Geometrical instruments – Straightedge type – Plural straightedges – relatively moveable
Patent
1998-03-19
2000-10-24
Bennett, G. Bradley
Geometrical instruments
Straightedge type
Plural straightedges, relatively moveable
33 1SD, 33456, G01C 2120, B43L 710
Patent
active
061347965
ABSTRACT:
A simple easy-to-use aircraft navigational plotter is disclosed. The device is used in conjunction with the signals and readouts received from a pair of VOR (Very high frequency Omni-directional Range) stations. A pair of plotter arms is rotatably connected to a central hub (1) and each is removably attached to a center point (11), which is part of a disc (2), that is affixed to a navigation chart over the VOR stations to be used for navigation. The attachment means of the plotter arms (4) to the center point discs (2) provides for a fit where the plotter arms each may both slide and rotate about the respective center point to which each arm is attached. The pilot of an aircraft may locate position, with respect to the VOR stations, and relative to the terrain depicted on the navigation chart being used by positioning the plotter assembly where the longitudinal centerlines of the plotter arms correspond to radials of the VOR stations that are known by tuning an aircraft VOR receiver and reading a centered course deviation pointer (24) (25). The position of the aircraft is found at the central hub, which is at the intersection of the two corresponding VOR radials, and in relation to the navigation chart.
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Altech Controls Corporation
Bennett G. Bradley
LandOfFree
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