Title:
ULTRASONIC AIR DATA SENSOR
Document Type and Number:
Japanese Patent JP3817610
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To provide an airspeed measurement device for an aircraft which can perform the measurement from a low velocity region to a relatively high speed region, and can deal with a wide airflow angle; and to provide an ultrasonic air data sensor probe having no mobile parts which can realize a wind direction/velocity and air temperature measurement device for a meteorological observation at high measurement precision without requiring components at high manufacture precision.
SOLUTION: When the value of wind velocity to be measured greatly varies discontinuously, the ultrasonic air data sensor probe subtracts an integral multiple of one period of the ultrasonic wave used for the detection value, and performs the correction to the error estimation value nearest to the previous detection value. Further, by providing the combination of an ultrasonic wave transmitter and a receiver for calculating the wind velocity with redundancy, the wind velocity is calculated without using a signal most intensively influenced by inner and outer noises or a signal by the failed ultrasonic transmitter and the receiver. A support part is arranged so that a level difference is not generated between it and the surface of the ultrasonic receiver.
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Inventors:
Inokuchi, Hamaki
Application Number:
JP2003000055386
Publication Date:
June 23, 2006
Filing Date:
March 03, 2003
Export Citation:
Assignee:
NATIONAL AEROSPACE LABORATORY OF JAPAN
International Classes:
G01P5/00; G01F1/66; G01K11/24; G08C15/00; G01P5/00; G01F1/66; G01K11/00; G08C15/00; (IPC1-7): G01P5/00; G01K11/24; G08C15/00
Previous Patent: JP3817609
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