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Free-flight investigation of the stability and control characteristics of a STOL model with an externally blown jet flapThe stability and control characteristics of a four-engine turbofan STOL transport model having an externally blown jet flap have been investigated by means of the flying-model technique in the Langley full-scale tunnel. The flight characteristics of the model were investigated under conditions of symmetric and asymmetric (one engine inoperative) thrust at lift coefficients up to 9.5 and 5.5, respectively. Static characteristics were studied by conventional power-on force tests over the flight-test angle-of-attack range including the stall. In addition to these tests, dynamic longitudinal and lateral stability calculations were performed for comparison with the flight-test results and for use in correlating the model results with STOL handling-qualities criteria.
Document ID
19740013536
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Technical Note (TN)
Authors
Parlett, L. P. (NASA Langley Research Center Hampton, VA, United States)
Emerling, S. J. (NASA Langley Research Center Hampton, VA, United States)
Phelps, A. E., III (Army Air Mobility R and D Lab. Hampton, Va., United States)
Date Acquired
September 3, 2013
Publication Date
April 1, 1974
Subject Category
Aircraft
Report/Patent Number
NASA-TN-D-7411
L-9148
Accession Number
74N21649
Funding Number(s)
PROJECT: RTOP 760-61-02-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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