METHOD AND DEVICE FOR AUTOMATICALLY ESTIMATING AT LEAST ONE SPEED OF AN AIRCRAFT

摘要

A device including a first data generating unit for determining at least one aerodynamic hinge moment of at least one control surface of the aircraft, a second data generating unit for determining a plurality of data and at least one external static pressure and a model of hinge moment coefficient, a computation unit for computing with the aid of these data at least one speed of the aircraft, namely a Mach number and/or a conventional speed, and a data transmission unit for providing this speed to a user system.

主权项

1. A method for automatically estimating at least one speed of an aircraft, during a flight of the aircraft, the method comprising, in an automatic manner and on the aircraft:
a) determining at least one aerodynamic hinge moment of at least one control surface of the aircraft; b) determining a plurality of data and at least the following data:
a static pressure external to the aircraft; anda model of hinge moment coefficient; c) computing a first speed of the aircraft; and d) providing the first speed thus computed to at least one user system,wherein step c) comprises computing a Mach number M representing a first speed of the aircraft, with an expression as follows:Ma=12γPsM2VδpChin which:
Ma is the aerodynamic hinge moment; γ is an adiabatic coefficient of the air; Ps is an external static pressure; Vδp represents a volume of the control surface; and Ch is the model of hinge moment coefficient, dependent on the Mach number M.