Systems and methods for ground effect ceiling limit display

Patent metadata

Field	Value
Publication number	US-9828087-B2
Application number	US-201615007326-A
Country	US
Kind code	B2
Filing date	Jan 27, 2016
Priority date	Jan 27, 2016
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

Systems and methods for displaying ground effect ceiling limit values associated with an operation of a mobile platform on a display are provided. The method includes receiving a preference for the display of the ground effect ceiling limit values, and determining a gross weight of the mobile platform. The method includes based on the preference, determining, with a processor, an air temperature associated with the operation of the mobile platform. The method also includes based on the gross weight and the air temperature, determining with the processor, an in ground effect limit value and an out of ground effect limit value. The method includes displaying the determined in ground effect limit value and the determined out of ground effect limit value on the display.

First claim

What is claimed is:

1. A method for displaying ground effect ceiling limit values associated with an operation of a mobile platform on a display, the method comprising:
a processor configured for receiving a preference to display ground effect ceiling limit values for a flight plan associated with the mobile platform;
the processor configured for determining a gross weight of the mobile platform;
based on the preference to display ground effect ceiling limit values for the flight plan,
the processor configured for determining air temperatures along the flight plan of the mobile platform;
the processor configured for determining a variation between the air temperatures along the flight plan;
the processor configured for separating the flight plan into one or more legs based on the variation between the air temperatures along the flight plan;
based on the gross weight and the air temperatures, the processor configured for determining an in ground effect limit value and an out of ground effect limit value;
the processor configured for displaying the determined in ground effect limit value and the determined out of ground effect limit value on the display,
wherein:
the processor configured for determining the air temperatures along the flight plan of the mobile platform further comprises:
the processor is configured for determining the flight plan of the mobile platform that includes a distance and a required navigational performance value;
the processor is configured for retrieving weather data associated with the flight plan; and
the processor is configured for extracting the air temperatures along the flight plan from the weather data based on the distance and the required navigational performance value; and

based on the separating of the flight plan into one or more legs, the method further comprises:
along each leg, based on the gross weight and the air temperature, the processor is configured for determining, the in ground effect limit value and the out of ground effect limit value; and
the processor is configured for determining for each leg, a lowest in ground effect limit value from the in ground effect limit values determined along the leg and a lowest out of ground effect limit value from the out of ground effect limit values determined along the leg.

2. The method of claim 1 , wherein the processor configured for receiving the preference further comprises:
the processor is configured for receiving a preference to display ground effect ceiling limit values for a current position of the mobile platform.

3. The method of claim 2 , wherein based on the preference to display ground effect ceiling limit values for the current position, the processor configured for determining the air temperature associated with the operation of the mobile platform further comprises:
the processor is configured for determining the current position of the mobile platform based on global positioning system data;
the processor is configured for retrieving weather data associated with the current position; and
the processor is configured for extracting the air temperature associated with the current position from the weather data.

4. The method of claim 1 , wherein the processor configured for receiving the preference further comprises:
the processor is configured for receiving the preference from an input device associated with the mobile platform.

5. The method of claim 1 , further comprising:
the processor is configured for outputting the determined lowest in ground effect limit value and the determined lowest out of ground effect limit value for display on the display based on a position of the mobile platform along the flight plan.

6. A system for displaying ground effect ceiling limit values associated with an operation of a mobile platform on a display, the system comprising:
a source of a preference for the display of the ground effect ceiling limit values for a flight plan associated with the mobile platform on the display;
a first control module having a processor configured to:
determine a gross weight of the mobile platform; and
based on the preference, determine air temperatures along the flight plan of the mobile platform, the air temperatures determined based on a distance and a required navigational performance value of the flight plan and weather data associated with the flight plan, with the air temperatures along the flight plan extracted from the weather data based on the distance and the required navigational performance value;
determine a variation between the air temperatures along the flight plan;
separate the flight plan into one or more legs based on the variation between the air temperatures along the flight plan; and

a second control module having a processor configured to:
determine an in ground effect limit value and an out of ground effect limit value based on the gross weight and the air temperatures; and
output the determined in ground effect limit value and the determined out of ground effect limit value for display on the display,
wherein along each leg, based on the gross weight and the air temperatures, the processor is configured to determine the in ground effect limit value and the out of ground effect limit value and to determine for each leg, a lowest in ground effect limit value from the in ground effect limit values determined along the leg and a lowest out of ground effect limit value from the out of ground effect limit values determined along the leg.

7. The system of claim 6 , further comprising:
an input device, and the source of the preference comprises input received by the input device.

8. The system of claim 6 , wherein the processor of the second control module is configured to output the determined in ground effect limit value and the determined out of ground effect limit value such that the determined in ground effect limit value and the determined out of ground effect limit value are superimposed onto a primary flight display displayed on the display.

9. The system of claim 8 , wherein the determined in ground effect limit value is illustrated with a first bar icon having a first color and the determined out of ground effect limit value is illustrated with a second bar icon having a second color, the first color different from the second color, and the first bar icon and the second bar icon superimposed on an altitude indicator on the primary flight display.

10. The system of claim 6 , wherein the processor of the second control module is configured to output the determined in ground effect limit value and the determined out of ground effect limit value such that the determined in ground effect limit value and the determined out of ground effect limit value are superimposed onto a vertical situational flight display displayed on the display.

11. The system of claim 10 , wherein the determined in ground effect limit value and the determined out of ground effect limit value are superimposed on an altitude indicator on the vertical situational flight display.

12. The system of claim 6 , wherein the processor of the first control module is configured to determine the gross weight of the mobile platform based on fuel data received from a source of fuel information, cargo data associated with a cargo load onboard the mobile platform and a predefined initial weight of the mobile platform.

13. A method for displaying ground effect ceiling limit values associated with an operation of a rotorcraft on a display, the method comprising:
a processor configured for determining a gross weight of the rotorcraft based on fuel data received from a source of fuel information and a predefined initia

Assignees

• Honeywell Int Inc

Inventors

• Pr Sriram
• Reddy Pushpa Basavapura Veerabhadra
• Veerabhadraiah Shashidhara
• Samuthirapandian Subash
• Balasa Swetha

Classifications

• B64D43/00

  Arrangements or adaptations of instruments · CPC title

• G01D7/06

  Luminous indications projected on a common screen · CPC title

• G01C23/00

  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 · CPC title

• G01K13/028

  for use in total air temperature [TAT] probes · CPC title

• G01C5/005 Primary

  altimeters for aircraft (G01C5/02, G01C5/06 take precedence) · CPC title