When sitting in a landing plane, you might have noticed a backward force, pushing against the plane and slowing it down. What ...

Of course this was an expensive proposition; a motor with 12 pounds of thrust cost somewhere in the range of four figures. Printing a rocket engine has a few advantages over traditional ...

generating thrust. However, the Japan Aerospace Exploration Agency (JAXA) has recently completed a successful test of a different type of rocket, known as a rotating detonation engine. The engine ...