METHOD FOR MEASURING AIR DATA OF HELICOPTER

摘要

PURPOSE: An air data measuring method of a helicopter is provided to remove an oscillation phenomenon from the unknown frequency for accurately measuring accurate air data. CONSTITUTION: An air data measuring method of a helicopter comprises the following steps: analyzing the oscillation frequency included in air data; analyzing the reason which generates the oscillation frequency; analyzing the sampling rate of an air data computer; analyzing the aliasing influence by the sampling rate; doubling the sampling rate for sampling the maximum frequency over twice; and applying a low-pass filter for removing the unnecessary frequency.