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Summary and analysis of performance and stability characteristics of the refan JT8D-109 engineThe refan JT8D-109 performance and stability characteristics are reported as determined from sea level testing, altitude testing, and DC-9 flight testing. The test results are summarized as follows: (1) TSFC at SLS achieved design goal of 12.66 percent reduction. (2) TSFC at altitude average cruise power 0.5 percent higher than design goal, (3) TSFC at altitude maximum cruise power 1.7-3.7 percent higher than design goal, (4) ground starting consistent with JT8D-9 base engine, (5) successful flight starts without starter assist, (6) transient surge margin equivalent to JT8D-9, (7) stable engine operation with inlet distortion, and (8) stable engine operation during snap acceleration and deceleration. A flight idle setting is required for acceptable aborted-landing go-around acceleration time due to increase in low-rotor moment of inertia, and a performance improvement program should be conducted as part of any future certification program.
Document ID
19750022994
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Sanberg, K. G. (Pratt and Whitney Aircraft East Hartford, CT, United States)
Mogielnicki, R. M. (Pratt and Whitney Aircraft East Hartford, CT, United States)
Davis, J. C. (Pratt and Whitney Aircraft East Hartford, CT, United States)
Scaramella, V. M. (Pratt and Whitney Aircraft East Hartford, CT, United States)
Date Acquired
September 3, 2013
Publication Date
September 1, 1975
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
PWA-5284
NASA-CR-134874
Accession Number
75N31067
Funding Number(s)
CONTRACT_GRANT: NAS3-17840
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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