Nasa engineers achieve supersonic rotor breakthrough for mars helicopters

中文

Engineers at NASA's Jet Propulsion Laboratory have successfully tested larger rotor blades that spin faster than the speed of sound without breaking apart. The milestone, announced on Thursday, boosts lift capability by 30 percent for future Mars missions.

The tests took place in a chamber that simulated the thin atmosphere of Mars, where rotor tips reached Mach 1.08. Engineers at JPL and AeroVironment used both three-bladed and two-bladed designs, with the latter matching the configuration planned for the SkyFall mission. A fan inside the chamber simulated headwinds as speeds increased, and the team observed results from a nearby control room.

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