| 摘要 |
<p>An aircraft ground proximity warning system which has three separate warnings: (1) a ''SINK RATE'' advisory warning (28, 38) is generated for combinations of lesser descent rates and greater altitudes; (2) a ''PULL UP'' warning (54) is generated for higher descent rates at lower radio altitudes; and (3) after a predetermined time (60) after the ''SINK RATE'' warning is generated, a ''TERRAIN'' warning (58, 68) is generated to indicate to the pilot of the aircraft that an excessive sink rate condition exists and the aircraft is flying over undulating or montainous terrain.</p> |
