초록 ▼

The present invention is directed to a non-normalized aircraft angle-of-attack indicating system. An angle-of-attack vane produces a signal .alpha.' indicative of raw aircraft angle-of-attack. A pitot-static system (68) produces output signals representative of aircraft static pressure and total pre

The present invention is directed to a non-normalized aircraft angle-of-attack indicating system. An angle-of-attack vane produces a signal .alpha.' indicative of raw aircraft angle-of-attack. A pitot-static system (68) produces output signals representative of aircraft static pressure and total pressure, P.sub.s and P.sub.t, respectively. The signals .alpha.', P.sub.s and P.sub.t are fed to an air data computer (66) which correspondingly produces an aircraft actual angle-of-attack value .alpha. and a calculated Mach number, M. Configuration sensors (80) produce output signals representative of gear position, g, flap position, f, and speed brake position, sb. The signals .alpha., M, g, f and sb are fed to a display computer (76). The display computer includes a submodule (90) which utilizes a lookup table to determine a value of angle-of-attack stick shaker, .alpha..sub.ss from the values of M, g, f and sb. A second submodule (92) utilizes a lookup table to produce a second angle-of-attack reference value .alpha..sub.ref from the values g, f and sb. The display computer (76) feeds the .alpha., .alpha..sub.ss, .alpha..sub.ref signals to an angle-of-attack indicator which includes a pointer (102) which is moveable with respect to a fixed gauge (104). The .alpha. signal is used to drive the pointer (102) to indicate the aircraft's actual angle-of-attack. Bug drivers are utilized to position the first bug .alpha..sub.ss and the second bug, .alpha..sub.ref, at their appropriate positions on the opposite side of the gauge.

대표청구항 ▼

[ What is claimed is:] [1.] An aircraft non-normalized angle-of-attack indicating system comprising:a gauge having fixed position markings to indicate a predetermined range of aircraft angle-of-attack;a pointer which is predeterminedly positioning with respect to said gauge for indicating angle-of-a

[ What is claimed is:] [1.] An aircraft non-normalized angle-of-attack indicating system comprising:a gauge having fixed position markings to indicate a predetermined range of aircraft angle-of-attack;a pointer which is predeterminedly positioning with respect to said gauge for indicating angle-of-attack;pointer driver means for determining the aircraft's actual angle-of-attack and positioning said pointer in response thereto;a first bug which is moveable with respect to said gauge markings to define a first limit condition for aircraft angle-of-attack;bug driver means for determining said aircraft first limit position and positioning said first bug in response thereto;a second bug which is moveable with respect to said gauge markings to define a reference condition for aircraft angle-of-attack; andwherein said bug driver includes means for determining said aircraft angle-of-attack reference position and positioning said second bug in response thereto.