Frequency Dependence of Rotor's Free Falling Acceleration and Inequality of Inertial and Gravity Masses

Inertial Propulsion Devices: A Review

“…Also, to the limit of our experimental sensitivity, there is no observed asymmetrical effect or antigravity of the rotating gyroscopes as reported by Hayasaka et al [48]". Moreover, the last paper in favour of Hayasaka's theory is [58], and probably those by professor Dmitriev [59,60] (closely related papers by the same author are [61][62][63]). Recently, it has been shown that within the context of Newtonian mechanics a possible explanation for the decrease of the observed gravitational acceleration may be the change in the inclination of the gyroscope [64].…”

Free fall of a symmetrical gyroscope in vacuum

“…Remark-6: what happens when the axle of the gyroscope becomes horizontal, as for example happened in many of the experiments by Dmitriev [6][7][8]]? The answer is that the variation of the lean angle is within the interval (−0.6713, +0.3487), which is of the same order as that for θ 0 = 10 • , but the maximum value of φ is only 1 degree.…”

“…Students may have heard rumors or may have visited out-of-stream websites where it is claimed that anomalous phenomena, such as weight loss or violation of Newton's third law, can happen in rotating gyroscopes. This is a controversial topic for which more than ten peer reviewed journal and conference papers have been written so far (see, [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17], among others). Within this context, single gyroscopes have been experimentally studied since 1989 by Hayasaka and Takeuchi [1] but their theory was immediately disputed in the next year by others [9][10][11][12][13][14].…”

“…Within this context, single gyroscopes have been experimentally studied since 1989 by Hayasaka and Takeuchi [1] but their theory was immediately disputed in the next year by others [9][10][11][12][13][14]. Nevertheless, the research continued; publications in favor of gyroscopes' weight loss are [2][3][4][5][6][7][8] whereas against are [9][10][11][12][13][14][15][16][17].…”

“…These two inseparable questions could be given as homework to them, when teaching the chapter of rigid-body dynamics [21]. From the practical point of view, detailed knowledge on this issue could explain some of the previous experimental results on free fall experiments, among which some are in favour of an apparently slightly smaller gravitational acceleration [2,[6][7][8].…”