WO2016178182A1 - Aircraft wake turbulence awareness - Google Patents
Aircraft wake turbulence awareness Download PDFInfo
- Publication number
- WO2016178182A1 WO2016178182A1 PCT/IB2016/052580 IB2016052580W WO2016178182A1 WO 2016178182 A1 WO2016178182 A1 WO 2016178182A1 IB 2016052580 W IB2016052580 W IB 2016052580W WO 2016178182 A1 WO2016178182 A1 WO 2016178182A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- aircraft
- wake turbulence
- awareness
- wake
- risk
- Prior art date
Links
- 238000000034 method Methods 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000000007 visual effect Effects 0.000 claims description 24
- 238000012913 prioritisation Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 235000012813 breadcrumbs Nutrition 0.000 description 2
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
- G08G5/0073—Surveillance aids
- G08G5/0078—Surveillance aids for monitoring traffic from the aircraft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D43/00—Arrangements or adaptations of instruments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D45/00—Aircraft indicators or protectors not otherwise provided for
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
- G08G5/0004—Transmission of traffic-related information to or from an aircraft
- G08G5/0008—Transmission of traffic-related information to or from an aircraft with other aircraft
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
- G08G5/0017—Arrangements for implementing traffic-related aircraft activities, e.g. arrangements for generating, displaying, acquiring or managing traffic information
- G08G5/0021—Arrangements for implementing traffic-related aircraft activities, e.g. arrangements for generating, displaying, acquiring or managing traffic information located in the aircraft
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
- G08G5/0073—Surveillance aids
- G08G5/0091—Surveillance aids for monitoring atmospheric conditions
Definitions
- the present invention is directed to an aircraft avionic system and method, and in particular, to a system and method for an equipped aircraft to avoid a potential wake turbulence generated by another aircraft.
- wake turbulence can be a threat to safety of any aircraft, it is particularly dangerous for medium to small aircraft. Such wake turbulence is particularly dangerous immediately before landings and immediately after takeoffs. The task of avoiding potential wake turbulences of other aircraft is made more difficult when a pilot of an aircraft is forced to monitor the position and flight path history of multiple other aircraft.
- the present invention provides awareness to a pilot of a risk posed by wake turbulence of other aircraft.
- the present invention may be implemented as a system that is based upon information that is readily available from avionic systems of even small aircraft to provide awareness of a risk of encountering such wake turbulence.
- the invention is based upon a recognition that it is difficult for a pilot to visually estimate the distance of another aircraft and/or the time it may take to reach the flight path of that aircraft and any accompanying potential wake turbulence. As a result of such inaccuracy, it is possible for the pilot to encounter a wake turbulence even when the pilot estimates that the aircraft is sufficiently spaced from another aircraft.
- ADS-B systems are becoming popular in aircraft of all sizes and will soon be required on most aircraft systems.
- ADS-B systems receive transmissions from other aircraft in the form of an 8 character field that consists of either a flight identifier for a commercial airliner or a tail number for general aviation aircraft, as well as the relative position of the identified aircraft with respect to the equipped aircraft.
- the control system of the equipped aircraft creates a flight path history for each aircraft in its vicinity.
- Wake turbulence caution areas that follow each of those other aircraft are defined by their aircraft type and follow the respective bread crumbs of the their respective flight path histories. In other words, this wake turbulence caution area may be modified to account for lead aircraft type, typical wake vortex, descent rate, reported winds, and the like.
- the system of the equipped aircraft can provide a visual and/or aural advisory to the pilot of a potential wake turbulence associated with the intruding aircraft.
- the system can also report to the pilot the time and distance from the lead aircraft which will aid the pilot in keeping appropriate spacing from the lead aircraft.
- An avionics wake turbulence awareness system and method for use in an aircraft includes an ADS-B receiver that is adapted to be positioned in an equipped aircraft and receives ADS-B transmissions from other aircraft.
- a control system is responsive to the ADS-B receiver and determines a respective identity of each of the other aircraft and their respective movements relative to the equipped aircraft.
- the control system determines a flight path history for each of the other aircraft from their respective identities and movements relative to the equipped aircraft.
- An output device is responsive to the control system to provide guidance to a pilot of the equipped aircraft to avoid an encounter with a wake turbulence caution area that is defined by a flight path history of another aircraft.
- the guidance provided may include distance and flight time to the other aircraft.
- the flight time is based upon the ground speed of the other aircraft.
- the guidance may also include an indication that the equipped aircraft is at risk of encountering the potential wake turbulence of the at least one other aircraft.
- a pilot notification device may be provided that is responsive to the guidance in order to alert a pilot that the equipped aircraft is at risk of encountering the wake turbulence caution area of another aircraft.
- the notification device may include a display that is adapted to provide a visual indication that the equipped aircraft is at risk of encountering the wake turbulence caution area of the other aircraft.
- the visual indication may include an icon adjacent a depiction of the other aircraft on the display.
- the visual indication may include a chevron trailing the depiction of the other aircraft on the display.
- the visual indication may include a display of distance and flight time to the other aircraft.
- the notification device may also include an aural announcement via a speaker or pilot's headset that the equipped aircraft is at risk of encountering
- the avionic notification may include a visual indication of the flight path history of the other aircraft.
- the control system may be capable of determining flight path histories of each of the other aircraft and evaluating the relative risk of the equipped aircraft encountering the respective wake turbulence caution areas of each of the other aircraft. After selecting an aircraft of the other aircraft with a highest priority, guidance is provided to the pilot of the equipped aircraft to avoid an encounter with a wake turbulence caution area of the selected aircraft.
- the control system may evaluate and prioritize the other aircraft according to category types, such that other aircraft smaller than the equipped aircraft have a lower priority.
- Figure 1 is an exemplary block diagram of an avionics wake turbulence awareness system in accordance with an embodiment of the present disclosure
- Figure 2 is an exemplary block diagram of an ADS-B receiver and controller of the avionics wake turbulence awareness system illustrated in Figure 1, in accordance with an embodiment of the present disclosure
- Figure 3 is an exemplary output device of the avionics wake turbulence awareness system illustrated in Figure 1, in accordance with an embodiment of the present disclosure
- Figure 4 is a flow diagram of the steps to a computer-implemented method for wake turbulence awareness in an aircraft, in accordance with an embodiment of the present disclosure
- Figures 5A and SB illustrate exemplary wake caution areas defining the boundaries of potential wake turbulences in accordance with an embodiment of the present disclosure
- Figures 6A and 6B illustrate the exemplary wake caution areas of Figures SA and 5B that follow flight path histories in accordance with an embodiment of the present disclosure.
- FIG. 1 illustrates an exemplary avionics wake turbulence awareness system 100.
- a receiver 102 of the wake turbulence awareness system 100 may be an ADS-B receive that is capable of receiving ADS-B transmissions from other aircraft.
- the transmission be in the form of an 8-character field that consists of either a flight identifier for a commercial airliner or a tail number for a general aviation aircraft, as well as the relative position of the identified aircraft with respect to the equipped aircraft.
- the wake turbulence awareness system 100 includes a control system 104 (also known herein as a controller 104) that is responsive to the ADS-B receiver 102 in order to receive transmissions from other aircraft.
- the wake turbulence awareness system 100 may include any form of ADS-B receiver 102 and accompanying controller 104, and may be of the type disclosed in commonly assigned U.S. Patent No.
- the wake turbulence awareness system 100 also includes an output device 108, which comprises a visual display screen 110.
- the output device 108 may also optionally include an annunciator 112.
- the annunciator 112 may be implemented as one or more speakers in the aircraft and via a pilot's aural headset.
- the output device 108 is responsive to the control system 104 to provide guidance to a pilot of the equipped aircraft to avoid encounters with potential wake turbulences of other aircraft.
- Figure 2 illustrates that the ADS-B receiver 102 of Figure 1 may comprise a 1090 ES receiver 102a and/or a 978 MHz UAT receiver 102b. As illustrated in Figure 2, either of the 1090 ES receiver 102a and the 978 MHz UAT receiver 102b forwards the received ADS-B transmissions to the controller 104 for processing.
- Figure 3 illustrates an exemplary output device 108 that incorporates a display screen 110 and an annunciator 112.
- the guidance may include a visual distance indication 302 indicating a distance in nautical miles to another aircraft.
- the guidance may include a time indication 304 advising the pilot of an estimated time behind the other aircraft or to the potential wake encounter computed at least in part from the ADS-B system.
- the guidance may include a visual indication 306 that the equipped aircraft is at risk of encountering the wake turbulence caution area of the other aircraft.
- an icon 306 is used as a visual indication 306. As illustrated in Figure 3, the icon 306 may be placed adjacent a depiction of the other aircraft on the display 110.
- the icon 306 may take other forms, but is shown as a chevron trailing the depiction of the other aircraft on the display 110. As discussed below, and illustrated in Figures 6A and 6B, the icon 306 may be paired with a visual depiction of the flight path history 602 of the other aircraft in order to give the pilot a better understanding of the form of potential wake turbulences that should be avoided. As illustrated in Figures 6A and 6B, and discussed herein, such visual indication of the flight path 602 of the other aircraft may be in the form of dotted "bread crumbs" or other intuitive indications of the flight path history 602 of the other aircraft.
- the output device 108 may include an aural annunciator 112 that verbally notifies the pilot via an aural announcement that the equipped aircraft is at risk of encountering the wake turbulence caution area of the other aircraft.
- Figure 4 illustrates the exemplary steps to a computer-implemented method for providing guidance to a pilot of an equipped aircraft that the equipped aircraft is at risk of encountering a wake turbulence caution area of another aircraft.
- an ADS-B Out message is received from an intruding aircraft.
- an "intruding aircraft” is merely another aircraft leading the equipped aircraft that occupies the same general airspace as the equipped aircraft. Such an intruding aircraft has a potential wake turbulence that the equipped aircraft may need to avoid.
- the received ADS-B Out message is decoded to determine position, flight path, and aircraft ID of the intruding aircraft.
- data corresponding to the aircraft ID is retrieved from the database in the memory 106 based upon the determined aircraft ID.
- a wake turbulence caution area may be defined with regards to its length, height, and width.
- the defined length may be three minutes in length, based upon the intruding aircraft's ground speed, a height or vertical dimension may be a thousand feet in height, while a width or horizontal dimension may also be a thousand feet in width.
- the vertical and horizontal dimensions are variable based upon the intruding aircraft's category type. For example, larger aircraft types define larger horizontal and vertical dimensions.
- historical positions of the intruding aircraft are recorded in the memory 106. Such recorded positions may be used, as discussed herein, to define the location of any potential wake vortex/turbulence.
- the equipped aircraft's position and flight path are computed based upon positioning data received from a global positioning system (GPS) receiver 114 in the equipped aircraft.
- GPS global positioning system
- the GPS receiver 114 determines the position of the equipped aircraft and transmits the positioning data to the controller 104.
- a distance and time from the equipped aircraft to the intruder and its associated wake turbulence caution area is determined.
- the wake turbulence caution area may be defined.
- a wake advisory will be transmitted to the output device 108.
- a visual wake advisory is displayed in the display screen 110 and an audible wake advisory is announced in the annunciator 112.
- the text box "WAKE” the icon 306 (e.g., chevrons), a determined nautical mile range 302 to the potential wake
- the controller will indicate the above wake
- the avionic wake turbulence awareness system 100 may receive ADS-B transmissions from multiple aircraft within the vicinity of the equipped aircraft. It is possible that more than one of these multiple aircraft may have a flight path history that indicates that there is a potential wake turbulence risk to the equipped aircraft.
- the controller 104 may utilize a prioritization scheme that is capable of determining among the flight path histories of the multiple other aircraft, which of the multiple other aircraft creates a greatest risk of the equipped aircraft encountering the potential wake turbulence of that aircraft. The controller 104 may then provide guidance to the pilot of the equipped aircraft to avoid a potential encounter with the highest risk potential wake turbulence.
- the visual indication 306 may be displayed at only one aircraft depiction, and the distance 302 and time of separation 304 for only that intruding aircraft, even though multiple aircraft depictions may be displayed on the display screen 110.
- This prioritization scheme avoids the pilot needing to make a choice as to which intruding aircraft needs to be avoided in order to take the least risky route.
- the avionic wake turbulence awareness system 100 may utilize a hierarchy to prioritize advisories, select a highest threat intruder, and suppress advisories for much smaller aircraft that would not create a significant wake vortex/turbulence as compared to the equipped aircraft.
- Tables I & ⁇ are an exemplary aircraft assignment for a six category system, as proposed by the Federal Aviation Administration (FAA). The list is not all-inclusive. As illustrated in Table I, aircraft models are categorized according to size, from Category A (the largest) to Category F (the smallest). Table ⁇ illustrates how the necessary separation between aircraft can vary according to the varying sizes of the leader aircraft and the follower aircraft. The minimum separation increases with the size ratio between the leading aircraft and the trailing aircraft.
- the minimum radar separation is a variable minimum horizontal separation required between radar controlled aircraft, based upon their range from the controlling radar.
- the MRS may be 3-8 nautical miles.
- the minimum required separation may be greater than the MRS, such as when the following aircraft type is smaller than the leading aircraft type.
- Figures SA and SB illustrate exemplary wake turbulence caution areas 502 and how the dimensions of the wake turbulence caution area 502 are defined by the type of intruder/leading aircraft and related information.
- an exemplary wake turbulence caution area 502 may be three minutes in length, based upon the ground speed of the
- the exemplary wake caution area's vertical dimension, extending below the altitude of the intruder/leading aircraft, may be a notional 1000 feet for category A-D types, and a notional 600 feet for category E & F types.
- the wake caution area 502 extends below the intruder/leading aircraft because a wake turbulence may drift down over time.
- the wake turbulence caution area's exemplary width may also vary according to category type.
- the width may also be a notional 1000 feet for category A-D types, and a notional 600 feet for category E & F types.
- the exemplary length, width, and height values are notional, and other dimensions based on category types are anticipated.
- Figures 6A and 6B illustrate exemplary wake turbulence caution areas 502 that are shaped to follow the flight path histories 602 of the intruder/leading aircraft.
- a wake turbulence caution area's dimensions will conform to the path of a flight path history as it moves in three dimensions.
- embodiments of the present invention are capable of improving safety by providing quantitative separation information for a flight operation that is typically performed visually using the pilot's judgement.
- the system provides awareness to a developing or potential wake turbulence encounter that may not be readily apparent to the pilot, such as crossing flight paths that may occur during any phase of the flight. This may be accomplished because the flight paths of both aircraft may be known from the controller 104 that is responsive to the ADS-B receiver 102.
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Traffic Control Systems (AREA)
- Alarm Systems (AREA)
- Radio Relay Systems (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2984866A CA2984866A1 (en) | 2015-05-07 | 2016-05-05 | Aircraft wake turbulence awareness |
BR112017023755-5A BR112017023755B1 (en) | 2015-05-07 | 2016-05-05 | TURBULENCE BEILING AVIONIC ALERT SYSTEM FOR USE ON AN AIRCRAFT AND TURBULENCE BEILING ALERT METHOD ON AN AIRCRAFT |
AU2016257208A AU2016257208B2 (en) | 2015-05-07 | 2016-05-05 | Aircraft wake turbulence awareness |
EP16789393.2A EP3292429A4 (en) | 2015-05-07 | 2016-05-05 | Aircraft wake turbulence awareness |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201562158340P | 2015-05-07 | 2015-05-07 | |
US62/158,340 | 2015-05-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016178182A1 true WO2016178182A1 (en) | 2016-11-10 |
Family
ID=57218144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2016/052580 WO2016178182A1 (en) | 2015-05-07 | 2016-05-05 | Aircraft wake turbulence awareness |
Country Status (5)
Country | Link |
---|---|
US (1) | US9911342B2 (en) |
EP (1) | EP3292429A4 (en) |
AU (1) | AU2016257208B2 (en) |
CA (1) | CA2984866A1 (en) |
WO (1) | WO2016178182A1 (en) |
Cited By (1)
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CN108198462A (en) * | 2018-01-25 | 2018-06-22 | 中国民航大学 | A kind of full spatial domain aircraft wake meets with risk warning system implementation method |
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FR3051586B1 (en) * | 2016-05-19 | 2018-05-18 | Airbus Operations | METHOD FOR IDENTIFYING THE PROXIMITY OF A WAKE TURBULENCE AND FOR GENERATING A REPORT RELATING TO THIS PROXIMITY |
FR3065567B1 (en) * | 2017-04-24 | 2021-04-16 | Airbus Operations Sas | PROCESS FOR TRANSMISSION OF FLIGHT PARAMETERS FROM A LEADING AIRCRAFT TO AN INTRUDER AIRCRAFT |
US10055998B1 (en) * | 2017-08-25 | 2018-08-21 | Airbus Operations (S.A.S.) | Ground-based identification of wake turbulence encounters |
WO2020046998A1 (en) * | 2018-08-27 | 2020-03-05 | Gulfstream Aerospace Corporation | Avoidance of aircraft and aircraft wake during flight |
US11348469B2 (en) | 2018-09-25 | 2022-05-31 | Aviation Communication & Surveillance Systems, Llc | Systems and methods for providing wake situational awareness displays |
GB2578893B (en) | 2018-11-12 | 2021-10-06 | Ge Aviat Systems Ltd | Flight management system and method of updating flight calculations |
GB2579191B (en) * | 2018-11-22 | 2022-07-13 | Ge Aviat Systems Ltd | Method and system to identify and display suspcious aircraft |
US11030907B1 (en) | 2020-06-19 | 2021-06-08 | Honeywell International Inc. | Methods, systems, and apparatuses for identifying and indicating the secondary runway aiming point (SRAP) approach procedures |
US11501647B2 (en) | 2020-09-22 | 2022-11-15 | Rockwell Collins, Inc. | Estimated wake turbulence trail for aircraft system |
US20230326353A1 (en) * | 2022-03-01 | 2023-10-12 | Scott Beale | Status reporting system for aircraft |
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Cited By (2)
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CN108198462A (en) * | 2018-01-25 | 2018-06-22 | 中国民航大学 | A kind of full spatial domain aircraft wake meets with risk warning system implementation method |
CN108198462B (en) * | 2018-01-25 | 2018-12-14 | 中国民航大学 | A kind of full airspace aircraft wake experience risk warning system implementation method |
Also Published As
Publication number | Publication date |
---|---|
AU2016257208A2 (en) | 2018-03-15 |
BR112017023755A2 (en) | 2018-07-31 |
EP3292429A1 (en) | 2018-03-14 |
AU2016257208A1 (en) | 2017-11-23 |
US9911342B2 (en) | 2018-03-06 |
CA2984866A1 (en) | 2016-11-10 |
AU2016257208B2 (en) | 2021-03-11 |
EP3292429A4 (en) | 2019-01-09 |
US20160328981A1 (en) | 2016-11-10 |
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