# US 2014/0207356 A1 · Method and device for communicating true runway braking performance using data from the flight data management systems of landed aircraft > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0207356 A1 - Document ID: US20140207356A1 - Status: Published application - Kind: A1 - Application number: 13/999,758 - Filed: 2014-03-19 - Published: 2014-07-24 - Earliest claimed: 2005-02-23 - Assignees: Aviation Safety Technologies, LLC - Applicants: Aviation Safety Technologies, LLC - Inventors: Zoltan Ivan Rado - Web page: https://patentgrep.com/patent/US20140207356A1 ## CPC - B64C 25/42: Arrangement or adaptation of brakes - B60T 8/1703: {for aircrafts} - B60T 8/171: Detecting parameters used in the regulation; Measuring values used in the regulation - B64C 19/00: Aircraft control not otherwise provided for - B64C 25/426: {Braking devices providing an automatic sequence of braking} - B64D 45/04: Landing aids; Safety measures to prevent collision with earth's surface - G16Z 99/00: Subject matter not provided for in other main groups of this subclass - B64C: AEROPLANES; HELICOPTERS - B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES - B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT - G16Z: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS, NOT OTHERWISE PROVIDED FOR ## Abstract This invention relates to a computer network for calculating and distributing the true braking coefficient of aircraft on runways and taxiways using a computer which obtains data from an aircraft, including in some preferable embodiments dynamic aircraft properties recorded on the aircraft's flight data management system. Environmental and aircraft parameters may also be used to calculate the braking friction coefficient. A computer and network are used to obtain data and to calculate the friction coefficient, and may be used to distribute the result. The network may utilize, at least in part, wireless local area networks to facilitate data transfer and distribution of the result. The computer for calculating the braking coefficient may be located on the aircraft. ## Claims ### Claim 1 A computer network for calculating and distributing a true aircraft braking friction coefficient of an aircraft runway or aircraft taxiway, comprising: (A) A computer for obtaining aircraft property data directly or indirectly from an aircraft, wherein the aircraft property data comprises data pertaining to one or more of the following aircraft properties measured at various times for the aircraft: aircraft ground speed, aircraft brake pressure, aircraft longitudinal acceleration, aircraft engine thrust setting, aircraft reverse thrust setting, aircraft engine revolutions per minute, aircraft air speed, aircraft vertical acceleration, aircraft spoiler setting, aircraft airbrake setting, aircraft aileron setting, aircraft flap configuration, aircraft pitch, and aircraft autobrake setting; and (B) Wherein the computer calculates the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway using at least some of the aircraft property data obtained by the computer. ### Claim 2 (depends on 1) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway of claim 1 wherein: (A) The aircraft from which the computer obtains aircraft property data has a flight data management system; (B) The aircraft property data is recorded on the aircraft's flight data management system; and (C) Wherein the computer obtains at least some of the aircraft property data directly or indirectly from the aircraft's flight data management system. ### Claim 3 (depends on 1) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway of claim 1 wherein the computer is located on the aircraft. ### Claim 4 (depends on 2) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway of claim 2 wherein the computer is located on the aircraft. ### Claim 5 (depends on 1) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway of claim 1: (A) Wherein the computer obtains environmental parameter data directly or indirectly from one or more data sources for one or more environmental parameters chosen from the following group: air temperature, air pressure, relative humidity, wind speed, wind direction, pressure altitude, and aircraft surface elevation; and (B) Wherein the computer calculates the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway using at least some of the environmental parameter data. ### Claim 6 (depends on 2) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway of claim 2: (A) Wherein the computer obtains environmental parameter data directly or indirectly from one or more data sources for one or more environmental parameters chosen from the following group: air temperature, air pressure, relative humidity, wind speed, wind direction, pressure altitude, and aircraft surface elevation; and (B) Wherein the computer calculates the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway using at least some of the environmental parameter data. ### Claim 7 (depends on 3) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway of claim 3: (A) Wherein the computer obtains environmental parameter data directly or indirectly from one or more data sources for one or more environmental parameters chosen from the following group: air temperature, air pressure, relative humidity, wind speed, wind direction, pressure altitude, and aircraft surface elevation; and (B) Wherein the computer calculates the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway using at least some of the environmental parameter data. ### Claim 8 (depends on 4) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway of claim 4: (A) Wherein the computer obtains environmental parameter data directly or indirectly from one or more data sources for one or more environmental parameters chosen from the following group: air temperature, air pressure, relative humidity, wind speed, wind direction, pressure altitude, and aircraft surface elevation; and (B) Wherein the computer calculates the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway using at least some of the environmental parameter data. ### Claim 9 (depends on 1) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway of claim 1: (A) Wherein the computer obtains aircraft parameter data directly or indirectly from one or more data sources for one or more aircraft parameters pertaining to the aircraft chosen from the following group: aircraft landing mass, aircraft engine type, number of aircraft engines, aircraft tire type, and aircraft type; and (B) Wherein the computer calculates the true aircraft braking friction coefficient of the aircraft runway or taxiway using at least some of the aircraft parameter data. ### Claim 10 (depends on 2) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway of claim 2: (A) Wherein the computer obtains aircraft parameter data directly or indirectly from one or more data sources for one or more aircraft parameters pertaining to the aircraft chosen from the following group: aircraft landing mass, aircraft engine type, number of aircraft engines, aircraft tire type, and aircraft type; and (B) Wherein the computer calculates the true aircraft braking friction coefficient of the aircraft runway or taxiway using at least some of the aircraft parameter data. ### Claim 11 (depends on 3) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway of claim 3: (A) Wherein the computer obtains at least some of the aircraft parameter data directly or indirectly from one or more data sources for one or more aircraft parameters pertaining to the aircraft chosen from the following group: aircraft landing mass, aircraft engine type, number of aircraft engines, aircraft tire type, and aircraft type; and (B) Wherein the computer calculates the true aircraft braking friction coefficient of the aircraft runway or taxiway using at least some of the aircraft parameter data. ### Claim 12 (depends on 4) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway of claim 4: (A) Wherein the computer obtains at least some of the aircraft parameter data directly or indirectly from one or more data sources for one or more aircraft parameters pertaining to the aircraft chosen from the following group: aircraft landing mass, aircraft engine type, number of aircraft engines, aircraft tire type, and aircraft type; and (B) Wherein the computer calculates the true aircraft braking friction coefficient of the aircraft runway or taxiway using at least some of the aircraft parameter data. ### Claim 13 (depends on 5) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway of claim 5: (A) Wherein the computer obtains aircraft parameter data directly or indirectly from one or more data sources for one or more aircraft parameters pertaining to the aircraft chosen from the following group: aircraft landing mass, aircraft engine type, number of aircraft engines, aircraft tire type, and aircraft type; and (B) Wherein the computer calculates the true aircraft braking friction coefficient of the aircraft runway or taxiway using at least some of the aircraft parameter data. ### Claim 14 (depends on 6) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway of claim 6: (A) Wherein the computer obtains aircraft parameter data directly or indirectly from one or more data sources for one or more aircraft parameters pertaining to the aircraft chosen from the following group: aircraft landing mass, aircraft engine type, number of aircraft engines, aircraft tire type, and aircraft type; and (B) Wherein the computer calculates the true aircraft braking friction coefficient of the aircraft runway or taxiway using at least some of the aircraft parameter data. ### Claim 15 (depends on 7) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway of claim 7: (A) Wherein the computer obtains aircraft parameter data directly or indirectly from one or more data sources for one or more aircraft parameters pertaining to the aircraft chosen from the following group: aircraft landing mass, aircraft engine type, number of aircraft engines, aircraft tire type, and aircraft type; and (B) Wherein the computer calculates the true aircraft braking friction coefficient of the aircraft runway or taxiway using at least some of the aircraft parameter data. ### Claim 16 (depends on 8) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or aircraft taxiway of claim 8: (A) Wherein the computer obtains aircraft parameter data directly or indirectly from one or more data sources for one or more aircraft parameters pertaining to the aircraft chosen from the following group: aircraft landing mass, aircraft engine type, number of aircraft engines, aircraft tire type, and aircraft type; and (B) Wherein the computer calculates the true aircraft braking friction coefficient of the aircraft runway or taxiway using at least some of the aircraft parameter data. ### Claim 17 (depends on 1) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 1, wherein the true aircraft braking friction coefficient calculated by the computer may be accessed by or provided to one or more of the following individuals or entities via the computer network: airline operation personnel, pilots, airport personnel, airline managers, airport managers, airport maintenance crews, pilots of aircraft scheduled to take off, land, or taxi on the aircraft runway or taxiway, personnel involved in ground operations where the aircraft runway or taxiway is located, aircraft scheduling and dispatch personnel, flight service center personnel, government aviation authority personnel, air traffic controllers, airline employees, and aircraft manufacturers. ### Claim 18 (depends on 2) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 2, wherein the true aircraft braking friction coefficient calculated by the computer may be accessed by or provided to one or more of the following individuals or entities via the computer network: airline operation personnel, pilots, airport personnel, airline managers, airport managers, airport maintenance crews, pilots of aircraft scheduled to take off, land, or taxi on the aircraft runway or taxiway, personnel involved in ground operations where the aircraft runway or taxiway is located, aircraft scheduling and dispatch personnel, flight service center personnel, government aviation authority personnel, air traffic controllers, airline employees, and aircraft manufacturers. ### Claim 19 (depends on 3) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 3, wherein the true aircraft braking friction coefficient calculated by the computer may be accessed by or provided to one or more of the following individuals or entities via the computer network: airline operation personnel, pilots, airport personnel, airline managers, airport managers, airport maintenance crews, pilots of aircraft scheduled to take off, land, or taxi on the aircraft runway or taxiway, personnel involved in ground operations where the aircraft runway or taxiway is located, aircraft scheduling and—dispatch personnel, flight service center personnel, government aviation authority personnel, air traffic controllers, airline employees, and aircraft manufacturers. ### Claim 20 (depends on 4) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 4, wherein the true aircraft braking friction coefficient calculated by the computer may be accessed by or provided to one or more of the following individuals or entities vie the computer network: airline operation personnel, pilots, airport personnel, airline managers, airport managers, airport maintenance crews, pilots of aircraft scheduled to take off, land, or taxi on the aircraft runway or taxiway, personnel involved in ground operations where the aircraft runway or taxiway is located, aircraft scheduling and dispatch personnel, flight service center personnel, government aviation authority personnel, air traffic controllers, airline employees, and aircraft manufacturers. ### Claim 21 (depends on 5) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 5, wherein the true aircraft braking friction coefficient calculated by the computer may be accessed by or provided to one or more of the following individuals or entities via the computer network: airline operation personnel, pilots, airport personnel, airline managers, airport managers, airport maintenance crews, pilots of aircraft scheduled to take off, land, or taxi on the aircraft runway or taxiway, personnel involved in ground operations where the aircraft runway or taxiway is located, aircraft scheduling and dispatch personnel, flight service center personnel, government aviation authority personnel, air traffic controllers, airline employees, and aircraft manufacturers. ### Claim 22 (depends on 6) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 6, wherein the true aircraft braking friction coefficient calculated by the computer may be accessed by or provided to one or more of the following individuals or entities via the computer network: airline operation personnel, pilots, airport personnel, airline managers, airport managers, airport maintenance crews, pilots of aircraft scheduled to take off, land, or taxi on the aircraft runway or taxiway, personnel involved in ground operations where the aircraft runway or taxiway is located, aircraft scheduling and dispatch personnel, flight service center personnel, government aviation authority personnel, air traffic controllers, airline employees, and aircraft manufacturers. ### Claim 23 (depends on 7) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 7, wherein the true aircraft braking friction coefficient calculated by the computer may be accessed by or provided to one or more of the following individuals or entities via the computer network: airline operation personnel, pilots, airport personnel, airline managers, airport managers, airport maintenance crews, pilots of aircraft scheduled to take off, land, or taxi on the aircraft runway or taxiway, personnel involved in ground operations where the aircraft runway or taxiway is located, aircraft scheduling and dispatch personnel, flight service center personnel, government aviation authority personnel, air traffic controllers, airline employees, and aircraft manufacturers. ### Claim 24 (depends on 8) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 8, wherein the true aircraft braking friction coefficient calculated by the computer may be accessed by or provided to one or more of the following individuals or entities via the computer network: airline operation personnel, pilots, airport personnel, airline managers, airport managers, airport maintenance crews, pilots of aircraft scheduled to take off, land, or taxi on the aircraft runway or taxiway, personnel involved in ground operations where the aircraft runway or taxiway is located, aircraft scheduling and dispatch personnel, flight service center personnel, government aviation authority personnel, air traffic controllers, airline employees, and aircraft manufacturers. ### Claim 25 (depends on 9) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 9, wherein the true aircraft braking friction coefficient calculated by the computer may be accessed by or provided to one or more of the following individuals or entities via the computer network: airline operation personnel, pilots, airport personnel, airline managers, airport managers, airport maintenance crews, pilots of aircraft scheduled to take off, land, or taxi on the aircraft runway or taxiway, personnel involved in ground operations where the aircraft runway or taxiway is located, aircraft scheduling and dispatch personnel, flight service center personnel, government aviation authority personnel, air traffic controllers, airline employees, and aircraft manufacturers. ### Claim 26 (depends on 10) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 10, wherein true aircraft braking friction coefficient calculated by the computer may be accessed by or provided to one or more of the following individuals or entities via the computer network: airline operation personnel, pilots, airport personnel, airline managers, airport managers, airport maintenance crews, pilots of aircraft scheduled to take off, land, or taxi on the aircraft runway or taxiway, personnel involved in ground operations where the aircraft runway or taxiway is located, aircraft scheduling and dispatch personnel, flight service center personnel, government aviation authority personnel, air traffic controllers, airline employees, and aircraft manufacturers. ### Claim 27 (depends on 11) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 11, wherein true aircraft braking friction coefficient calculated by the computer may be accessed by or provided to one or more of the following individuals or entities via the computer network: airline operation personnel, pilots, airport personnel, airline managers, airport managers, airport maintenance crews, pilots of aircraft scheduled to take off, land, or taxi on the aircraft runway or taxiway, personnel involved in ground operations where the aircraft runway or taxiway is located, aircraft scheduling and dispatch personnel, flight service center personnel, government aviation authority personnel, air traffic controllers, airline employees, and aircraft manufacturers. ### Claim 28 (depends on 12) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 12, wherein true aircraft braking friction coefficient calculated by the computer may be accessed by or provided to one or more of the following individuals or entities via the computer network: airline operation personnel, pilots, airport personnel, airline managers, airport managers, airport maintenance crews, pilots of aircraft scheduled to take off, land, or taxi on the aircraft runway or taxiway, personnel involved in ground operations where the aircraft runway or taxiway is located, aircraft scheduling and dispatch personnel, flight service center personnel, government aviation authority personnel, air traffic controllers, airline employees, and aircraft manufacturers. ### Claim 29 (depends on 13) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 13, wherein true aircraft braking friction coefficient calculated by the computer may be accessed by or provided to one or more of the following individuals or entities via the computer network: airline operation personnel, pilots, airport personnel, airline managers, airport managers, airport maintenance crews, pilots of aircraft scheduled to take off, land, or taxi on the aircraft runway or taxiway, personnel involved in ground operations where the aircraft runway or taxiway is located, aircraft scheduling and dispatch personnel, flight service center personnel, government aviation authority personnel, air traffic controllers, airline employees, and aircraft manufacturers. ### Claim 30 (depends on 14) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 14, wherein the true aircraft braking friction coefficient calculated by the computer may be accessed by or provided to one or more of the following individuals or entities via the computer network: airline operation personnel, pilots, airport personnel, airline managers, airport managers, airport maintenance crews, pilots of aircraft scheduled to take off, land, or taxi on the aircraft runway or taxiway, personnel involved in ground operations where the aircraft runway or taxiway is located, aircraft scheduling and dispatch personnel, flight service center personnel, government aviation authority personnel, air traffic controllers, airline employees, and aircraft manufacturers. ### Claim 31 (depends on 15) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 15, wherein the true aircraft braking friction coefficient calculated by the computer may be accessed by or provided to one or more of the following individuals or entities via the computer network: airline operation personnel, pilots, airport personnel, airline managers, airport managers, airport maintenance crews, pilots of aircraft scheduled to take off, land, or taxi on the aircraft runway or taxiway, personnel involved in ground operations where the aircraft runway or taxiway is located, aircraft scheduling and dispatch personnel, flight service center personnel, government aviation authority personnel, air traffic controllers, airline employees, and aircraft manufacturers. ### Claim 32 (depends on 16) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 16, wherein the true aircraft braking friction coefficient calculated by the computer may be accessed by or provided to one or more of the following individuals or entities via the computer network: airline operation personnel, pilots, airport personnel, airline managers, airport managers, airport maintenance crews, pilots of aircraft scheduled to take off, land, or taxi on the aircraft runway or taxiway, personnel involved in ground operations where the aircraft runway or taxiway is located, aircraft scheduling and dispatch personnel, flight service center personnel, government aviation authority personnel, air traffic controllers, airline employees, and aircraft manufacturers. ### Claim 33 (depends on 1) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 1 wherein at least some of the aircraft property data recorded on the flight data management system is measured substantially at or after the time when the aircraft touches down on the aircraft runway during landing. ### Claim 34 (depends on 2) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 2 wherein at least some of the aircraft property data recorded on the flight data management system is measured substantially at or after the time when the aircraft touches down on the aircraft runway during landing. ### Claim 35 (depends on 33) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 33 wherein at least some of the aircraft property data recorded on the flight data management system is measured substantially before or until the aircraft completes taxiing following landing. ### Claim 36 (depends on 34) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 34 wherein at least some of the aircraft property data recorded on the flight data management system is measured substantially before or until the aircraft completes taxiing following landing. ### Claim 37 (depends on 5) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 5 wherein at least some of the aircraft property data recorded on the flight data management system is measured substantially at or after the time when the aircraft touches down on the aircraft runway during landing. ### Claim 38 (depends on 6) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 6 wherein at least some of the aircraft property data recorded on the flight data management system is measured substantially at or after the time when the aircraft touches down on the aircraft runway during landing ### Claim 39 (depends on 37) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 37 wherein at least some of the aircraft property data recorded on the flight data management system is measured substantially before or until the aircraft completes taxiing following landing. ### Claim 40 (depends on 38) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 38 wherein at least some of the aircraft property data recorded on the flight data management system is measured substantially before or until the aircraft completes taxiing following landing. ### Claim 41 (depends on 5) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 5 wherein at least some of the environmental parameter data is measured substantially in the vicinity of the aircraft. ### Claim 42 (depends on 6) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 6 wherein at least some of the environmental parameter data is measured substantially in the vicinity of the aircraft. ### Claim 43 (depends on 7) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 7 wherein at least some of the environmental parameter data is measured substantially in the vicinity of the aircraft. ### Claim 44 (depends on 8) The computer network for calculating and distributing the true aircraft braking friction coefficient of the aircraft runway or taxiway of claim 8 wherein at least some of the environmental parameter data is measured substantially in the vicinity of the aircraft.