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A comment on American Airlines agrees to purchase Boom Supersonic Overture aircraft. Parent comment

Re:American Airlines agrees to purchase Boom Supersonic Over... by phire on Tuesday August 16, 2022 @11:11AM (#32483834)
Boom were previously targeted a cruising speed of Mach 2.2, I wonder why they lowered it to Mach 1.7 with the latest design update.

Might be related selecting an engine. The previous version of the design had a fantasy engine that didn't exist (I think the specs came from a military engine that they couldn't use due to export restrictions), but now they are working with Rolls-Royce, and appear to have actually selected an engine design. It must be smaller than what they originally wanted, because they moved from a 3 engine design to a 4 engine design.

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Re:American Airlines agrees to purchase Boom Supersonic Over... by galgot on Tuesday August 16, 2022 @12:31PM (#32485124)
Supersonic heat also. Concorde was in Aluminum and at 2.1 mach it was at the very limit of what could be done in aluminum. Which required a very "tight" design, engineering marvel in fact. Go faster and one have to go for titanium, which is much more difficult to work with and manufacture.
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Re:American Airlines agrees to purchase Boom Supersonic Over... by hinkley on Tuesday August 23, 2022 @06:01PM (#32572158)
Didn't the Blackbird weep jet fuel because the seals couldn't hold when the skin was at ambient temperature?

I heard they put enough fuel in it to take off and get up to temperature and then refueled it in the air for safety reasons.

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Re:American Airlines agrees to purchase Boom Supersonic Over... by baby on Tuesday August 16, 2022 @11:58AM (#32484611)
Export restrictions are not just messing cryptography!
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Re:American Airlines agrees to purchase Boom Supersonic Over... by twic on Tuesday August 16, 2022 @12:40PM (#32485281)
Maybe military engine control systems work by sending PGP-encrypted emails to the fuel valves?
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Re:American Airlines agrees to purchase Boom Supersonic Over... by mrcartmeneses on Tuesday August 16, 2022 @01:04PM (#32485687)
But helping mute the airforces of Russia and China
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Re:American Airlines agrees to purchase Boom Supersonic Over... by lettergram on Tuesday August 16, 2022 @11:40AM (#32484288)
To me that sounds like a fuel saving option. Might extend the routes.
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