Pendulum tests

The main question here is how to test Reactionless Torque and how we can believe the results of the tests. The answer is not easy as gravitation makes the contact between objects unavoidable and as there is no successful practice in this field since such class of devices have only been rejected however never accepted.

 

We can agree with the statement of the NASA TM-2006-214390 AIAA-2006-4913 document regarding the possible mechanical Breakthrough Propulsion assessment that the pendulum test is the only one able to provide genuine result. (In gravity conditions)

 

 

 


Here examined, a FTG working model the size of a grapefruit measuring 180 grams in weight and having its own power supply and remote itself controllably. This is called a Free Torque Generator (FTG).

 



Main test procedure consists of four steps:

 

1. The FTG is hung on a line along the axis of “Y” (Fig. 1). Result: After starting the flywheel’s rotation the whole FTG rotates continuously with a speed of 3-10 r/m due to the “Active” torque. The “Rr” and “Rt” torques are balanced by the garvitation.



2. The FTG is hung on a line along the axis of “X” (Fig. 2).

Result: After starting the flywheel’s rotation the whole FTG rotates continuously with speed of 50-100 or more r/m due to the “Rr” torque. The “Active” and “Rt” torques are balanced by the gravitation.

Note: Unlike Reaction Wheels the FTG’s rotation is caused by its flywheel’s nominal (change less) speed of rotation.

 


3. The FTG is hung on a line along the axis of “Z” (Fig. 3).

Result: After starting the flywheel’s rotation, the whole FTG rotates continuously with a speed of 3-10 r/m due to the “Rt” torque. The “Active” and “Rr” torques are balanced by the gravitation.

 



4. The FTG is hung along the probable direction of the vectors sum of the “Active” “Rr” and “Rt” torques (Fig 4).

Result: After starting the flywheel’s rotation the whole FTG rotates continuously unidirectional due to ?T Torque.

 

In all cases of a change in a direction of the flywheel’s rotation causes change of the FTG’s direction of rotation. The speeds mentioned depend on the discharging of the batteries. The rotation stops when the twisted line resists with the big torque in the opposite direction.

 


5. The FTG is coupled with a 18” steel bicycle wheel representing the load of the space vehicle (Fig. 5) having Inertia Moment of 32 000 times bigger then the Inertia Moment of the SDD Flywheel.

Result: The FTG acts during a 15-30 seconds period of time. After the flywheel is stopped it is noted that the whole system changes its state of motion.


We have at any rate three reasons to believe the pendulum test:

First: On the object taken as a closed system act in opposite directions which are the gravitational force and the pulling of the line, the object is hung and the forces are balanced.

Second: Even if the forces are not balanced the resulting force will pass through the mass centre of the object and will not generate a torque for that reason.

Third: Even if the resulting force does not pass through the mass centre of the system acting in vertical direction it can not create a torque in a horizontal plane.


 

The above experiments were demonstrated at:

 

1. The IENA 2007 innovation exhibition in Nuremberg, Germany, November 1-4, 2007

2. The GAMM 2008, 79th Annual Meeting of the International Association of Applied Mathematics and Mechanics at the University of Bremen, Bremen, Germany, 31st of March 4th of April, 2008

3. The TESD 2008, 14th International Conference organized by The Technical University of Varna Bulgaria, May 5-6, 2008

4. The “New Time” 2008 Innovation saloon Sevastopol, Ukraine, September 24-26 2008

5. The 4th WSEAS scientific conference “Control Systems”, Corfu, Greece, October 26-28, 2008.

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