LATERAL-DIRECTIONAL FLYING QUALITIES FOR POWER APPROACH.
Final rept., May 64-Sep 66,
PRINCETON UNIV N J DEPT OF AEROSPACE AND MECHANICAL SCIENCES
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Simulated carrier approaches were flown by Navy carrier pilots in a variable stability Navion airplane. The approaches were visual, in daylight, at a closure speed of 105 knots. Moderate natural turbulence and the carrier turbulence wake were simulated. Lateral-directional handling qualities data in the form of Cooper rating number and pilot commentary were obtained for variations in control sensitivity, roll damping, dihedral effect, numerator transfer function characteristics, Dutch roll damping, and magnitude of turbulence. The data are presented as iso-opinion maps of the parameters. Turbulence was found to be a factor of commanding importance in the handling qualities of a configuration. The poor handling qualities normally associated with large values of Dutch roll bank to sideslip ratio were found to be chargeable to the large value of the dihedral effect and the associated sensitivity to turbulence. Very low values of dihedral effect were objectionable because of the yawing motions excited by turbulence. Author
- Transport Aircraft