If you've ever looked closely at a jet engine fan on a commercial airplane, you'll have likely ... Subscribe to our free newsletter for the latest headlines, expert guides, and how-to tips ...

pulsating Trembita engine. Its task is to destroy objects and exhaust the enemy’s anti-aircraft ... conceptual image of a Trembita and its components including ... [+] the Pulse Jet engine.

Many readers will be familiar with the Dyson Air Multiplier, an ingenious bladeless fan design in which a compressor pushes jets of air from the inside edge of a large ring. This fast-moving air ...