11. The "'Lenoir cycle "'is an idealized thermodynamic cycle often used to model a pulse jet engine. 12. Pulse jet engines are similar in many ways to turbojets, but have almost no moving parts.13. This is known as pulse jet cleaning. 14. Use of a turbine is not absolutely necessary : other designs include the pulse jet and ramjet. 15. It used pulse jets to power a rotor that rotated about the fuselage axis behind the cockpit. 16. The pulse jets produced no torque, and the tiny, belt-driven tail rotor was used only to improve directional control. 17. The aircraft was to be powered by a pulse jet , the same engine used in the V-1 flying bomb. 18. :: : That's a valveless pulse jet , apparently; I wouldn't expect a ramjet to take off from a standing start. 19. Some pulse jet designs used a tuned resonant cavity to provide the valving action through the airflow in the system. 20. In 2009, he received attention for serving as a test pilot on the maiden voyage of an experimental pulse jet -powered carousel.
