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Comment: Re:ion engine compare? [Re:This again?] (Score 1) 430

by Tablizer (#49596791) Attached to: New Test Supports NASA's Controversial EM Drive

*without* spitting anything out.

But no known container is 100% radiation-leak-proof. Thus, energy is leaking out of the container in some form. Even heat can generate thrust, as the "Pioneer anomaly" investigation showed. I would assume they accounted for that.

But it would be cool if they discovered the lopsided chamber resulted in the conversion of microwave radiation into dark energy or dark matter, which seem difficult to measure, explaining the puzzlement.

Flying saucers: just around the corner?

Comment: Re:This again? (Score 1) 430

by Tablizer (#49596463) Attached to: New Test Supports NASA's Controversial EM Drive

Works based on fairies flying out of an engineer's butt

Does that mean we have to send that blessed engineer into space to power the probe? I'd rather "have to" send politicians. If bullsh1t turned out to be a powerful propellant, we could hook it up to the bozo's in Washington DC and visit Andromeda.

P.S. don't walk into the EMD lab wearing a red shirt until they find out how it works.

Comment: ion engine compare? [Re:This again?] (Score 1) 430

by Tablizer (#49596373) Attached to: New Test Supports NASA's Controversial EM Drive

[eliminating the need to carry propellant]...violate conservation of momentum by invoking some sort of vaguely defined quantum woo...

What are we calling "propellant"? It requires power to generate the radiation. How is this diff than say an ion engine? It needs SOME energy source, just not necessarily traditional sources such as flammable chemicals.

And as the radiation bounces around inside the Gumby-head-shaped chamber, it does lose some energy on each bounce such that the radiation generator has keep doing its job.

What's unknown is if we get "bonus" energy beyond what say an ion engine can do with the same amount of electricity.

The speculation is kind of like cold-fusion for space: direct matter-to-energy conversion without the messy side-effects such as high temperatures and dangerous radiation found in traditional nuclear reactors.

Comparing information and knowledge is like asking whether the fatness of a pig is more or less green than the designated hitter rule." -- David Guaspari

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