FLIGHT EVALUATION OF WIDE-ANGLE, OVERLAPPING MONOCULARS FOR PROVIDING PILOT'S FIELD OF VISION

摘要

A qualitative evaluation was made of the effectiveness of wide-angle, overlapping monoculars as the sole source of outside visual reference during takeoffs, aerial maneuvers, visual navigation, and approaches and landings in a light observation aircraft. The evaluation was made during the day and at night and in air conditions which varied from no turbulence to severe turbulence.nThe monoculars provided pilot visibility that was adequate for gross control of angle of pitch and angle of sideslip and precise control of bank angle. When used in conjunction with an altimeter and airspeed indicator, the optics gave the pilot enough information with which to satisfactorily perform takeoffs, visual navigation, mild aerial maneuvers, and power-off approaches through the landing flare. The system was as suitable for outside visual refer¬ence during night operation as during the day and was satisfactory for flight in light and moderate turbulence.