According to Merriam-Webster, a pulse-jet engine is “designed to ... A pulse-jet boat painted to look like a poison dart frog. A Jet Ski with two pulse-jet engines that he’s planning to ...

An F-35B fighter jet uses a runway sloped like a ski jump to take off quickly. On runways that are too short, these ski jumps help the plane get off the ground — or aircraft carrier. More from ...

Upon the patent being released, however, Jacobsen submitted his idea to Kawasaki, the result of which was the introduction of the first Jet Ski. This watercraft was nimble and agile, and boasted a ...