Pulse Ejector Thrust Augmentor

Advantages

• The pulse jet engine's ability to be almost instantly throttled, with spoolup/spooldown time from minimum to max thrust and vice versa of around of 1–1,5 seconds, and startup and shutdown times of less than five seconds, would be advantageous in a vertical take-off and landing aircraft, where quick response to control input is useful.
• The ability to provide upward thrust and thus decouple vertical and axial movement of the aircraft.
• Valveless pulse jet engines are insensitive to sand and small debris.
• The engine's thrust augmenters can be incorporated as load bearing structures in the aircraft's superstructure, thus reducing overall weight.
• The design features no moving parts, which the creators claim increases reliability compared to conventional engines with moving parts.
• Multiple engines can be assembled into an :wikt:array|array, allowing scalability to heavy-lifting applications.
• Arranging the engines in an array allows for distributed, highly redundant thrust, thus increasing reliability.

  Disadvantages

• Pulse jet engines are notorious for being loud. Owners of large engines have reported receiving noise complaints from people who were shielded from the "test site" by 7 km of hilly terrain covered by a dense forest.