Do it yourself CLOSED SYSTEM PROPULSION APPARATUS (not iner

[wjeconsultant]

You are totally correct, it is easy to visualize if you take the time “think a little about it”, many refuse to take the time because it seem to conflict with the law of conservation of linear momentum (a big deal for many)

Please see web page wjetech.cl/start/ where I explain

[repatte]

If I understand correctly, don't know everything involved in your design. It's possible to do this because the -v(momentum that counters momentum in the desired direction.) Is rendered as harmless noise. While +v is not dissipated and imparted to the center of mass. e.g. the chamber.

[kymerajet]

Mythbusters managed to push a sailboat on all scales with a fan onboard, Im sure they faked it right? or maybe laws written hundreds of years ago are due an update. Your failing to take into account the Mass of the housing. If the mass of the container is great it will resist moving relative to an object with less mass. Now, figure in that as an object accelerates it gains mass (Physics 101) and then impart that mass into the housing in the form of kinetic energy.. and you have the above.

[kymerajet]

Mythbusters managed to push a sailboat on all scales with a fan onboard, Im sure they faked it right? or maybe laws written hundreds of years ago are due an update. Your failing to take into account the Mass of the housing. If the mass of the container is great it will resist moving relative to an object with less mass. Now, figure in that as an object accelerates it gains mass (Physics 101) and then impart that mass into the housing in the form of kinetic energy.. and you have the above.

[johnroach1]

I know what I see!!! Most of you people are not very smart!!! sorry

[johnroach1]

The max energy is positive!!! Good Job!!!

[Orionblade2003]

if it was frictionless, it wouldn't stop - it would slide off the table. You need an air table to do experiments like these with any sort of reliable data output. Think air hockey tables.

In any case, the acceleration of the little car with the propeller is less than what is required to overcome friction with the tabletop, but the impulse delivered to the end wall of the chamber is greater than the friction holding the chamber in place on the table.

[voraistos]

there would be no friction in space, so it woudn't work. Your design only works as when the fan retreats, its acceleration and force are not strong enough to make the railing move. replace the railings with empty space, and the whole thing becomes pointless. You can do this experiment by turning around on one leg using the power of the other. Now if you're standing in oil and butter instead of a shoe with good grip, you'll find it a lot more difficult to turn. I know I tried it as a kid :D

[shubhsd]

Same case. A 'closed system' will not be able to produce a net positive force required for propulsion.

Aluminium rollers are almost frictionless when moving. Static friction is considerably high. Maybe you would even get a similar result on an air hockey table too.

But it would simply not work in space. When the Fan goes forward, the casing would go backwards. After the impact the reverse would happen. The system would remain stationary.

[wjeconsultant]

Note: In the video the module is placed on aluminum rails separated by aluminum rollers (tubes) this setup permits a near frictionless surface for recording the video, unfortunately the rail assembly in not very visible on the video. A new video is in the works.

[shubhsd]

The forward movement is caused because there is static friction between the table and the 'closed system'.

In space what would happen is that the chamber and the fan inside would keep oscillating. When the fan moves forward the chamber will move backward. And after the bump, vice versa.

Net effect the 'system' will remain in the exact same position in space.

[andy372]

What if you add resistance to retropulsion?

[juraj89]

It would be really nice if it was a closed system, but it isn't, while going forward, the propeller does give momentum to the box, but it is too small to overcome the friction with the table. When it bumps the box, it's momentum is used in a much smaller space of time,and it generates a greater force, large enough to overcome friction between the box and the table, what makes the box move. Nice try anyway.

[CuerpoMuerto]

I'm so close to being a believer now... if only in-space testing was feasible. I think if you could show the same results in zero-G, you'd win a lot of people over. Keep up the good work.

[QuantumCarl]

You dumb, boy?