Flight instrument warning display
Embodiments are directed to flight instrument warnings that are configured to automatically adjust a low airspeed warning band on an airspeed indicator based on available torque margin and radar altimeter height. Warnings may be presented on a primary flight display or on flight instruments when a low airspeed band is entered.
1. A aircraft display, comprising:
a calculation unit configured to receive inputs from one or more aircraft systems and to determine if warnings should be displayed based on current aircraft flight conditions and aircraft propulsion system parameters; and
a display unit configured to receive input from the calculation unit and to generate graphics for a flight instrument display, wherein the graphics comprise one or more warnings indicating a low power condition during low altitude flight or low airspeed flight,
wherein the graphics comprise one or more warning bands having a plurality of segments, each segment is associated with:
a different airspeed warning zone, and each zone is defined based upon a current aircraft power available and a current aircraft height above surface, or
a different altitude warning zone, and each zone is defined based upon a current aircraft power available and a current aircraft airspeed, or
a different power warning zone, and each zone is defined based upon a current aircraft airspeed and a current aircraft height above surface.
2. The aircraft display of claim 1 , wherein the aircraft propulsion system parameters comprise one or more of mast torque, torque limit, torque margin, and engine RPM.
3. The aircraft display of claim 1 , wherein current aircraft flight conditions comprise one or more of airspeed, barometric altitude, and radar altitude.
4. The aircraft display of claim 1 , wherein the current aircraft flight conditions comprise one or more of flight phases selected from take-off, climb-out, cruise, approach, landing, autorotation, and failed engine conditions.
5. The aircraft display of claim 1 , wherein the graphics comprise one or more indicators on an airspeed display, wherein the indicators are positioned based upon an unsafe airspeed determined for a current aircraft power available and a current aircraft height above surface.
6. The aircraft display of claim 1 , wherein the graphics comprise one or more indicators on an altitude display, wherein the indicators are positioned based upon an unsafe altitude determined for a current aircraft power available and a current aircraft airspeed.
7. The aircraft display of claim 1 , wherein the graphics comprise one or more indicators on a power display, wherein the indicators are positioned based upon an unsafe available power level determined for a current aircraft airspeed and a current aircraft height above surface.
8. A method, comprising:
receiving inputs from one or more aircraft systems;
determining if warnings should be displayed based on current aircraft flight conditions and aircraft propulsion system parameters; and
generating graphics for a flight instrument display, wherein the graphics comprise one or more warnings indicating a low power condition during low altitude or low airspeed flight,
wherein the graphics comprise one or more indicators on:
an airspeed display, wherein the indicators are positioned based upon an unsafe airspeed determined for a current aircraft power available and a current aircraft height above surface; or
an altitude display, wherein the indicators are positioned based upon an unsafe altitude determined for a current aircraft power available and a current aircraft airspeed; or
a power display, wherein the indicators are positioned based upon an unsafe available power level determined for a current aircraft airspeed and a current aircraft height above surface.
9. The method of claim 8 , wherein the aircraft propulsion system parameters comprise one or more of mast torque, torque limit, torque margin, and engine RPM.
10. The method of claim 8 , wherein current aircraft flight conditions comprise one or more of airspeed, barometric altitude, and radar altitude.
11. The method of claim 8 , wherein the current aircraft flight conditions comprise one or more of flight phases selected from take-off, climb-out, cruise, approach, landing, autorotation, and failed engine conditions.
12. The method of claim 8 , wherein the graphics comprise an airspeed warning band having a plurality of segments, wherein each segment is associated with a different airspeed warning zone, and wherein each zone is defined based upon a current aircraft power available and a current aircraft height above surface.
13. The method of claim 8 , wherein the graphics comprise an altitude warning band having a plurality of segments, wherein each segment is associated with a different altitude warning zone, and wherein each zone is defined based upon a current aircraft power available and a current aircraft airspeed.
14. The method of claim 8 , wherein the graphics comprise a power warning band having a plurality of segments, wherein each segment is associated with a different power warning zone, and wherein each zone is defined based upon a current aircraft airspeed and a current aircraft height above surface.
15. A aircraft display, comprising:
a calculation unit configured to receive inputs from one or more aircraft systems and to determine if warnings should be displayed based on current aircraft flight conditions and aircraft propulsion system parameters; and
a display unit configured to receive input from the calculation unit and to generate graphics for a flight instrument display, wherein the graphics comprise one or more warnings indicating a low power condition during low altitude flight or low airspeed flight,
wherein the graphics comprise one or more indicators on an airspeed display, wherein the indicators are positioned based upon an unsafe airspeed determined for a current torque margin available and a current aircraft height above surface.