Responding to Mechanical Antigravity

Piezoelectric Inertia Motors—A Critical Review of History, Concepts, Design, Applications, and Perspectives

“…This and similar terms are also occasionally used for (fictional) motors creating propulsion without repulsion, thus violating Newton's third law of motion-"actio est reactio". Such motors are found in science fiction, but have also been and still are being developed [131] and applied for a patent, for example by Davis [132] and Lasch [133]. As their supposed functional principle obviously violates fundamental physical laws, there are only a few critical discussions of such motors in the literature, like those by Adams [134] and Millis and Thomas [131].…”

“…Such motors are found in science fiction, but have also been and still are being developed [131] and applied for a patent, for example by Davis [132] and Lasch [133]. As their supposed functional principle obviously violates fundamental physical laws, there are only a few critical discussions of such motors in the literature, like those by Adams [134] and Millis and Thomas [131]. It should be noted that also driving a body by using its inertia is not exclusive to inertia motors, but for example is also done in vibratory conveyors [135].…”

A Device that can Produce Net Impulse Using Rotating Masses

“…The planet gears and the spin gears are supported on the casing through the rolling bearings (211,212) and (213,214), respectively (212 and 214 are not shown in Figure 3). In this case, the planet gear (P1) is firmly fixed to the right half of the internal shaft (22) that ends to the point (6), while the planet gear (P2) is firmly fixed to the other half of the internal shaft (21) that ends to the wheel (10). Finally, the rods (4,5) are again shown together with the corresponding attached masses ('a','b'), which have been already mentioned in …”

“…During the rotation of the electric motor (M1), the masses ('a', 'b') move along a figure-eight-shaped path (shown in the right part of Figure 1), which entirely belongs to the surface of a sphere the center of which is the intersection of the horizontal axis (2) with the axis of the spin gears (9); in other words, the center of the planetic system (3). Finally, the end of the shaft (2) includes a wheel (10), while the other end is driven by the motor (M1); in this specific case through the belt (8). Also, a second electric motor (M2) is illustrated at the bottom of the frame (1), which causes the rotation of the entire frame and consequently of the shaft (2) as well as of the attached masses ('a', 'b').…”

“…However, despite the extremely high number of internet references as well as the many articles sited in popular mechanics or science fiction magazines, a very small number of scientific papers exist in the open literature. A careful search reveals an old paper in the Russian language [8], two remarks in a textbook [9], as well as a general NASA report dealing with many possible mechanical antigravity concepts (including Dean's drive) [10] and a relevant review paper [11]. Moreover, quite recently Provatidis [12] has shown that Dean's drive practically works like a catapult while a variable angular velocity can only control the smoothness of the object velocity to which the drive is attached.…”