FLIGHT COMPUTER

摘要

An aeronautical ruler includes, on at least the first side (2), at least one disc (3) and a second disc (4), both graded and movable for the implementation of two- variables computations, and a third graded disc (5), working with the first (3) and the second one (4), for the implementation of three-variables, and comprising at least a first window (6) for the reading of the result of a three-variables formula, derived from a certain alignment of the first (3), the second (4), and the third one (5). The ruler comprises, on the second side (12), two overlying, concentric, and sliding discs (13,14), which are properly graded and comprising of trigonometric conversion tables (14c) in order to solve, through proper alignments, the wind triangle and compute the drift angle of an aircraft. The slide ruler does not comprise transparent discs for the graphical solution of the wind triangle.