Series Flow Tandem Fan: A High-Speed V/STOL Propulsion Concept 841496

A promising high speed V/STOL propulsion concept, the series flow tandem fan (SFTF), was analyzed by Vought for a single engine airplane configuration. The SFTF propulsion system was evaluated for size, performance and technology issues by engine companies under contract. Under contract to the Naval Air Propulsion Center (NAPC), Vought assessed engine contractor definition of baseline and alternate SFTF propulsion systems when installed in a representative aircraft concept. This paper will summarize the results of these studies and show the impact on VTO thrust requirements, exhaust temperature and airplane performance. Further, the effect of STOVL criteria on vehicle sizing and engine design is being studied under a follow-on contract.


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