Measuring and testing – Wind tunnel: aerodynamic wing and propeller study
Reexamination Certificate
2006-05-30
2006-05-30
McCall, Eric S. (Department: 2855)
Measuring and testing
Wind tunnel: aerodynamic wing and propeller study
C073S170020, C073S170110, C033S549000
Reexamination Certificate
active
07051586
ABSTRACT:
The invention pertains to a process for determining aerodynamic parameters of an airflow surrounding an aircraft. On the basis of at least two probes situated on the skin of the aircraft, each probe comprising means for measuring the local angle of attack (αloc i, αloc j), the process consists in determining the angle of attack (α) and/or sideslip (β) of the aircraft, as a function of the local angle of attack of each probe and of the aerodynamic field of the aircraft. The invention also pertains to a process for detecting a fault with a probe used to determine the aerodynamic parameters of the airflow surrounding an aircraft. This fault detection process consists in:determining for all the groups of two probes:the angle of attack and/or sideslip as a function of the local angles of attack and of the aerodynamic field of the aircraft,various values of the pressure coefficient of each probe as a function of the local angle of attack of each probe and of the aerodynamic field of the aircraft,the upstream infinity static pressure as a function of the pressure coefficient and of the local static pressure of one and the same probe and as a function of a measurement of the total pressure,intercomparing the values of upstream infinity static pressure, the angle of attack values and/or the angle of sideslip values.
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Choisnet Joel
Collot Lionel
Hanson Nicolas
Jenkins Jermaine
Lowe Hauptman & Berner LLP
McCall Eric S.
Thales
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