Economic evaluation of flying-qualities design criteria for a transport configured with relaxed static stability
Steven M. Sliwa, United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch, Langley Research Center
National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1980 - Technology & Engineering - 27 pages
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airfoil aspect ratio baseline configuration block hour center of gravity configured with relaxed constraint functions control system cost per block cost with respect damping ratios data base design constants design of transport direct operating cost dollars double amplitude downwash drag drag coefficient estimated evaluated feedback gain flight control flying-qualities criteria flying-qualities design criteria fuel cost fuselage length geometry handling qualities horizontal-tail area impact independent design variables iteration landing field length landing gear Langley Research Center lift coefficient longitudinal margina maximum meters modified direct operating nearly 1 percent Nonlinear programming OPDOT percent savings performance index Phugoid reduction references 17 relaxed static stability savings in direct SAVINGS IN MDOC savings in modified short-period frequency shown in figure specifying stability and control static margin steering traction Supercritical airfoil take-off weight thrust time-to-double transports configured trimmed U.S. dollars unaugmented flying qualities unaugmented transports unstable airplanes utilized