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Full Scale Technology Demonstration of a Modern Counterrotating Unducted Fan Engine Concept. Design ReportThe Unducted Fan engine (UDF trademark) concept is based on an ungeared, counterrotating, unducted, ultra-high-bypass turbofan configuration. This engine is being developed to provide a high thrust-to-weight ratio power plant with exceptional fuel efficiency for subsonic aircraft application. This report covers the design methodology and details for the major components of this engine. The design intent of the engine is to efficiently produce 25,000 pounds of static thrust while meeting life and stress requirements. The engine is required to operate at Mach numbers of 0.8 or above.
Document ID
19900000732
Document Type
Contractor Report (CR)
Date Acquired
September 6, 2013
Publication Date
December 1, 1987
Subject Category
AIRCRAFT PROPULSION AND POWER
Report/Patent Number
NAS 1.26:180867
NASA-CR-180867
Funding Number(s)
PROJECT: RTOP 535-03-01
CONTRACT_GRANT: NAS3-24210
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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