Navigational display for parachutists
First Claim
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1. A method implemented by a computer for providing a display for a parachutist, comprising:
- providing to a computer coordinates of a hypothetical 3D line from a parachute deployment altitude to a target based on a prediction of wind velocities and a prediction of descent rate of the parachute at different altitudes and storing the results using a computer-readable medium in a navigation data file in the computer;
programming the computer to calculate the radii of circles around the all line at selected altitudes by multiplying the selected altitudes by a glide ratio of the parachute;
calculating the radii of circles and storing the results using a computer-readable medium in the navigation data file; and
displaying the circles at selected altitudes for the parachutist on a display device.
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Abstract
A display system for a parachutist is provided based on navigation data and calculations of locations where the parachutist should steer the parachute to increase likelihood of reaching a target. A two-dimensional representation of a navigation funnel is displayed. The display may increase situational awareness by use of color to indicate preferred positions in the navigation funnel.
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Citations
14 Claims
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1. A method implemented by a computer for providing a display for a parachutist, comprising:
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providing to a computer coordinates of a hypothetical 3D line from a parachute deployment altitude to a target based on a prediction of wind velocities and a prediction of descent rate of the parachute at different altitudes and storing the results using a computer-readable medium in a navigation data file in the computer; programming the computer to calculate the radii of circles around the all line at selected altitudes by multiplying the selected altitudes by a glide ratio of the parachute; calculating the radii of circles and storing the results using a computer-readable medium in the navigation data file; and displaying the circles at selected altitudes for the parachutist on a display device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for providing a display for a parachutist having a parachute deployment altitude and a target having a coordinate, comprising:
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gathering input data on conditions affecting a path of the parachutist; calculating coordinates of a 3D line from the target to the parachute deployment altitude based on a prediction of wind velocity and a prediction of descent rate only, assuming the parachutist does not steer the parachute; calculating the radii of circles around the 3D line at selected altitudes based on glide ratio of the parachute and altitude, to predict a navigation tunnel within which the parachutist may steer the parachute toward the 3D line before reaching the target, to produce a file of coordinates of the 3D line and the calculated radii; obtaining navigation data for the coordinates and heading of the parachutist and storing the results using a computer-readable medium; and supplying the file of coordinates of the 3D line and the calculated radii and the navigation data to a display computer, the display computer having input to a display device, to produce a display of circles having calculated radii for selected altitudes and icons representing coordinates of the target and coordinates and heading of the parachutist. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification