Voyager Technologies’ Griffin-1 lunar lander has finished a round of environmental testing at NASA’s Jet Propulsion Laboratory that included vibration, acoustic and thermal vacuum runs, ahead of a planned launch later in 2026 on a SpaceX Falcon Heavy. The lander is to deliver more than 1,100 pounds of cargo to Nobile Crater near the lunar South Pole, and NASA calls the Astrolab FLIP rover on board the largest commercial payload ever delivered to the Moon.
The spacecraft weighs 2,789 pounds, and testing began in July after it was trucked from Voyager Lunar Systems in Pittsburgh to JPL in the San Gabriel Mountain foothills.
Spin table, shaker and acoustic chamber at JPL
NASA’s account of the campaign lists the tests in the order they matter to a lander. Engineers first spun the spacecraft on a special table to find unexpected wobbles in its mass properties, a test a photo caption dates to July 20 in JPL’s Environmental Test Laboratory; the data supports navigation and landing. The lander then went into an anechoic chamber lined with foam spikes for electromagnetic interference and compatibility testing, which checks that the spacecraft’s own electronics do not disturb one another. The sequence ran over several weeks, with the mass-properties work in July and the acoustic test in August.
A shaker table then vibrated the vehicle in three directions at increasing force, with hundreds of sensors watching, to simulate the ride out of Earth’s atmosphere. For the acoustic test, giant horns powered by compressed nitrogen gas blasted the spacecraft with up to 153 decibels inside a sealed chamber; a photo caption dates that to Aug. 12.
Thermal vacuum in the 25-Foot Space Simulator
The thermal run took place in JPL’s 25-Foot Space Simulator, a chamber with an 85-foot ceiling. Over about two weeks the lander cycled between heat and cold under vacuum conditions, warming to 167 degrees Fahrenheit (75 degrees Celsius) and cooling to minus 148 degrees Fahrenheit (minus 100 degrees Celsius). NASA notes that the simulator is listed on the National Register of Historic Places for supporting the Ranger, Surveyor, Mariner and Voyager programs, and that later missions tested there include Perseverance and Europa Clipper. A lunar lander has to survive both the shock of the climb to orbit and the swings between sunlit and shadowed terrain, and this chamber covers the second half of that problem while the shaker and acoustic chamber cover the first. Griffin-1 now joins that roster of spacecraft whose flight hardware was exercised in the same room.
Charles Whetsel, manager of JPL’s Exploration Systems Development Office, said the laboratory was proud to provide its expertise and facilities to support what he called a new phase of commercial lunar exploration. The remark places JPL, a NASA center, in the role of test provider for a commercial lander, with Voyager as the customer and NASA as the agency buying delivery services through its CLPS program.
NASA’s page reports that the tests were completed and that the lander has returned to Voyager Lunar Systems, but it gives no pass-or-fail scorecard and no measurements beyond the test conditions, so the outcome is described only as readying the lander to survive the rigors of space exploration.
Ten demonstrations from six countries bound for Nobile Crater
Griffin-1 flies under NASA’s Commercial Lunar Payload Services initiative, part of the agency’s Moon Base effort. The Griffin-1 mission page sits in NASA’s list of CLPS deliveries. According to the test report, the lander will carry 10 science and technology demonstrations from six countries, including Astrolab’s FLIP rover, which stands for FLEX Lunar Innovation Platform, and NASA classifies it as an infrastructure-class lander. The mission page lists Mons Mouton as the landing region and a NASA instrument among the cargo, the Laser Retroreflector Array led by Dr. Xiaoli Sun of NASA’s Goddard Space Flight Center. The same page carries a Sept. 19, 2025 editor’s note that the VIPER rover, once tied to this task order, was reassigned to a Blue Origin Blue Moon MK-1 lander.
NASA says Griffin-1 will be at the forefront of efforts to establish a Moon Base. John Thornton, an executive vice president at Voyager, framed the mission in terms of what it leaves behind. “Griffin-1 is being built for a historic purpose: to deliver the infrastructure and capabilities to the Moon,” he said. The wording matters because the cargo is described as infrastructure rather than a single instrument, with 10 demonstrations from six countries sharing the lander alongside the rover.
What remains is final assembly and a launch date. The lander is back at Voyager Lunar Systems for final assembly, with launch-readiness operations next and then shipment to Cape Canaveral, so the spacecraft that was trucked from Pittsburgh to Southern California in the summer will make one more long trip before it flies. NASA says only that liftoff on Falcon Heavy is expected later this year, and the page offers no date, so the completed test campaign is the last confirmed milestone.
This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.
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