Engenheiros da Nasa alcançam avanço com rotores supersônicos para helicópteros em Marte

Engenheiros do Laboratório de Propulsão a Jato da Nasa testaram com sucesso pás de rotor maiores que giram mais rápido que a velocidade do som sem se fragmentar. O marco, anunciado na quinta-feira, aumenta a capacidade de sustentação em 30 por cento para futuras missões a Marte.

Os testes ocorreram em uma câmara que simulou a fina atmosfera de Marte, onde as pontas dos rotores atingiram Mach 1.08. Engenheiros do JPL e da AeroVironment utilizaram projetos de três e duas pás, sendo que este último corresponde à configuração planejada para a missão SkyFall. Um ventilador dentro da câmara simulou ventos contrários à medida que as velocidades aumentavam, e a equipe observou os resultados de uma sala de controle próxima.

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