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US5615118A Expired / Lapsed US ⏱️ 0.0 years remaining

Onboard aircraft flight path optimization system

Assignee: Individual
•
Filing: 1995-12-11
•
Granted: 1997-03-25
•
Expires: 2015-12-11
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Abstract

Abstract An onboard aircraft flight optimization system that includes an onboard performance management computer, a control display unit, an infrared probe, a temperature probe, a weather radar, an inertial navigation system, and comparing apparatus. The control display unit inputs a position remote from an aircraft into the performance management computer. The infrared probe determines temperature at the position remote from the aircraft and generates a remote temperature signal received by the performance management computer. The temperature probe determines temperature at the aircraft and generates a local temperature signal received by the performance management computer. The weather radar determines wind at the position remote from the aircraft and generates a remote wind signal received by the performance management computer. The inertial navigation system determines wind at the aircraft and generates a local wind signal received by the performance management computer. And, the comparing apparatus is disposed in the performance management computer and compares the remote wind signal with the local wind signal and compares the remote temperature signal with the local temperature signal so as to determine the position remote from the aircraft where the remote wind signal is less than the local wind signal so that an altitude can be achieved that has less head wind and is therefore more economically efficient.

Inventors

  • 👤 Robert K. Frank

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 05:13
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/10; G01C21/12; G01C21/16; G01C21/183; G01S; G01S13/00; G01S13/86; G01S13/88; G01S13/95; G01S13/953; G05; G05D; G05D1/00; G05D1/0005; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/22; Y; Y02; Y02A; Y02A90/00; Y02A90/10

Claims Analysis

Total Claims: 47
Claim 1
Independent Claim 212 words
An onboard aircraft flight optimization system, comprising: a) an onboard performance management computer; b) an onboard control display unit for inputting a position remote from an aircraft into said onboard performance management computer; c) an onboard infrared probe for determining temperature at the position remote from the aircraft and generating a remote temperature signal received by said onboard performance management computer; d) an onboard temperature probe for determining temperature at the aircraft and generating a local temperature signal received by said onboard performance management computer; e) an onboard weather radar for determining wind at the position remote from the aircraft and generating a remote wind signal received by said onboard performance management computer; f) an onboard inertial navigation system for determining wind at the aircraft and generating a local wind signal received by said onboard performance management computer; and g) onboard comparing means disposed in said onboard performance management computer for comparing said remote wind signal with said local wind signal and comparing said remote temperature signal with said local temperature signal so as to determine the position remote from the aircraft where said remote wind signal is less than said local wind signal so that an altitude can be achieved that has less head wind and is therefore more economically efficient.
Claim 2
Dependent Claim 212 words
An onboard aircraft flight optimization system, comprising: a) an onboard performance management computer; b) an onboard control display unit for inputting a position remote from an aircraft into said onboard performance management computer; c) an onboard infrared probe for determining temperature at the position remote from the aircraft and generating a remote temperature signal received by said onboard performance management computer; d) an onboard temperature probe for determining temperature at the aircraft and generating a local temperature signal received by said onboard performance management computer; e) an onboard weather radar for determining wind at the position remote from the aircraft and generating a remote wind signal received by said onboard performance management computer; f) an onboard inertial navigation system for determining wind at the aircraft and generating a local wind signal received by said onboard performance management computer; and g) onboard comparing means disposed in said onboard performance management computer for comparing said remote wind signal with said local wind signal and comparing said remote temperature signal with said local temperature signal so as to determine the position remote from the aircraft where said remote wind signal is less than said local wind signal so that an altitude can be achieved that has less head wind and is therefore more economically efficient.
Claim 3
Dependent Claim 26 words
The system as defined in claim 1, wherein said onboard control display unit includes an onboard pilot keyboard for inputting the position remote from the aircraft.
Claim 4
Dependent Claim 26 words
The system as defined in claim 2, wherein said onboard weather radar is a dual radar system that includes backup protection against a single system failure.
Claim 5
Dependent Claim 30 words
The system as defined in claim 3, wherein said onboard weather radar is a doppler weather surveillance radar system designed to provide early weather detection of wind shear and turbulence.
Claim 6
Dependent Claim 28 words
The system as defined in claim 4, wherein said onboard weather radar calculates both the speed and direction of the wind at the position remote from the aircraft.
Claim 7
Dependent Claim 35 words
The system as defined in claim 5, wherein said onboard weather radar detects the speed and the direction of the wind at the position remote from the aircraft up to a range of 300 nm.
Claim 8
Dependent Claim 37 words
The system as defined in claim 6, wherein said onboard weather radar detects the speed and the direction of the wind at the position remote from the aircraft over a scan angle of at least 170 degrees.
Claim 9
Dependent Claim 20 words
The system as defined in claim 7, wherein said onboard weather radar provides terrain display to detect rough terrain turbulence.
Claim 10
Dependent Claim 38 words
The system as defined in claim 8, wherein said onboard weather radar includes a pencil antenna beam for terrain display at altitudes above 25,000 feet and an elongated antenna beam for terrain display at altitudes below 25,000 feet.
Claim 11
Dependent Claim 39 words
The system as defined in claim 9, wherein said onboard comparing means compares said remote wind signal with said local wind signal and compares said remote temperature signal with said local temperature signal at intervals of 50 nautical miles.
Claim 12
Dependent Claim 16 words
The system as defined in claim 10, wherein said onboard weather radar detects clear air turbulence.
Claim 13
Dependent Claim 43 words
The system as defined in claim 11, wherein said onboard weather radar detects clear air turbulence by receiving scattering from conglomerates of small targets concentrated at specific locations in the atmosphere in a range corresponding to the top of the planetary boundary layer.
Claim 14
Dependent Claim 43 words
The system as defined in claim 12, wherein said scattering is visualized as a reflection provided by a mismatch in the atmosphere caused by a change in refractive index of the atmosphere and whose fluctuations are a direct measure of the air motion.
Claim 15
Dependent Claim 16 words
The system as defined in claim 13; further comprising an onboard clear air turbulence alert computer.
Claim 16
Dependent Claim 44 words
The system as defined in claim 14, wherein said onboard clear air turbulence alert computer receives a clear air turbulence signal generated by said onboard weather radar when said onboard weather radar detects clear air turbulence and generates a clear air turbulence alert signal.
Claim 17
Dependent Claim 16 words
The system as defined in claim 15; further comprising an onboard clear air turbulence computer alert.
Claim 18
Dependent Claim 31 words
The system as defined in claim 16, wherein said onboard clear air turbulence computer alert illuminates when said onboard clear air turbulence computer alert receives said clear air turbulence alert signal.
Claim 19
Dependent Claim 24 words
The system as defined in claim 17, wherein said onboard performance management system computer stores all performance data and engines tables for the aircraft.
Claim 20
Dependent Claim 35 words
The system as defined in claim 18, wherein said onboard performance management system computer is coupled to the autopilot, the flight director, and the autothrottle of the aircraft for making automatic corrections in flight path.
Claim 21
Dependent Claim 38 words
The system as defined in claim 19, wherein said onboard performance management system computer is in a normal autopilot altitude hold and the autothrottle controls speed according to a cruise option used when engaged in a cruise mode.
Claim 22
Dependent Claim 35 words
The system as defined in claim 20, wherein said onboard performance management system computer biases the normal autopilot altitude hold to permit an altitude drift of plus or minus 120 feet to minimize throttle hunt.
Claim 23
Dependent Claim 19 words
The system as defined in claim 21, wherein said onboard control display unit further includes an onboard pilot readout.
Claim 24
Dependent Claim 50 words
The system as defined in claim 22, wherein said onboard pilot readout is an electronic CRT that displays a first line of alphanumeric text, a second line of alphanumeric text, and a third line of alphanumeric text which together comprise three lines of selected information which can be selectively changed.
Claim 25
Dependent Claim 35 words
The system as defined in claim 23, wherein said onboard control display unit further includes a first onboard display line switch to select said first line of alphanumeric text for data entry and text change.
Claim 26
Dependent Claim 35 words
The system as defined in claim 24, wherein said onboard control display unit further includes a second onboard display line switch to select said second line of alphanumeric text for data entry and text change.
Claim 27
Dependent Claim 35 words
The system as defined in claim 25, wherein said onboard control display unit further includes a third onboard display line switch to select said third line of alphanumeric text for data entry and text change.
Claim 28
Dependent Claim 44 words
The system as defined in claim 26, wherein said onboard pilot keyboard consists of 10 keys and permits data insertion onto a selected one of said first line of alphanumeric text, said second line of alphanumeric text, and said third line of alphanumeric text.
Claim 29
Dependent Claim 19 words
The system as defined in claim 27, wherein said onboard control display unit further includes an onboard insert key.
Claim 30
Dependent Claim 35 words
The system as defined in claim 28, wherein said onboard insert key is pressed to enter said first line of alphanumeric text, said second line of alphanumeric text, and said third line of alphanumeric text.
Claim 31
Dependent Claim 47 words
The system as defined in claim 29, wherein said onboard insert key illuminates when pressed and is extinguished when said first line of alphanumeric text, said second line of alphanumeric text, and said third line of alphanumeric text are entered into said onboard performance management system computer.
Claim 32
Dependent Claim 39 words
The system as defined in claim 30, wherein said onboard control display unit further includes an onboard climb light, an onboard cruise light, and an onboard descent light to indicate flight mode of said onboard performance management system computer.
Claim 33
Dependent Claim 29 words
The system as defined in claim 31, wherein said onboard control display unit further includes an onboard climb key to display climb data and permit insertion of climb commands.
Claim 34
Dependent Claim 30 words
The system as defined in claim 32, wherein said onboard control display unit further includes an onboard cruise key to display cruise data and permit insertion of cruise speed commands.
Claim 35
Dependent Claim 31 words
The system as defined in claim 33, wherein said onboard control display unit further includes an onboard descent key to display descent data and permit insertion of decent rates and speeds.
Claim 36
Dependent Claim 34 words
The system as defined in claim 34, wherein said onboard control display unit further includes an onboard planning key to display planning data and permit configuration selection, preflight data insertion and step climb data.
Claim 37
Dependent Claim 26 words
The system as defined in claim 35, wherein said onboard control display unit further includes an onboard status light that indicates performance management system computer malfunction.
Claim 38
Dependent Claim 32 words
The system as defined in claim 36, wherein said onboard control display unit further includes an onboard clear key to clear erroneous data if the onboard insert key has not been pressed.
Claim 39
Dependent Claim 30 words
The system as defined in claim 37, wherein said onboard control display unit further includes an onboard forward back slew switch to cycle additional data onto said onboard pilot readout.
Claim 40
Dependent Claim 28 words
The system as defined in claim 38, wherein said onboard control display unit further includes an onboard test switch to produce uniform squares on said onboard pilot readout.
Claim 41
Dependent Claim 35 words
The system as defined in claim 39, wherein said onboard inertial navigation system when activated by said onboard pilot keyboard, produces an aiming signal for aiming said onboard weather radar and said onboard infrared probe.
Claim 42
Independent Claim 500 words
A method of using an onboard aircraft flight optimization system, comprising the steps of: a) pressing manually a first onboard display line switch of an onboard control display unit of said onboard aircraft flight optimization system; b) entering manually, via an onboard pilot keyboard of said onboard control display unit, a selected N, S, E, or W coordinates of a remote position for which routing analysis is desired into an onboard performance management system computer of said onboard aircraft flight optimization system; c) appearing automatically said selected N, S, E, or W coordinates of said remote position as a first line of alphanumeric text on an onboard pilot readout of said onboard control display unit; d) pressing manually a second onboard display line switch of said onboard control display unit; e) entering manually, via said onboard pilot keyboard, a selected flight level altitude of said remote position for which routing analysis is desired into said onboard performance management system computer; f) appearing automatically said selected flight level altitude of said remote position as a second line of alphanumeric text on said onboard pilot readout; g) instructing automatically, via said onboard performance management system computer, an onboard inertial navigation system of said onboard aircraft flight optimization system to produce an aiming signal; h) receiving automatically said aiming signal by a weather radar of said onboard aircraft flight optimization system and an onboard infrared probe of said onboard aircraft flight optimization system; i) aiming automatically said onboard weather radar and said onboard infrared probe towards said remote position for which routing analysis is desired; j) determining automatically a remote wind measurement at said remote position by said onboard weather radar and said onboard inertial navigation system; k) sending automatically said remote wind measurement to said onboard performance management system computer; l) determining automatically a remote temperature measurement at said remote position by an onboard infrared probe of said onboard aircraft flight optimization system; m) sending automatically said remote temperature measurement to said onboard performance management system computer; n) displaying automatically said remote wind measurement and said remote temperature measurement as a third line of alphanumeric text of said onboard pilot readout; o) determining a local temperature measurement by an onboard temperature probe of said onboard aircraft flight optimization system; p) sending automatically said local temperature measurement to said onboard performance management system computer; q) determining a local wind measurement by said onboard inertial navigation system; r) sending automatically said local wind measurement to said onboard performance management system computer; s) comparing automatically, by said onboard management system computer, said remote wind measurement with said local wind measurement which are automatically updated every 50 nautical miles to seek and determine a most efficient cruise level having least head wind and turbulence; t) comparing automatically, by said onboard performance management system computer, said remote temperature measurement with said local temperature measurement which are automatically updated every 50 nautical miles; and u) determining automatically a most efficient cruise level within bounds of fuel freeze point.
Claim 43
Independent Claim 500 words
A method of using an onboard aircraft flight optimization system, comprising the steps of: a) pressing manually a first onboard display line switch of an onboard control display unit of said onboard aircraft flight optimization system; b) entering manually, via an onboard pilot keyboard of said onboard control display unit, a selected N, S, E, or W coordinates of a remote position for which routing analysis is desired into an onboard performance management system computer of said onboard aircraft flight optimization system; c) appearing automatically said selected N, S, E, or W coordinates of said remote position as a first line of alphanumeric text on an onboard pilot readout of said onboard control display unit; d) pressing manually a second onboard display line switch of said onboard control display unit; e) entering manually, via said onboard pilot keyboard, a selected flight level altitude of said remote position for which routing analysis is desired into said onboard performance management system computer; f) appearing automatically said selected flight level altitude of said remote position as a second line of alphanumeric text on said onboard pilot readout; g) instructing automatically, via said onboard performance management system computer, an onboard inertial navigation system of said onboard aircraft flight optimization system to produce an aiming signal; h) receiving automatically said aiming signal by a weather radar of said onboard aircraft flight optimization system and an onboard infrared probe of said onboard aircraft flight optimization system; i) aiming automatically said onboard weather radar and said onboard infrared probe towards said remote position for which routing analysis is desired; j) determining automatically a remote wind measurement at said remote position by said onboard weather radar and said onboard inertial navigation system; k) sending automatically said remote wind measurement to said onboard performance management system computer; l) determining automatically a remote temperature measurement at said remote position by an onboard infrared probe of said onboard aircraft flight optimization system; m) sending automatically said remote temperature measurement to said onboard performance management system computer; n) displaying automatically said remote wind measurement and said remote temperature measurement as a third line of alphanumeric text of said onboard pilot readout; o) determining a local temperature measurement by an onboard temperature probe of said onboard aircraft flight optimization system; p) sending automatically said local temperature measurement to said onboard performance management system computer; q) determining a local wind measurement by said onboard inertial navigation system; r) sending automatically said local wind measurement to said onboard performance management system computer; s) comparing automatically, by said onboard management system computer, said remote wind measurement with said local wind measurement which are automatically updated every 50 nautical miles to seek and determine a most efficient cruise level having least head wind and turbulence; t) comparing automatically, by said onboard performance management system computer, said remote temperature measurement with said local temperature measurement which are automatically updated every 50 nautical miles; and u) determining automatically a most efficient cruise level within bounds of fuel freeze point.
Claim 44
Dependent Claim 50 words
The method as defined in claim 41; further comprising the step of feeding automatically said most efficient cruise level, by said onboard performance management system computer, to an onboard autopilot of said onboard aircraft flight optimization system and an autothrottle of said onboard aircraft flight optimization system for automatic execution.
Claim 45
Dependent Claim 20 words
The method as defined in claim 42; further comprising the step of displaying said most efficient cruise level for inspection.
Claim 46
Dependent Claim 70 words
The method as defined in claim 43; further comprising the step of programming an onboard clear air turbulence computer of said onboard aircraft flight optimization system to automatically determine when said onboard weather radar detects an atmospheric refraction rate indicative of clear air turbulence and to also automatically determine when the remote temperature measurement is different than that of the jet stream which is also indicative of clear air turbulence.
Claim 47
Dependent Claim 27 words
The method as defined in claim 44; further comprising the step of illuminating an onboard clear air turbulence computer alert by said onboard clear air turbulence computer.

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2000-03-24 2000-09-23 2001-03-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2004-03-24 2004-09-23 2005-03-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2008-03-24 2008-09-23 2009-03-25 $7700.00 Window Closed / Lapsed

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