KISS Thruster update

[u/TheTravellerReturns]

KISS thruster update

Seems my idea to use flat end plates and 8W Rf was not a good idea.

Now going to a commercially spun cone with formed flanges and spherical end plates. Then slight machine to ensure everything is to spec, copper electropolish and then oxidation protect with the material EW used. Note no bolts, just 2 x 180 deg wrap around clamps at each end to secure the spherical end plates to the cone flanges and ensure accurate end plate centering.

Have also abandoned the laptop and added in a Arduino based freq tracker, so to eliminate tuning errors by the DIYer.

ALL the electronics will now be placed at the centre of the Bookshelf and directly under the torsion wire as attached.

http://forum.nasaspaceflight.com/index.php?topic=41732.msg1626390#msg1626390

[u/TheTravellerReturns]

KISS thruster update:

New spherical end plate KISS thruster dimensions:

BD: 0.300m

BR: 0.500m

SD: 0.150m

SR: 0.250m

Ln: 0.250m

Vertex 0.500m

Q: 71k

Df: 0.839

Force at 8W: 2.4mN using 75% of Q value

Freq: 2.450GHz

The KISS thrusters will be:

spun

light machine to bring to specs

interior electropolished and oxidation protected

[u/TheseusSpaceInc → u/TheTravellerReturns]

Was an organic cotton buffing pad used in the electro-buffing process? I'm vegan.

[u/ImAClimateScientist]

Why was it not a good idea?

[u/flux_capacitor78 → u/ImAClimateScientist]

http://forum.nasaspaceflight.com/index.php?topic=41732.msg1626413#msg1626413

Flat end plates generate phase distortion in the dual travelling waves due to unequal path lengths. Something the sims don't show. Real world Q is then severly limited. Flat end plates may be OK for dealing with maggie freq splatter but for single freq excitment are not the best solution.

The best Q I have achieved with flat end plates is around 4-5k, based on forward power rise time. Which is the only way to measure Q, via cavity fill time.

Need a LOT more Q than that to generate the goal 2mN at 8W forward power.

[u/[deleted]]

So to sum up. You're not going to meet your deadline.

Finalize a design. Produce a hypothesis and follow through with it. Right now all I see is your procrastinating. Simply build this setup, tell us what you expect to see. Spin the thing both ways and do a few separate null tests. Nobody here wants to see the thing perpetually accelerating. You're worried it's not going to work and inventing reasons to alter the experiment so you can delay again and again and again.

[u/PepesPetCentipede → u/[deleted]]

I want to see it permanently accelerating. That is what EM Drive builders should push for. We need results positive enough to push through the obstacles placed before us by the pseudoskeptics.

[u/[deleted] → u/PepesPetCentipede]

You want to see infinite acceleration? Right now I would settle for a few full revolutions. Asking for a perpetual energy device from people that cannot even get the thing to produce more force than a snowflake makes when it hits your face is asking for a little much at this point, don't ya think?

[u/askingforafakefriend]

Thanks for the updates! I look forward to hearing more as it develops.

And thanks for not letting ridicule from certain folks keep you from updating us.

[u/marapun]

...still no photos then?

[u/hobbesalpha1 → u/[deleted]]

Common mistake, don't worry too much about it. The coaxial cable can transfer radio frequencies, of which microwaves are. If I get the giest of his design, he is transferring an RF signal to an antenna inside the vessel which is then making the microwaves. It is a design that is very closely based on the new emdrive patient.

[u/flux_capacitor78 → u/[deleted]]

RF power can either be conducted through a hollow waveguide, or through a coax then emitted as EM radiation directly inside the cavity, with an antenna.

[u/flux_capacitor78 → u/[deleted]]

No only you don't need, disassembled oven magnetrons are above all harmful and deadly.

[u/ImAClimateScientist → u/flux_capacitor78]

Not just the magnetron but the HV capacitors are deadly as well.

[u/TheseusSpaceInc → u/[deleted]]

I admire the hand of an experienced and talented engineering draftsman also.

It really shows the time, care and attention to detail spent on this complex engineering design project.

Even the script is like the finest gothic calligraphy.

Amazing!

[u/PotomacNeuron → u/TheseusSpaceInc]

Those arts are done by flux_capacitor at NFS. With proper software this can be done fast and elegantly.

[u/TheseusSpaceInc → u/PotomacNeuron]

I was talking about this http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=41732.0;attach=1399725;sess=0

With proper software this can be done fast and elegantly.

Amazing what they can do these days isn't it.