Gary E. Streimer - Mystic CT Leslie P. Benda - New London CT
Assignee:
The United States of America as represented by the Secretary of the Navy - Washington DC
International Classification:
G01C 2120
US Classification:
33 1SB
Abstract:
An apparatus for visualizing relative motion between two moving objects in two-dimensional plane is provided. A planar base has a first compass rose printed thereon. Rotatably attached to the center of the first compass rose is a means for indicating a present course of a first moving object relative to a true bearing indication on the first compass rose. A second moving object assembly consists of a second compass rose rotatably attached to a means for indicating a present course of the second moving object relative to a true bearing indication on the second compass rose. The true bearing indication on the second compass rose is aligned to be equivalent to the true bearing indication on the first compass rose. Attached at the centers of the first and second compass roses is a means for tethering the second moving object assembly to the first compass rose. The second compass rose is free to rotate about its center and the second moving object assembly is free to revolve in a single plane around the center of the first compass rose.