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usafphantom2 · 6 months

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NASA postpones X-59 flight tests to 2024

Fernando Valduga By Fernando Valduga 10/20/2023 - 10:01am in Technology

NASA postponed the first flight of the X-59 low-noise supersonic demonstrator to 2024, after a series of subsystem problems found during verification tests at Lockheed Martin's Skunk Works facility in Palmdale, California, later this summer, proved more difficult to solve than expected.

"We want to fly as early as possible, but we want to fly safely," says the agency, which - together with Lockheed Martin - has solved a variety of problems of abandonment and redundancy of security systems in various subsystems.

First reported in August, the problems are related to the flight control computer and the hydraulic system and were found during structural coupling tests in Palmdale. The coupling tests were designed to evaluate the interaction between the fuselage and the flight control system, and to ensure the absence of any aeroelastic and aeroservoelastic instabilities.

Developed by Lockheed for NASA's Quiet Supersonic Technology (QueSST) program, the X-59 almost 30 meters long was originally supposed to fly in 2021. However, the latest system-related delays add to a series of delays that included workforce hiring issues, the pandemic and technical challenges related to cabling and the integration of final systems. Until recently, the agency still expected to make the first flight of the X-59 by the end of the year, with a transition soon after to NASA's neighboring Armstrong Flight Research Center at Edwards Air Base for subsequent expansion of the envelope.

Commenting on the delay, NASA states: “This unique experimental aircraft requires unique and complex engineering, and its team encountered several technical challenges last year. The X-59 is currently in the process of integrated testing, which must be completed to help ensure safe and successful flights. NASA plans to release a more specific schedule for the first flight when the flight readiness review is completed, after integrated tests."

The X-59 is designed to collect community response data on the public acceptability of reduced sonic rons. The data will be used by U.S. and international authorities to determine whether a growth standard can be established that allows the release of the current ban on civilian supersonic flights over land, which has been in force since the 1970s.

However, to achieve low-intensity sonic sonic roning at the projected speed of the X-59 of Mach 1.4, the aircraft is configured with a well-sloping hang glider and swinging extended nose section that represents more than one third of the length of the vehicle. Specifically designed with rigidity for high-speed testing, rather than resistance for payload capacity, the long and slender format therefore presents significant aeroelastic challenges.

Source: Aviation Week

Tags: Lockheed MartinNASAQueSST - Quiet Supersonic TechnologyTechnologysupersonic flightX-59

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Fernando Valduga

Aviation photographer and pilot since 1992, has participated in several events and air operations, such as Cruzex, AirVenture, Dayton Airshow and FIDAE. He has work published in specialized aviation magazines in Brazil and abroad. Uses Canon equipment during his photographic work in the world of aviation.

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ramblebamble · 2 years

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2022, August 19, 6:02am.

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2022, August 19, 11:32pm.

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I clean the trash bin.

2022, August 19, 11:58pm.

I read my first and last letter to her. She will be sent to the trash bin, she will be gone after 30 days. Do you want to do that?

2022, August 20, 00:00am.

She will be deleted forever. Do you want to do that?

2022, August 20, 00:01am.

I am 15 and a half years old. Today I'll redraw an old comic I made a year ago to see my improvement.

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joy100744 · 2 years

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