Multi-ITB-Turbo Fan for Advanced Propulsion and Power Concepts for Large Size Class Unmanned Aerial Systems (UAS), Equipped with Variable Turbine

Period of Performance: 10/23/2014 - 01/20/2017


Phase 2 SBIR

Recipient Firm

Spytek Aerospace Corp.
450 Frontier Way, Unit D
Bensenville, IL 60106
Principal Investigator


ABSTRACT: With the roll of UAV s becoming more complex, and their use more widespread, tactical requirements for performance, reliability, maintainability, supportability, and most recently low cost, have created the need for an advanced cycle propulsion system. Such an engine, must address the conflicting requirements, of large amounts of electrical power generation, while producing substantial increases in power-on-demand at both low and high altitudes. Addressing these requirements, Spytek was able to build and initially test its FI304 500lbt, advanced cycle, turbo-fan engine, with 2 ITB s in Phase 1. Leveraging substantial IRAD assets, Spytek was able to complete the integration of a 2 ITB engine, complete with variable turbines and flow control, in the scope of the Phase 1. Cycle analysis indicates a 600% increase in electrical power generation capability and a 25% in thrust available to altitudes of 60000ft, over similar non-ITB engines. In Phase 2, Spytek will continue characterization tests of the FI304, implement modifications to match cycle predictions and lower SFC, while repackaging fuel, oil, and systems control elements to make the engine flight demonstration ready in Phase 3. Electrical power generation equipment including the generator will be evaluated and run on the engine in Phase 2. BENEFIT: Benefits of the FI304 Dual ITB engine include a 600% increase in electrical power generation, and a 25% thrust increase over comparable engines, all as power on demand. Thrust and electrical power generation are not relative and can be produced to a large degree independently. Performance increases include operations up to 60000ft, due to lower fan lapse, and a high degree of electrical power generation capability available at altitude.