Patent ID: 9574901
Date: 2017-02-21
CPC Classifications: B64D,G01C

Claim:
1. A device for displaying flight characteristics of an aircraft to a crew of the aircraft comprising: a display for the selective display of flight characteristics of the aircraft, as a function of a state of credibility assigned to measurements from sensors of the aircraft, the sensors comprising static pressure, total pressure and angle-of-attack sensors of the aircraft, the state of credibility being determined by an analytical surveillance test verifying whether an equation, involving measurements from the static pressure, total pressure and angle-of-attack sensors, is satisfied, the analytical surveillance test being performed by a computer, the display configured for selectively displaying: a primary set of flight characteristics comprising at least one flight characteristic coming from at least one measurement from one of the static pressure, total pressure and angle-of-attack sensors, when the measurements from the static pressure, total pressure and angle-of-attack sensors are deemed reliable, and at least one secondary set of flight characteristics, distinct from the primary set, comprising at least one secondary flight characteristic designed to replace a counterpart flight characteristic from the primary set, when the measurements from at least one sensor from among the static pressure, total pressure and angle-of-attack sensors are deemed unreliable, the secondary flight characteristic being independent of any measurement by the or each sensor deemed unreliable done when the measurements from that sensor are deemed unreliable.