Great Horned Owl (GHO)

Program Manager

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Program Information

IARPA Day Poster

The Intelligence Surveillance and Reconnaissance (ISR) role for UAVs is dependent upon the ability of the UAV to do its mission without the adversary being able to counter it. For many such ISR applications, the acoustic signature of the UAV alerts the adversary to the UAVs presence and can interfere with the mission. Battery powered UAVs are very quiet but lack endurance and payload capability. Better, more efficient, quiet power sources and propulsion techniques are needed to engineer the next generation UAVs for ISR mission applications.

The Great Horned Owl (GHO) Program seeks to develop technologies that significantly extend the operational endurance and payload capabilities of ISR UAVs. The anticipated innovation in Phase 1 of the program is a propulsion system that will quietly generate electrical power from liquid hydrocarbon fuel (specifically gasoline or diesel) and enable purely electrically driven quiet flight. The specific propulsion subsystems that GHO's Phase 1 will focus on are: (1) fuel-to-electricity devices using an advanced combustion engine directly coupled to alternator/generator concepts and (2) electricity-to-thrust devices utilizing innovative electric motor driven propulsor systems.

Research Area(s)

  • Low acoustic aircraft propulsion
  • Low acoustic power generators
  • Novel access
  • Sensors & perception

Related Publications

To access GHO program-related publications, please enter the following into a Google Scholar search query: "FA8650-12-C-7239 OR FA8650-12-C-7241 OR FA8650-12-C-7240 OR FA8650-12-C-7245 OR FA8650-12-C-7247 OR FA8650-12-C-7243 OR FA8650-12-C-7242 OR FA8650-12-C-7246 OR FA8650-12-C-7244"

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