Maneuver margin presenting
AssigneePacer Systems, Inc.
InventorDavid Lee Green
Life of this patent
Estimating the term…
Abstract
Power required curves for ratios of helicopter weight to air density ratio form a background over which move perpendicular bars representing air speed and engine torque. The intersection of the relatively movable bars indicates which power required curve the helicopter is operating on. An area to the right and above that curve represents power margin available for maneuvering. A knob positions a mask over a portion of the background to indicate the actual maximum power limitation of the helicopter. A maximum power setting is varied according to ambient pressure and temperature. A minimum speed warning is produced by comparing air speed and engine torque. A rapid descent automatically raises the minimum speed warning.
Claims35
Maneuver margin presenting apparatus comprising moveable air speed input indicator means for presenting air speed, moveable engine power input indicator means for presenting engine power cooperating with the air speed input indicator means, and a comparator means positioned adjacent to the air speed input indicator means and the engine power input indicator means for presenting the engine power with respect to the air speed indicative of maneuver margin.
The maneuver margin presenting method comprising presenting an air speed indication on a display and presenting engine power indication on the display with relatively moveable cooperative indicators and comparing the air speed and the engine power and presenting a comparison of the engine power and air speed indications on the display to indicate maneuver margin.
The maneuver margin presenting method comprising measuring available engine power, measuring actual engine power, measuring actual air speed, comparing actual air speed with actual engine power, indicating a minimum speed warning according to a comparison of the actual air speed, the actual engine power and the available power.
Dependencies are inferred from the claim text.