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Space
Space
Science
Josh Dinner

The Mars helicopter Ingenuity is an amazing success. NASA's already testing tech for the next generation (video)

A set of industrial beams provide a frame to hold dual rotor blades for a spin test in a black enclosed chamber.

NASA recently released a video showing a pair of Mars helicopter rotor blades getting tested at the agency’s Jet Propulsion Laboratory (JPL). The test occurred on Sept. 15, just one day before NASA’s Ingenuity helicopter made a record-breaking flight on the Red Planet.

With Ingenuity’s major success, NASA is planning to incorporate helicopter-like drones into future Mars missions too, built with designs more robust than their predecessor — which has completed 66 flights, and counting. The new dual rotor system recently tested at JPL features two carbon-fiber blades measuring more than 50 inches (1.3 meters) in diameter. That's nearly 4 inches (10 centimeters) longer than Ingenuity’s are. 

This screenshot from a NASA video shows next-generation helicopter blades for Mars in a test on Earth. (Image credit: NASA/JPL-Caltech)

The rotors were tested inside JPL’s  25-Foot Space Simulator, a vacuum chamber used by NASA engineers to expose spacecraft systems to conditions similar to those they will face during a mission. The stainless-steel compartment spans 85 feet (26 meters) in height, and can simulate the conditions of extreme temperatures and solar radiation found in the vacuum of interplanetary space. 

Related: Mars helicopter flies back-to-back to prep for 'solar conjunction' (video)

Over the course of three weeks, the dual rotors were spun at exponentially greater speeds to test their durability. A NASA video from inside the space simulation chamber shows a Sept. 15 test during which the blades are spun at Mach 0.95, which is nearly the speed of sound. 

Coincidentally, Ingenuity completed a record-breaking flight just the next day. On Sept. 16, the Mars helicopter flew its 59th flight across the Martian surface, reaching an altitude of 66 feet (20 meters) — at the time, this marked its highest flight yet. 

That record was broken during an Oct. 5 flight, however, during which Ingenuity flew to a height of 79 feet (24 meters). 

Ingenuity landed on Mars with NASA’s Perseverance rover in Feb. 2021, and was originally intended to only fly five times in a proof-of-concept demonstration for this sort of flight technology. Now, on an extended mission, the helicopter has spent nearly 2 cumulative hours in the Martian air, and has flown across a total of 9 miles. 

The Sept. 16 flight remains a significant milestone, and is notable for its occurrence alongside the terrestrial testing of its successor spacecraft components only the day before. 

Ingenuity is a test vehicle itself, which has far surpassed its initial life expectancy — that NASA can execute near-simultaneous interplanetary flight tests of hardware in both simulated and off-world environments speaks immensely to humanity’s progress in space exploration as a whole. 

It also undoubtedly highlights the space agency’s determination to continue innovation into the final frontier. 

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