초록 ▼

Upon landing approach to a runway, glideslope and altitude information is processed to produce an indication of ground distance to the touchdown point. Actual aircraft position is then determined by integrating the aircraft\s ground speed. A display of distance from the beginning and end of the runw

Upon landing approach to a runway, glideslope and altitude information is processed to produce an indication of ground distance to the touchdown point. Actual aircraft position is then determined by integrating the aircraft\s ground speed. A display of distance from the beginning and end of the runway is provided. An alert is produced if the aircraft approaches the end of the runway at excessive speed. Further, the system may be coupled to the aircraft\s autobrake system to automatically control the rate of deceleration.

대표청구항 ▼

Apparatus for determining the position of an airplane, having a groundspeed indicator, with respect to a runway comprising: means for determining the glidescope angle ffo of the airplane from the beginning of the runway during the instance of the airplane being at the altitude A from the equation So

Apparatus for determining the position of an airplane, having a groundspeed indicator, with respect to a runway comprising: means for determining the glidescope angle ffo of the airplane from the beginning of the runway during the instance of the airplane being at the altitude A from the equation So=d-D, where D is the predetermined distance from the beginning of the runway to the intersection of the glideslope with the runway; integrating airplane ground speed to produce an indication of airplane relative position; and updating said distance So by said relative position to produce a continuous indication S of the distance of the airplane from the beginning of the runway.