Method, apparatus and computer program product for unstabilized approach alerting

• US 20060195235A1
• Filed: 04/11/2006
• Published: 08/31/2006
• Est. Priority Date: 02/02/2001
• Status: Active Grant

• Current Assignee: Scott Gremmert, Steven C. Johnson, Yasuo Ishihara
• Original Assignee: Scott Gremmert, Steven C. Johnson, Yasuo Ishihara
• Inventors: Johnson, Steven C., Ishihara, Yasuo, Gremmert, Scott
• Granted Patent: US 7,436,323 B2
• Time in Patent Office: Days
• US Class Current: 701/16
• CPC Class Codes: G01C 23/00 Combined instruments indicating more than one navigational value, e.g. for aircraft; Combined measuring devices for measuring two or more variables of movement, e.g. distance, speed or acceleration

Abstract

A method and apparatus for assisting the pilot of an aircraft in making a go-around decision. Various aircraft parameters are monitored during the approach to land and a risk level assessed. When the risk level exceeds a specified threshold, an alert is provided.

Claims

1. A method for alerting the pilot of an aircraft to a potential go-around condition comprising:

monitoring a plurality of parameters indicative of an unstabilized approach;

assigning a risk of go-around value to each of said parameters;

summing the assigned risk values; and

asserting an alert signal when said summation exceeds a predetermined threshold amount,

wherein the plurality of parameters includes at least three of tailwind velocity, flight path angle, lateral velocity, crosswind velocity, one or more runway characteristic, and weather information.

2. The method of claim 1, wherein the plurality of parameters includes a change in a speed of the aircraft.

3. The method of claim 1, wherein monitoring a plurality of parameters includes monitoring a runway wind condition.

4. The method of claim 1, wherein the plurality of parameters includes a position of the aircraft.

5. The method of claim 1, wherein the plurality of parameters includes a track of the aircraft.

6. The method of claim 1, wherein said step of asserting an alert signal comprises commanding an autopilot go-around maneuver.

7. The method of claim 1, wherein the plurality of parameters includes braking information.

8. An apparatus for alerting the pilot of an aircraft to a potential go-around condition comprising:

an input device coupled to receive a plurality of parameters;

an output device; and

a signal processing device, coupled to the input and the output devices, the signal processing device comprising;

a first component for monitoring a plurality of parameters;

a second component for assigning a risk of go-around value to each of said parameters;

a third component for summing the assigned risk values;

a fourth component for generating an alert signal when said summed values exceed a predetermined threshold amount; and

a fifth component for sending the generated alert signal to the output device for presentation,

wherein the plurality of parameters includes at least three of tailwind velocity, flight path angle, lateral velocity, crosswind velocity, one or more runway characteristic, and weather information.

9. The apparatus of claim 8, wherein the plurality of parameters includes a change in speed of the aircraft.

10. The apparatus of claim 8, wherein the first component includes monitoring a runway wind condition.

11. The apparatus of claim 8, wherein the plurality of parameters includes a position of the aircraft.

12. The apparatus of claim 8, wherein the plurality of parameters includes a track of the aircraft.

13. The apparatus of claim 8, wherein the fourth component comprises commanding an autopilot go-around maneuver.

14. The apparatus of claim 8, wherein the plurality of parameters includes braking information.