Aircraft instrument
阅读：989发布：2021-12-13
专利汇可以提供Aircraft instrument专利检索，专利查询，专利分析的服务。并且An aircraft instrument utilizing a signal which represents the aircraft angle of attack, in a head-up display, to direct the pilot during the approach to a landing. The signal drives a bar in the display to indicate the touchdown point, with reference to the outside world. The angle of attack signal is pitch stabilized to improve its flyability. A signal representing a change in aircraft pitch attitude is combined with a signal representing a change in aircraft attitude caused by the pilot to distinguish wind gusts from pilot commands and the resulting signal combined with the angle of attack signal to compensate the movement of the bar for the effect of gusts on the aircraft.，下面是Aircraft instrument专利的具体信息内容。
1. In an aircraft instrument having a head-up screen for displaying indicia the position of which represents an aircraft flight path condition with respect to the outside world, signal generating means, comprising: a source of signal representing the aircraft flight path condition; means responsive to the pitch attitude of the aircraft; means connected with the pitch responsive means for generating a signal representing the change in pitch attitude of the aircraft; means responsive to said pitch change signal for distinguishing between changes in pitch attitude attributed to a wind gust and to a pilot commanded maneuver, for generating a signal representing a change in aircraft attitude attributable to a wind gust; means for combining said flight path condition and gust attributed aircraft attitude change signals; and means for utilizing said combined signals in positioning the indicia of said display.
2. The aircraft instrument of claim 1 including means for deriving a signal from the aircraft elevator position, indicating the occurrence of a pilot commanded maneuver, and means for combining the elevator position signal with the pitch change signal to identify a change in aircraft attitude attributed to a gust.
3. The aircraft instrument of claim 1 including means for deriving a signal from a vertical accelerometer, indicating the occurrence of a pilot commanded maneuver, and means for combining the vertical accelerometer signal with the pitch change signal to identify a change in aircraft attitude attributed to a gust.
4. In an aircraft instrument having a head-Up screen for displaying indicia the position of which represents an aircraft flight path condition with respect to the outside world, signal generating means, comprising: a source of signal representing the aircraft flight path condition; a vertical gyroscope responsive to the pitch attitude of the aircraft; means for deriving from said vertical gyroscope a signal representing the pitch attitude of the aircraft; means for processing said pitch signal to derive therefrom a pitch change signal representing a change in aircraft attitude attributable to a wind gust; means for combining said flight path condition and gust attributed aircraft attitude change signals; and means for utilizing said combined signals in positioning the indicia of said display.
5. The aircraft instrument of claim 4 in which said processing means includes means for establishing the steady state value of the pitch signal and means for subtracting the steady state signal from the pitch signal to derive the pitch change signal.
6. The aircraft instrument of claim 4 in which said processing means includes a filter for passing only the time varying component of said pitch signal.
7. In an aircraft instrument having a head-up screen for displaying indicia the position of which represents an aircraft flight path condition with respect to the outside world, signal generating means, comprising: a source of signal representing the aircraft flight path condition; a lag circuit connected with said source of aircraft flight path condition signal; a source of signal representing the pitch attitude of the aircraft; a source of signal representing the position of the elevator of the aircraft; means for summing said pitch and elevator position signals in one sense with said flight path condition signal, ahead of said lag circuit; means for summing said pitch and elevator position signals in the opposite sense with the signal at the output of said lag circuit, to provide combined signals representing the aircraft flight condition compensated for changes in aircraft attitude attributable to a wind gust; and means for utilizing said combined signals in positioning the indicia of said display.
8. In an aircraft instrument having a head-up screen for displaying indicia the position of which represents an aircraft flight path condition with respect to the outside world, signal generating means, comprising: a source of signal representing the aircraft flight path condition; a lag circuit connected with said source of aircraft flight path condition signal; a source of signal representing pitch attitude of the aircraft; a source of signal representing vertical acceleration of the aircraft; means for summing the pitch and vertical acceleration signals with the aircraft flight path condition signal ahead of said lag circuit; means for summing the aircraft pitch attitude signal in the opposite sense with the signal at the output of said lag circuit, to provide combined signals representing the aircraft flight condition compensated for changes in aircraft attitude attributable to a wind gust; and means for utilizing said combined signals in positioning the indicia of said display.
9. In an aircraft instrument having a head-up screen for displaying indicia the position of which represents an aircraft flight path condition with respect to the outside world, signal generating means, comprising: a source of signal representing the aircraft flight path condition; a lag circuit connected with said source of flight path condition signal; a source of signal representing the pitch attitude of the aircraft; a source of signal representing the position of the elevator of said aircraft; means for deriving from said pitch signal a pitch change signal; means for deriving from said elevator position signal an elevator movement signal; means for summing the pitch change and elevator movement signals wIth the signal at the output of said lag circuit, to provide combined signals representing the aircraft flight condition compensated for changes in aircraft attitude attributable to a wind gust; and means for utilizing said combined signals in positioning the indicia of said display.
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