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Home Space Flight

Regardless of engine malfunction, powered-down Japanese moon lander achieves main objectives – Spaceflight Now

January 26, 2024
in Space Flight
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Regardless of engine malfunction, powered-down Japanese moon lander achieves main objectives – Spaceflight Now
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A digital camera aboard a small micro rover deployed from Japan’s SLIM lunar lander captured a picture of the probe resting on one facet a number of ft away after an engine malfunction in the course of the closing levels of descent Jan. 19. Picture: JAXA.

Certainly one of two engines powering a Japanese moon lander throughout its descent to the floor Jan. 19 suffered a malfunction of some type simply 160 ft above the lunar floor that sharply diminished its energy, the Japanese area company mentioned Thursday.

The spacecraft touched down at a protected, lower-than-expected velocity, but it surely was shifting too quick sideways due to the unbalanced thrust. Consequently, the otherwise-healthy probe apparently tipped over on touchdown, leaving its photo voltaic cells, hooked up to the higher floor of the craft, pointed to the west, instantly away from the solar.

Unable to generate electrical energy, the spacecraft had solely the restricted energy accessible in its on-board battery.

After downloading saved photos and amassing as a lot science and engineering information as attainable, flight controllers despatched instructions to close the probe down 37 minutes after touchdown, earlier than the battery was utterly drained. That ought to enhance the possibilities it’s going to finally “get up” because the 14-day lunar day-night cycle proceeds and the angle to the solar adjustments.

Whereas the engine downside curtailed post-landing operations, officers with the Japan Aerospace Exploration Company — JAXA — mentioned the Good Lander for Investigating (the) Moon, or SLIM, spacecraft efficiently demonstrated high-precision touchdown expertise, the first aim of the mission.

Earlier than the engine malfunction, the craft was descending towards a landing inside 10 to 13 ft of the deliberate goal, periodically snapping footage of the floor, evaluating them to on-board maps and making changes as required.

With the engine downside, the probe ended up touchdown about 180 ft from the goal, nonetheless nicely inside the 100-meter (328-foot) aim.

“The pinpoint touchdown was achieved (with an) accuracy of lower than 10 meters, and possibly about 3 to 4 meters (10 to 13 ft),” an official mentioned at a JAXA information convention early Thursday. “We imagine that this can be a nice achievement for future exploration.”

The probe additionally efficiently deployed two small micro rovers in the course of the closing moments of the descent, one designed to hop concerning the floor and the opposite designed to roll. Each appeared purposeful and one beamed again a picture of the SLIM that confirmed the spacecraft resting on one facet a number of ft away.

A navigation digital camera aboard SLIM additionally labored as deliberate, capturing photos in the course of the descent. After touchdown, 227 of 233 deliberate photos have been beamed again to Earth and assembled right into a mosaic displaying the rocky terrain the place SLIM touched down.

“We’re pondering that the photo voltaic panels, going through the west, will (finally) obtain daylight,” a JAXA official mentioned in translated remarks. “There’s a chance that the facility era might be restored and the exploration operation will resume.”

Regardless of the engine malfunction, SLIM landed on the moon intact and was in a position to ship again science and engineering information earlier than it was shut down. As such, Japan grew to become solely the fifth nation to efficiently land on the moon after the US, Russia, China and India.

Three privately-financed robotic moon touchdown missions have been launched as business ventures, however all three failed.

Most just lately, the Peregrine lander, constructed by Pittsburgh-based Astrobotic, was stranded in a extremely elliptical Earth orbit after a valve malfunction brought on a propellant tank to rupture shortly after launch Jan. 8. Firm flight controllers directed the spacecraft to fall again into Earth’s ambiance the place it burned up on Jan. 18.

A second American firm, Houston-based Intuitive Machines, plans to launch its personal business moon lander in mid February.



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