A novel cobalt (Co)- and nickel (Ni)-based high-entropy superalloy (CoNi-HESA) capable of withstanding higher operating temperatures could prove a step toward more powerful and fuel-efficient aircraft ...

Bob Maddox’s stage name, Crazy Rocketman, is a misnomer. Maddox doesn’t build rockets. He builds pulse-jet engines. There’s a difference. As for the crazy part—that may be true. Maddox is the world’s ...

Rim-driven thrusters turn the normal propeller-motor arrangement inside out; rather than mounting the motor at the center of the propeller, they use a large hollow motor, with the blades attached to ...