NASA has pushed the speeds of a next-generation Mars helicopter rotor blades beyond Mach 1. The tremendous speeds are necessary to generate lift in the tenuous atmosphere of Mars. NASA has pushed the speeds of a next-generation Mars helicopter rotor blades beyond Mach 1. The tremendous speeds are necessary to generate lift in the tenuous atmosphere of Mars. New Delhi: Engineers at NASA’s Jet Propulsion Laboratory (JPL) in Sout... [1992 chars]
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