bypass turbofan engine designed and optimized for environmentally and economically sustainable supersonic flight.
- foobarqux 2y ago> ... meeting the same strict regulatory noise levels as the latest subsonic airplanes Extremely dishonest: as far as I can tell (CFR title 14, B36.5) there are no specific noise level regulations for subsonic cruise flight (i.e. not take-off and landing) because you can't hear subsonic aircraft at cruise altitude. On the other hand, however, you will be able to hear sonic booms.
- stetrain 2y agoI think that statement is saying it will meet those noise levels for takeoff and landing, not during cruise which will be over the ocean.
- foobarqux 2y agoIt's intentionally misleading, they are technically saying they will meet the takeoff and landing requirements (which they are required to meet by law) but implying that the plane is going to be quiet at cruise (which they want to perform over the continental United States, not just over the ocean). Moreover, their statement falsely suggests that Concorde does not "[meet] the same strict regulatory noise levels as the latest subsonic airplanes" but 36.301 says that Concorde also has to meet the same standards as subsonic planes (standards which exclude operation at cruise which didn't matter for Concorde because it was over the Atlantic).