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Old 14th Jan 2024, 23:18
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X59

NASA unveils its X-59 quiet supersonic jet (msn.com)

If you're a fan of high-tech aircraft, you're going to love this!

A much-awaited unveiling and a promise to revolutionize commercial aviation.

“Today we are witnessing history,” said John Clark, Lockheed Martin Aeronautics vice president.

NASA and Lockheed Martin unveiled their newly painted X-59 quiet supersonic aircraft on Friday.

“An x-plane is a symbol of our collective ambition to redefine the future, and in this case, it's the future of supersonic travel,” said NASA Deputy Administrator Pam Melroy.
designed for a quieter type of supersonic flight.

NASA's Quesst mission is testing the experimental aircraft to see if it can fly without creating the thunderous sonic booms associated with supersonic flights.

“This groundbreaking technology is a beacon guiding us towards the future where visibility barriers in aircraft design can be overcome with this inventive solution,” said Melroy.

In 1973, the federal aviation administration banned overland supersonic commercial flights because of the disruption caused by those sonic booms.

It's a prohibition that's still in effect today, but NASA hopes the X-59 can overcome that and pave the way for a new generation of commercial aircraft that can travel faster than the speed of sound.

“We also designed special features into the airplane, such as its top-mounted engine with a deck under the nozzle, which ensures that the shockwaves don't merge behind the aircraft and create that disruptive shock below,” said Melroy.

NASA plans to do test flights over U.S. cities in 2026 and ask residents how much noise they can detect from the aircraft.

NASA hopes the data will help it determine if the ban on overland supersonic commercial flights can be lifted.

“The people we're relying on to give us honest, unbiased feedback on the X-59's noise will be the key to getting the data we need for the mission to be a success,” said NASA associate administrator Jim Free.

The aircraft features a sharp, elongated beak-like nose section that helps shape the shock waves the jet produces during flights.

Pilots flying the X-59 can't see out of the plane's forward windscreen because it doesn't have one.

NASA says pilots use an external vision system that has a forward-facing camera, a cockpit-mounted display screen, and custom image processing software to generate "an augmented reality view."

“The external vision system has the potential to influence future aircraft designs where the absence of the forward-facing window may prove advantageous for engineering reasons as it did for us,” said Melroy.

The supersonic jet will reach a speed of Mach 1.4, or 925 mph, while surfing the skies at an altitude of 55 thousand feet, powered by a single engine.

The X-59 has been in the works at Lockheed Martin's "Skunk Works" facility in Palmdale, California, since 2019.

NASA plans its first flight sometime in 2024 and further testing through 2027.
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Old 15th Jan 2024, 06:22
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What are the rules for single-engine passenger flights over water ?

Edit - "Commercial" seems not to have the usual meaning as the photo shows no obvious room for pax.
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Old 15th Jan 2024, 06:50
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Originally Posted by B Fraser
What are the rules for single-engine passenger flights over water ?

Edit - "Commercial" seems not to have the usual meaning as the photo shows no obvious room for pax.
Err... It's an X-plane.... A government aircraft that is doing research, but doing research for future commercial aircraft. Definitely not a pax aircraft - single seat and the pilot doesn't even have a forward view apart from the camera system!
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Old 15th Jan 2024, 08:05
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In other words, it's a technology demonstrator and is as far removed from commercial aviation as the HP.115 was from Concorde. The use of "commercial" was a tad misleading.
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Old 15th Jan 2024, 08:23
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Originally Posted by B Fraser
In other words, it's a technology demonstrator and is as far removed from commercial aviation as the HP.115 was from Concorde. The use of "commercial" was a tad misleading.

A much-awaited unveiling and a promise to revolutionize commercial aviation.

It's a prohibition that's still in effect today, but NASA hopes the X-59 can overcome that and pave the way for a new generation of commercial aircraft that can travel faster than the speed of sound.

NASA hopes the data will help it determine if the ban on overland supersonic commercial flights can be lifted
I'd say those (all the relevant uses of the word "commercial") are all realistic - nowhere does it claim to be operationally commercial. "pave the way" and "data will help determine if a ban can be lifted" are pretty clear. X59 is a tech demonstrator and hopes to assist getting regulatory approval for civil overland supersonic flight. Article fairly reflects that to my eye, but not to yours clearly. Each to their own.
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Old 15th Jan 2024, 11:38
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If it is commercial, what is it doing in the mil av thread?
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