NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop a mobile launcher at Launch Pad 39B, Wednesday, Aug. 17, 2022, after being rolled out to the launch pad at NASA’s Kennedy Space Center in Florida. NASA’s Artemis I mission is the first integrated test of the agency’s deep space exploration systems: the Orion spacecraft, SLS rocket, and supporting ground systems. Launch of the uncrewed flight test is targeted for no earlier than Aug. 29. Photo Credit: (NASA/Joel Kowsky)
Three Points: Artemis scrub, Beta’s battery fire, ATC’s eVTOL capacity
‘Incandescently expensive’ SLS scrubs first attempt at lunar test flight
The Space Launch System, NASA’s largest-ever rocket for human spaceflight beyond Earth orbit, made an unsuccessful attempt to get the uncrewed Orion capsule and the Artemis 1 mission off the ground on August 29. The first launch window of the incredibly complex test flight was stymied by a bleed stage that wasn’t able to sufficiently cool the core stage’s number three RS-25 main engine aboard the new SLS rocket. That finicky main engine is repurposed for SLS and flew on six Space Shuttle flights going all the way back to December 2006. NASA will try again no earlier than September 2.
Perhaps one of SpaceX’s biggest contributions to a shift in the public expectation around space flight is that rockets are now reusable. Many news packages on SLS noted that the rocket isn’t reusable, once the norm in spaceflight that only shifted for the first time in 2015. For the single-use SLS, NASA’s RS-25s are now expendable motors.
Beta confirmed that early on the morning of Friday, August 26, the company had a fire in a single container across the parking lot from its research and development headquarters in South Burlington, Vermont. Beta said that within the container was a reassembled battery pack awaiting end of line testing. This pack had not completed testing and as a result was not approved for flight.
Today’s airspace can handle eVTOLs — but not too many of them
A study conducted by NASA and Joby Aviation indicates that eVTOL aircraft will be able to launch initial, low-volume urban air mobility operations in U.S. airspace as it exists today. However, such operations will be difficult to scale without changes to air traffic management, especially around the busy airports that will be among their primary sources of passenger demand.
The research is the latest in a series of studies launched by NASA in partnership with Uber Elevate, which wasacquired by Joby in December 2020. Using performance specifications for Joby’s four-passenger eVTOL aircraft, it analyzes five specific use cases in the Dallas metropolitan area, which Uber had identified as one of its Elevate launch cities before handing off its flying taxi project.
The use cases range from a simple flight across the northeast fringe of the metro area — which does not require the pilot to speak to air traffic control — to more complex missions into Dallas-Fort Worth International Airport and its surrounding Class B airspace. The researchers defined procedural steps for each use case and examined the implications for controller and pilot workload, traffic and wake separation, and more.
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