METHOD OF ACTIVATING PROTECTION MEANS FOR PROTECTING AN OCCUPANT OF AN AIRCRAFT, AND AN AIRCRAFT IMPLEMENTING SAID METHOD
First Claim
1. A method of activating protection means via activator means in order to protect the physical integrity of an occupant of an aircraft during an accident, the aircraft being associated with a rectangular coordinate system comprising a longitudinal axis (X), a transverse axis (Y), and an elevation axis (Z), the method comprising the following steps:
- determining a longitudinal acceleration of the aircraft along said longitudinal axis (X), a transverse acceleration of the aircraft along said transverse axis (Y), and an elevation acceleration of the aircraft along said elevation axis (Z);
determining a longitudinal variation of a longitudinal speed of the aircraft along said longitudinal axis (X), a transverse variation of a transverse speed of the aircraft along said transverse axis (Y), and an elevation variation of an elevation speed of the aircraft along said elevation axis (Z); and
activating said protection means when, firstly the acceleration of said aircraft along a particular axis (X, Y, Z) of the system of axes of the aircraft is greater than a first variable threshold, and secondly the speed variation of the aircraft along said particular axis (X, Y, Z) is greater than a second variable threshold, the first and second variable thresholds each varying as a function of the stage of flight of the aircraft so as to be minimized during predetermined accident-prone stages of flight.
2 Assignments
0 Petitions
Accused Products
Abstract
A method of activating protection means (1) via activator means (3) in order to protect the physical integrity of an occupant of an aircraft (10) during an accident, the aircraft being associated with a rectangular coordinate system comprising a longitudinal axis (X), a transverse axis (Y), and an elevation axis (Z), in which method said protection means (1) are activated when, firstly the acceleration of said aircraft (10) along a particular axis (X, Y, Z) of the coordinate system of the aircraft (10) is greater than a first variable threshold, and secondly when the speed variation of the aircraft along said particular axis (X, Y, Z) is greater than a second variable threshold, the first variable threshold and the second variable threshold each varying as a function of the stage of flight of the aircraft (10) in such a manner as to be minimized during predetermined accident-prone stages of flight.
12 Citations
15 Claims
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1. A method of activating protection means via activator means in order to protect the physical integrity of an occupant of an aircraft during an accident, the aircraft being associated with a rectangular coordinate system comprising a longitudinal axis (X), a transverse axis (Y), and an elevation axis (Z), the method comprising the following steps:
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determining a longitudinal acceleration of the aircraft along said longitudinal axis (X), a transverse acceleration of the aircraft along said transverse axis (Y), and an elevation acceleration of the aircraft along said elevation axis (Z); determining a longitudinal variation of a longitudinal speed of the aircraft along said longitudinal axis (X), a transverse variation of a transverse speed of the aircraft along said transverse axis (Y), and an elevation variation of an elevation speed of the aircraft along said elevation axis (Z); and activating said protection means when, firstly the acceleration of said aircraft along a particular axis (X, Y, Z) of the system of axes of the aircraft is greater than a first variable threshold, and secondly the speed variation of the aircraft along said particular axis (X, Y, Z) is greater than a second variable threshold, the first and second variable thresholds each varying as a function of the stage of flight of the aircraft so as to be minimized during predetermined accident-prone stages of flight. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification