Method and the device which minimize the noise which is given out when taking off and landing by the rotor aircraft

摘要

It includes the extra stage where this method is suitable to the rotor aircraft of type of specification, can use the rotor aircraft of standard, it is done while flying the noise sensor where consecutive measurement of sound level is arranged in the rotor aircraft of the aforementioned standard vis-a-vis the aforementioned rotor aircraft (1), making use of (C) in the said stage, and noise the operating range which is smaller than maximum A-weighted sound pressure level is decided because of the rotor aircraft of the said standard. Next, the operating range which after that accompanies the calm driving point and the wind at stage, is decided because of the rotor aircraft of specification on the basis of the operating range for the rotor aircraft of the said standard. Selective figure Figure 1