Lower than two years after launch, NASA’s Psyche spacecraft skilled a glitch in its propulsion system that’s now jeopardizing its mission to discover a singular metallic asteroid in the primary belt. NASA engineers, ever resourceful, applied a repair for the spacecraft’s sudden drop in stress by switching to a backup line—one they hope will assist Psyche attain its namesake asteroid.
Earlier in April, the workforce of engineers with the Psyche mission detected an sudden lower in gasoline stress within the spacecraft’s propulsion system. The difficulty wanted to be resolved earlier than mid-June, in any other case it will have affected the spacecraft’s trajectory in the direction of the Psyche asteroid. After investigating, the workforce not too long ago switched from the first propellant line to a backup that NASA says is equivalent. The Psyche spacecraft stays on track to rendezvous with the asteroid in August 2029.
Psyche’s thrusters, powered by two giant photo voltaic arrays, ionize and expel xenon fuel to softly propel the spacecraft, in accordance with NASA. The spacecraft started firing its thrusters in Might 2024, however simply over a 12 months later, engineers detected a stress drop within the line that delivers xenon fuel to the thrusters—from 36 kilos per sq. inch (psi) to about 26 psi, in accordance with NASA.
After the sudden drop in stress, the workforce paused the 4 electrical thrusters as they investigated the difficulty. NASA’s engineers ran in depth checks and diagnostic work and located {that a} half inside one of many valves, which opens and closes to handle the movement of propellant, stopped functioning the best way it was designed to. In consequence, the glitchy valve was obstructing the movement of xenon to the thrusters.
The workforce then switched to the backup gasoline line and can command the spacecraft’s thrusters to renew firing by mid-June. The mission’s engineers will preserve the backup line’s valve within the open place to “guarantee propellant movement and keep away from any potential mechanical points sooner or later,” NASA wrote.
The mission is scheduled for a Mars flyby in spring 2026, utilizing the planet’s gravity to slingshot the spacecraft towards the primary asteroid belt between Mars and Jupiter. If all goes properly, the spacecraft will enter asteroid Psyche’s orbit in late July 2029 and start its mission in August of the identical 12 months.
Psyche launched in October 2023, starting a 2.2 billion-mile journey to a metal-rich asteroid positioned in the primary belt. Its journey has been a very long time within the making, and had run into points even earlier than its liftoff. The mission was initially scheduled to launch in 2022, however a problem with the spacecraft’s flight software program delayed the mission till its subsequent launch window the subsequent 12 months. The spacecraft’s flight software program controls its orientation and trajectory, in addition to its capacity to ship and obtain knowledge to Earth. Every week earlier than its unique launch date on October 5, 2023, engineers found a problem with the Psyche spacecraft’s thrusters that might have brought on it to overheat throughout its eight-year mission. In consequence, the mission’s liftoff date was delayed by one week because the workforce resolved the difficulty.
Psyche is a 140-mile-wide (226-kilometer) asteroid that could be the stripped-down core of a shattered planetesimal, one of many constructing blocks that come collectively to type a planet. If the mission manages to achieve the asteroid, it would turn into the primary to discover an asteroid of its form. We’re rooting for you, Psyche.
