[특허]Method and device for displaying speed information on an aircraft

Airbus Operations (SAS)

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특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Method and device for displaying speed information on an aircraft

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06F-007/70 B64C-019/00 B64D-031/02 B64D-031/04 B64D-043/02
출원번호	US-0765010 (2013-02-12)
등록번호	US-9193441 (2015-11-24)
우선권정보	FR-12 51322 (2012-02-13)
발명자 / 주소	Muller, Jean Poujol, Christophe
출원인 / 주소	Airbus Operations (SAS)
대리인 / 주소	Nixon & Vanderhye P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 5

초록

The display device (1) comprises means (3) for correcting an acceleration value used for displaying on a screen (7) a speed trend of the airplane, making it possible to zero a speed trend symbol (11) when the Mach number of the airplane does not vary.

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1. A method of displaying speed information on an airplane comprising the following steps performed automatically and in real time: receiving a current air speed of the airplane;calculating a current acceleration value using said current air speed; anddisplaying on a viewing screen at least one speed trend symbol which is representative of an acceleration value received and which indicates a speed of the airplane at the end of a predetermined duration, wherein the speed trend symbol is displayed on a speed scale represented on the viewing screen;monitoring the aircraft and, based on the monitoring, identifying each of: the airplane being controlled to fly at a constant speed and the airplane being controlled to fly at a constant Mach number;calculating a corrected value of the current acceleration value by: determining a current vertical speed of the airplane and a coefficient value based on a current altitude and Mach number of the airplane;calculating a corrective value based on a product of the current vertical speed and the coefficient value; andsumming the corrective value and the current acceleration value to obtain the corrected value of the current-acceleration;displaying on the viewing screen a speed trend symbol symbolizing: the current acceleration value, while the airplane is controlled to fly at the constant speed; andthe corrected value while the airplane is controlled to fly at the constant Mach number. 2. The method as in claim 1, wherein the monitoring includes a selection by a pilot interacting with a control panel for an automatic piloting system in the airplane, and the selection is one of control for a flight according to a constant speed and a control for a flight according to a constant Mach number. 3. The method as in claim 1, wherein the monitoring includes at least one of: transmitting information by a flight management system indicating whether the airplane is being controlled to fly at a constant speed or a flight according to a constant Mach number. 4. A device for displaying attitude information on an airplane, said device comprising: a primary flight display (PFD) including a viewing screen and a computer, wherein the PFD is configured to;receive a current air speed of the airplane;calculate a current acceleration value of the airplane using the current air speed;generate a speed trend symbol for display on the viewing screen and proximate to a speed scale, wherein the speed trend symbol is representative of an acceleration value for the airplane and indicates a speed of the airplane at the end of a predetermined duration:monitor the airplane to identify a condition during which the airplane is controlled to fly according to a constant speed and a condition during which the airplane is controlled to fly according to a constant Mach number;calculate a corrected value of the acceleration value, wherein the calculation includes: determining a current vertical speed of the airplane and a coefficient value dependent on a current altitude and Mach number of the airplane;calculating a corrective value based on a product of the current vertical speed and the coefficient value, andadding the corrective value to the current acceleration value to obtain the corrected value,display on the viewing screen the form of the speed trend symbol, the current acceleration value while the airplane is controlled to fly according to a constant speed; anddisplay the corrected value of the acceleration value while the airplane is controlled to fly at the constant Mach number. 5. The device as in claim 4, wherein the monitoring includes a selection by a pilot interacting with a control panel of an automatic piloting system, wherein the selection is one of a control for a flight according to a constant speed and a control for a flight according to a constant Mach number. 6. The device as in claim 4, wherein the monitoring includes automatic transmission of information by a flight management system, wherein the information indicates whether the airplane is being controlled to fly at a constant speed or at a constant Mach number. 7. The device as in claim 4, wherein the view screen shows include which comprises, moreover, means for providing the data used in the calculations implemented by said device. 8. A method of displaying speed information on an airplane comprising: measuring air speed of the airplane over a period of time;calculating, responsive to said measured air speed, a current acceleration value of the airplane; anddisplaying at least one speed trend symbol symbolizing the current acceleration value and the speed of the airplane at the end of a predetermined duration on a speed scale represented on a viewing screen,monitoring the measured air speed and the current acceleration value;controlling the airplane to fly according to one of a constant speed and a constant Mach number;calculating a corrected value of the current acceleration value, wherein the calculating includes: determining a current vertical speed of the airplane and a coefficient value dependent on a current altitude and a current Mach number of the airplane;calculating a corrective value based on a product of the current vertical speed and the coefficient value, andadding the corrective value to the current acceleration value to obtain the corrected value, andtransmitting to the viewing screen for display: the current acceleration value while the airplane is controlled to fly at a constant speed; andthe corrected value of the current acceleration value while the airplane is controlled to fly at a constant Mach number. 9. The method as in claim 8, wherein the monitoring includes a selection by a pilot interacting with a control panel for an automatic piloting system, wherein the selection is one of a control for a flight according to a constant speed and a control for a flight according to a constant Mach number. 10. The method as claimed in claim 8, wherein the monitoring includes transmission of information by a flight management system, wherein the transmitted information indicates whether the control of the airplane is according to the constant speed or according to the constant Mach number. 11. A primary flight display (PFD) device for displaying attitude information on an airplane, said device comprising: a communication link providing current air speed data to the PFD device;a calculation unit associated with the PFD, responsive to the current air speed data, and configured to calculate a current acceleration value based on the current air speed data;a viewing screen associated with the PFD which displays, in real time, on a speed scale, at least one speed trend symbol representative of the current acceleration value;a monitor responsive configured to identify whether the airplane is controlled to fly according to a constant speed and whether the airplane is controlled to fly according to a constant Mach number;a calculator associated with the PFD and configured to calculate a corrected value of the current acceleration value, wherein the speed trend symbol is zero while the airplane flies at a constant March number and the air speed monitor identifies the airplane as being controlled according to the constant March number, wherein the calculation of the corrected value includes calculating a corrective value which is proportional to a current vertical speed of the airplane and a coefficient value determined using a current altitude and on current Mach number of the airplane; and adding the corrective value to the current acceleration value to obtain said corrected value; anda transmitter associated with the PFD configured to transmit to the viewing screen for display the speed trend symbol, the current acceleration value while the airplane is controlled to fly according to the constant speed; and the corrected value of the current acceleration value while the airplane is controlled to fly according to the constant Mach number. 12. The device in claim 11, wherein the monitor detects a selection by a pilot of the airplane interacting with a control panel relating to an automatic piloting system of the airplane, wherein the selection is one of to control the airplane to fly at the constant speed and to control the airplane to fly at the constant Mach number. 13. The device as claimed in claim 11, wherein the monitor transmits automatically information from a flight management system indicating whether the airplane is flying at the constant speed or at the constant Mach number. 14. A method to generate a speed trend symbol for a display in an aircraft comprising: automatically receiving a current air speed of the airplane;automatically calculating a current acceleration value of the aircraft;calculating a corrected value of the current acceleration value, wherein the corrected value is calculated using the current acceleration value, a current Mach number of the airplane and a current altitude of the airplane, and wherein the corrected value is zero while the airplane is controlled to fly at a constant Mach number;determining whether the aircraft is being controlled to fly at a constant air speed or at a constant Mach number;generating a speed trend symbol which represents the current acceleration value if the determination is that the aircraft is being controlled to fly at the constant air speed and represents the corrected acceleration value if the determination is that the aircraft is being controlled to fly at a constant Mach number; anddisplaying on a viewing screen in the airplane the generated speed trend symbol adjacent a speed scale indicating a current speed of the airplane. 15. The method of claim 14, wherein the calculation of the corrected value of the current acceleration value comprises: determining a current vertical speed dZp/dt of the airplane;determining a coefficient dCAS/dZp selected from a tabulation of coefficients dCAS/dZp, wherein the selection is based on the altitude and Mach number of the airplane;calculating a coefficient value based on a product of the current vertical speed dZp/dt and the coefficient dCAS/dZp; andsumming the corrective value and the current acceleration value to obtain the corrected value of the current acceleration value.

인용문헌 (5)

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특허 상세정보

Method and device for displaying speed information on an aircraft

초록

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특허 상세정보

Method and device for displaying speed information on an aircraft

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인용문헌 (5)

IPC 상위 출원인

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상세정보조회

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IPC 상세정보(version : 201201)

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