Anti-gravity technology by non-positive equivalent mass revealing UFO flying secrets

2022 ◽  
Author(s):  
Jiuhui Wu ◽  
Shaokun Yang
Keyword(s):  
Dynamic Simulation ◽  
External Force ◽  
Simulation Experiment ◽  
External Input ◽  
Degree Of Freedom ◽  
Zero Dynamic ◽  
Exciting Forces ◽  
Equivalent Mass ◽  
External Forces ◽  
Two Degree Of Freedom

Abstract In this paper, a novel kind of anti-gravity technology by non-positive equivalent mass of aircraft is presented to try to reveal UFO flying secrets. Starting with a two-degree-of-freedom system, it is found that the system could produce an infinite acceleration under the condition of zero dynamic equivalent mass[1], and also provide a movement opposite to the direction of the external force under the negative equivalent mass[2]. These two cases with non-positive equivalent mass[3] could both be regarded as a novel kind of anti-gravity technology[4,5], which is also verified by a designed dynamic simulation experiment. For any aircraft that can be regarded as a multi-degree-of-freedom system driven by engine or other external forces[6], the non-positive equivalent mass could be designed out once the external input including gravity and engine exciting forces is known[7]. Thus the anti-gravity technology for any aircraft could be realized, which could also be extended to matters related to flight, such as space ships, missiles, airplanes, etc[8].

Reactionless Two-Degree-of-Freedom Planar Parallel Mechanism With Variable Payload

2009 ◽  
Author(s):  
Alexandre Lecours ◽  
Cle´ment Gosselin
Keyword(s):  
Dynamic Simulation ◽  
Parallel Mechanism ◽  
Reaction Force ◽  
Simulation Software ◽  
Degree Of Freedom ◽  
Dynamic Balancing ◽  
End Effector ◽  
Planar Mechanism ◽  
Two Degree Of Freedom ◽  
Arbitrary Trajectory

A reactionless mechanism is one which does not exert any reaction force or moment on its base at all times, for any arbitrary trajectory of the mechanism. This paper addresses the static and dynamic balancing of a two-degree-of-freedom parallel planar mechanism (five-bar mechanism). A simple and effective adaptive balancing method is presented that allows the mechanism to maintain the reactionless condition for a range of payloads. Important proofs concerning the balancing of five-bar mechanisms are also presented. The design of a real mechanism where parallelogram linkages are used to produce pure translations at the end-effector is also presented. Finally, using dynamic simulation software, it is shown that the mechanism is reactionless for arbitrarily chosen trajectories and for a variety of payloads.

Analysis of Dynamic Behavior of Zigzag Groove Setback Arming Device with Two Degree of Freedom

2011 ◽  
Vol 317-319 ◽  
pp. 1739-1744 ◽  
Author(s):  
Guang Lin He ◽  
He Fei Tian
Keyword(s):  
Dynamic Behavior ◽  
Dynamic Simulation ◽  
Rocket Engine ◽  
Degree Of Freedom ◽  
Orthogonal Method ◽  
Optimum Parameters ◽  
Safety And Reliability ◽  
Two Degree Of Freedom ◽  
Spring Rigidity

Focusing on the requirements of safety and reliability of fuze setback arming device of rocket-assisted projectile, a zigzag groove setback device with two degree of freedom was designed with Inventor 6. The dynamic simulation is developed under environment of VisualNastran. The optimum parameters of up inertia-cylinder mass, down inertia-cylinder mass, up inertia-spring rigidity and down inertia-spring rigidity were tested by orthogonal method and simulated. The results indicate that this setback device can effectively differentiate setback overload in launch and impact overload at service handling; credible arming time of fuze is about 128ms when the even overload of the rocket engine is 100g; the optimum mass of up inertia-cylinder and down inertia-cylinder are respectively 3.19g and 1.41g, the optimum rigidity of up inertia-spring and down inertia-spring are respectively 32.7 N/m and 21.8 N/m.

Design and Experimental Validation of a Two-Degree-of-Freedom Force Illusion Device

2014 ◽  
Author(s):  
Nicolò Pedemonte ◽  
Frédérik Berthiaume ◽  
Thierry Laliberté ◽  
Clément Gosselin
Keyword(s):  
External Force ◽  
Parallel Mechanism ◽  
Visually Impaired ◽  
Experimental Validation ◽  
Degree Of Freedom ◽  
Haptic Device ◽  
Visually Impaired People ◽  
Impaired People ◽  
Two Degree Of Freedom

In this paper, a new hand-held haptic device that aims at producing the illusion of an external force is presented. This device is based on a planar two-degree-of-freedom parallel mechanism that can be programmed to produce the force illusion in any direction of the plane. Two tests are proposed to a group of people, in order to evaluate the device’s capabilities. The results obtained from the tests are analyzed and shown to be promising. Finally, modifications to the device are proposed in order to further improve the effectiveness of the system. The device proposed in this work is envisioned as a guidance tool for visually impaired people.

Part II: Control of a One-Degree-of-Freedom Active Hydraulic Mount

1996 ◽  
Vol 118 (3) ◽  
pp. 443-448 ◽  
Author(s):  
P. M. FitzSimons ◽  
J. J. Palazzolo
Keyword(s):  
Control Systems ◽  
External Force ◽  
Mechanical Impedance ◽  
Feedback Controller ◽  
Degree Of Freedom ◽  
High Fidelity ◽  
Hydraulic Actuator ◽  
Root Locus ◽  
The Time Domain ◽  
Two Degree Of Freedom

In the first part of this investigation, a model of an active hydraulic mount was developed using the method of conic sector bounding to capture plant nonlinearities. The purpose of the mount is to make a mass that is driven by an external force and a hydraulic actuator behave as if it were a prescribed mechanical impedance driven solely by the external force. A two-degree-of-freedom control system, that consists of a feedback controller and a prefilter, is proposed as a solution. A position-velocity-acceleration (PVA) feedback controller using classical root locus methods and an H2-optimal feedback controller are designed using the plant model. A prefilter is then used to prescribe the mechanical impedance of the mount. The performance of these control systems is investigated in the frequency domain using Robust Control Theory. Finally, numerical simulations of a high-fidelity nonlinear model are used to assess the performance of each controller in the time domain.

Reactionless Two-Degree-of-Freedom Planar Parallel Mechanism With Variable Payload

2010 ◽  
Vol 2 (4) ◽  
Author(s):  
Alexandre Lecours ◽  
Clément Gosselin
Keyword(s):  
Dynamic Simulation ◽  
Parallel Mechanism ◽  
Reaction Force ◽  
Simulation Software ◽  
Degree Of Freedom ◽  
Dynamic Balancing ◽  
End Effector ◽  
Planar Mechanism ◽  
Two Degree Of Freedom ◽  
Arbitrary Trajectory

A reactionless mechanism is one that does not exert any reaction force or moment on its base at all times, for any arbitrary trajectory of the mechanism. This paper addresses the static and dynamic balancing of a two-degree-of-freedom parallel planar mechanism (five-bar mechanism). A simple and effective adaptive balancing method is presented that allows the mechanism to maintain the reactionless condition for a range of payloads. Important proofs concerning the balancing of five-bar mechanisms are also presented. The design of a real mechanism where parallelogram linkages are used to produce pure translations at the end-effector is also presented. Finally, using dynamic simulation software, it is shown that the mechanism is reactionless for arbitrarily chosen trajectories and for a variety of payloads.

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