Vibrations contribute to helicopter’s ride comfort. This study aimed to determine the relationship between main rotor vertical excitations and discomfort. Fifty-three participants, seated on a helicopter seat fixed to a vibration test bench, evaluated the discomfort of vertical sinusoidal vibrations using a magnitude estimation procedure. Stimuli had a frequency between 15 and 30 Hz and a level between 0.32 and 3.16 m/s². The average discomfort was shown related to vibration velocity using Steven’s power law, without any frequency dependence. The exponent depended on velocity and was 1.18 for higher velocities (approx. above 0.008 m/s) and 0.65 for velocities below that limit.

振动有助于提高直升机的乘坐舒适性。本研究旨在确定主旋翼垂直激励与不适之间的关系。53名参与者坐在固定在振动测试台上的直升机座椅上，使用幅度估计程序评估了垂直正弦振动的不适感。刺激的频率在15到30 Hz之间，水平在0.32到3.16 m / s ^2之间。根据史蒂文的幂定律，平均不适感与振动速度有关，与频率无关。指数取决于速度，较高速度（大约高于0.008 m / s）为1.18，低于该极限的速度为0.65。