Apparatus, method and system relating to aircraft systems
AssigneeUniversity of Bath
InventorsDavid Cleaver, Jonathan Du Bois, Pejman Iravani
Life of this patent
Estimating the term…
Abstract
A method for controlling flight of an aircraft system comprises deriving a liability map using mapping data related to one or more ground hazard categories, wherein each ground hazard category is associated with a type of hazard on a ground surface. The liability map comprises a plurality of risk liability values (L1 and/or L2) associated with the one or more ground hazard categories. The liability map is used to control one or more parameters for controlling flight of the aircraft system.
Claims13
A method for controlling flight of an aircraft system, the method comprising:
- deriving a two-dimensional liability map using mapping data related to one or more ground hazard categories, wherein each ground hazard category is associated with a type of hazard on a ground surface, wherein the two-dimensional liability map comprises a plurality of risk liability values (L1) associated with the one or more ground hazard categories;
- and
- using the liability map to control one or more parameters for controlling flight of the aircraft system, wherein deriving the two-dimensional liability map comprises:
- dividing a ground surface region of interest into a discretized two-dimensional grid;
- for each element of the grid, deriving an amount of area of that element that falls within a relevant ground hazard category;
- for each ground hazard category, estimating a consequence value (CY) based on a size of the aircraft system;
- and
- for each element of the grid, estimating a first risk liability value (L1) based on the derived amount of area of the element and the estimated consequence value, wherein estimating a first risk liability value (L1) comprises:
- L1=Σarea ratio for a particular ground hazard*consequence value(CY).
A flight control system for controlling an aircraft system, and comprising a processor and a memory, said memory containing instructions executable by said processor, whereby said flight control system is operative to:
- derive a two-dimensional liability map using mapping data related to one or more ground hazard categories, wherein each ground hazard category is associated with a type of hazard on a ground surface;
- and
- wherein the two-dimensional liability map comprises a plurality of risk liability values (L1 or L2) associated with the one or more ground hazard categories;
- and
- use the liability map to control one or more parameters for controlling flight of the aircraft system, whereby said flight control system is operable to derive the two-dimensional liability map by:
- dividing a ground surface region of interest into a discretized two-dimensional grid;
- for each element of the grid, deriving an amount of area of that element that falls within a relevant ground hazard category;
- for each ground hazard category, estimating a consequence value (CY) based on a size of the aircraft system;
- and
- for each element of the grid, estimating a first risk liability value (L1) based on the derived amount of area of the element and the estimated consequence value, wherein estimating a first risk liability value (L1) comprises:
- L1=Σarea ratio for a particular ground hazard*consequence value(CY).
A method for controlling flight of an aircraft system, the method comprising:
- deriving a three-dimensional liability map using mapping data related to one or more ground hazard categories, wherein each ground hazard category is associated with a type of hazard on a ground surface, wherein the three-dimensional liability map comprises a plurality of risk liability values associated with the one or more ground hazard categories;
- and
- using the liability map to control one or more parameters for controlling flight of the aircraft system, wherein the step of deriving a three-dimensional liability map is based on a plurality of possible failure modes of the aircraft system and respective probability frequencies of the occurrence of each possible failure mode, and the plurality of failure modes comprises two or more of:
- uncontrolled glide, controlled glide, and break-up.
Dependencies are inferred from the claim text.