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by Aero
Mon Sep 15, 2014 10:59 pm
Forum: General
Topic: Orbital math question
Replies: 14
Views: 2408

Re: Orbital math question

As a waypoint to deep space, equatorial makes good sense. When on the way to the Moon, Mars or even most GEO and Lagrange points, ISS is out of the way. That orbit was only chosen so it would fly over Russian monitoring sites and if the Russians really leave in 2015 as they've been saying the past ...
by Aero
Mon Sep 15, 2014 5:50 pm
Forum: General
Topic: Orbital math question
Replies: 14
Views: 2408

Re: Orbital math question

I looked a little further. ISS orbital decay compensation will be needed. Orbital decay is 2 km/month which is 7.716E-07 m/s and requires a constant thrust of 0.35 N. That's about 4 times more thrust than my earlier number calculated to change the inclination. http://en.wikipedia.org/wiki/Internatio...
by Aero
Sun Sep 14, 2014 6:46 am
Forum: General
Topic: Orbital math question
Replies: 14
Views: 2408

Re: Orbital math question

Yes well, there's little reason to thrust as the orbit crosses the equator, and thrust at the extremes of the orbit farthest from the equator are the most efficient. ... That's backwards. You want to thrust as you cross the equator, and have the most velocity not parallel to your desired final vect...
by Aero
Wed Aug 27, 2014 8:09 pm
Forum: News
Topic: SpaceX News
Replies: 2276
Views: 475923

Re: SpaceX News

SpaceX has decided to postpone tomorrow's flight of AsiaSat 6. We are not aware of any issue with Falcon 9, nor the interfaces with the Spacecraft, but have decided to review all potential failure modes and contingencies again. We expect to complete this process in one to two weeks. The natural que...
by Aero
Tue Aug 19, 2014 4:08 pm
Forum: News
Topic: EM Drive
Replies: 693
Views: 253513

Re: EM Drive

I'll bet there was a money issue in there somewhere.
by Aero
Sun Aug 17, 2014 1:41 am
Forum: News
Topic: EM Drive
Replies: 693
Views: 253513

Re: EM Drive

Well is it possible to drive more than one EM Thruster having different resonate frequencies with the same magnetron? And still get reasonable drive power to each thruster.
by Aero
Fri Aug 15, 2014 3:31 am
Forum: News
Topic: EM Drive
Replies: 693
Views: 253513

Re: EM Drive

Speaking of lasers - How small would the thruster cavity need to be to resonate at light wavelength/frequency? Wouldn't that be just a little difficult to instrument? @ Carl White - Remember that the thrust was measured in the axial direction from the big end to the small end. I don't see hot air ha...
by Aero
Fri Aug 15, 2014 12:21 am
Forum: News
Topic: EM Drive
Replies: 693
Views: 253513

Re: EM Drive

Quoting from the professional English translation of the Chinese paper, http://www.emdrive.com/yang-juan-paper-2012.pdf Using a microwave network analyzer and spectrum analyzer for measurement, it was discovered that this experiment's frustum microwave resonator has an extremely narrow resonant freq...
by Aero
Thu Aug 14, 2014 9:35 pm
Forum: News
Topic: EM Drive
Replies: 693
Views: 253513

Re: EM Drive

Aero, snip - So much for 10's of kW from 10 or 20 oven magnetrons. Without a bunch of field control coils, band pass filters, a scope or scopes and limited frequency drift ... well the list goes on. A lot will depend on the actual physics behind the anomaly. If any. The physics might be due to the ...
by Aero
Wed Aug 13, 2014 1:41 am
Forum: News
Topic: EM Drive
Replies: 693
Views: 253513

Re: EM Drive

I found this very readable and informative paper on Casimir force. I recommend it highly. http://www.phys.lsu.edu/~jdowling/PHYS7353/lectures/Milonni92.pdf Did you ever wonder why liquid helium climbs the wall of a beaker? The "How" is explained in this paper. I doubt that helium has ever ...
by Aero
Tue Aug 12, 2014 6:39 pm
Forum: News
Topic: EM Drive
Replies: 693
Views: 253513

Re: EM Drive

Tom Go for it. Maybe dirty input power will give a stronger signal - No one knows. The key will be detecting a force, then eliminating known error modes by evaluating the cause of that force. Ultimately this process will likely lead to characterizing the input power but the first milestone is to mea...
by Aero
Mon Aug 11, 2014 2:34 am
Forum: News
Topic: EM Drive
Replies: 693
Views: 253513

Re: EM Drive

Well Tom, as you are proven to be a "Spark," maybe you would shoot a spark in a few directions to see if something ignites, or has ignited? But then I guess you might be reluctant to divert effort from successful experimentation, fusors, to something which may never actually work, EM Thrus...
by Aero
Mon Aug 11, 2014 1:39 am
Forum: News
Topic: em drive
Replies: 75
Views: 20860

Re: em drive

Reading up on the Casimir effect I came across a field named stochastic electrodynamics. It seems to be a disputed area like the EM Drive but also might be pertinent. http://en.wikipedia.org/wiki/Stochastic_electrodynamics I was reading up on the Casimir effect because I wonder what happens to the C...
by Aero
Fri Aug 08, 2014 11:52 pm
Forum: News
Topic: EM Drive
Replies: 693
Views: 253513

Re: EM Drive

We saw that high school students can make operable fusors. How much more complicated would it be to make an EM thruster? How did it come about that HS students started making fusors for their science projects? Was it Tom going around giving talks to science students and telling them how to make one?...
by Aero
Fri Aug 08, 2014 7:29 pm
Forum: News
Topic: em drive
Replies: 75
Views: 20860

Re: em drive

Can we discover the schedule for verification testing at other Labs? Do we know the high level protocol? Do they plan one device going round-robin to the other labs in sequence, or will they make 3 or more devices and send them out to the Labs? If I were designing the verification program, I would m...

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