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US 4,044,709 AGranted
Omnidirectional speed cockpit display
AssigneePacer Systems, Inc.
InventorDavid L. Green
Life of this patent
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AssigneePacer Systems, Inc.
InventorDavid L. Green
Estimating the term…
An omnidirectional cockpit display has perpendicular bars independently moving across a plate for providing indications of speed in lateral, forward and rearward directions. A zero point is centered between lateral edges of the plate and is displaced vertically from the center of the plate to provide greater speed indications in a forward direction than in a rearward direction. A safe flight envelope is indicated on the plate, extending around the zero point in lateral and rearward directions and extending toward the edges of the plate in the forward flight direction. Indicator scales are mounted along edges of the plate, and pointers move along the scales to indicate vector sum of component speeds, and density altitude. Other scales and pointers indicate ground speed in orthogonal directions, while the crossbars indicate air speed in those directions. Other peripheral scales and pointers indicate directional control position, collective thrust control position, rate of climb and rate of closure. Vector sum or absolute magnitude is indicated at all times. When the absolute speed exceeds the graphic capability of the display, the vector sum can be determined by viewing the pointer scale on the left side. Safe rotor engagement and disengagement envelopes are presented as a shaded area on the plate. On-off warning flags are provided around peripheries of the plate.
Helicopter cockpit omnidirectional display comprising an indicator having a frame for mounting on an instrument panel, a window connected to the frame for viewing indicator movements, a plate mounted on the frame behind the window, a first horizontal crossbar and a second vertical crossbar positioned between the plate and the window for movement across the plate in orthogonal directions, means connected to the crossbars for independently moving the crossbars to indicate speeds in lateral directions with the vertical crossbar and in forward and rearward directions with the horizontal crossbar, and a zero center indicator on the plate, the improvements comprising a zero indication being centered horizontally on the plate and being offset vertically on the plate to provide a greater range of speed indications in a forward direction than in a backward direction.
Helicopter cockpit omnidirectional display comprising an indicator having a frame for mounting on an instrument panel, a window connected to the frame for viewing indicator movements, a plate mounted on the frame behind the window, a first horizontal crossbar and a second vertical crossbar positioned between the plate and the window for movement across the plate in orthogonal directions, means connected to the crossbars for independently moving the crossbars to indicate speeds in lateral directions with the vertical crossbar and in forward and rearward directions with the horizontal crossbar, and a zero center indicator on the plate, the improvements comprising a zero point indication on the plate at an indication of the crossbars in an at rest condition, and an envelope display for indicating limits of safe helicopter operations, the envelope display being on the plate around the zero indication and spaced laterally and in a rearward direction for a predetermined amount away from the zero point and extending outward to the edge of the plate in a forward indicating direction.
Helicopter cockpit omnidirectional display comprising an indicator having a frame for mounting on an instrument panel, a window connected to the frame for viewing indicator movements, a plate mounted on the frame behind behind the window, a first horizontal crossbar and a second vertical crossbar positioned between the plate and the window for movement across the plate in orthonormal directions, means connected to the frame and to the crossbars for independently moving the crossbars to indicate speeds in lateral directions with the vertical crossbar and in forward and rearward directions with the horizontal crossbar, and a zero center indicator on the plate, the improvements comprising first and second scales mounted between the window and the plate at perpendicularly related edges of the plate, at least one pointer mounted adjacent at least one of the scales and pointer moving means connected to the pointer independent of the crossbars to move the pointer over the scale, wherein the pointer moving means comprises summation means for indicating vectoral sum of speeds in lateral and forward and rearward directions.
Dependencies are inferred from the claim text.