tiny, tiny amount of thrust during large, large amounts of time = enormous amounts of propulsion...

I know article is awful, sorry about that; submited only just because I wanted to read more comments about EMDrives on HN as I think they are cool; and the way HN works old threads are never seen again by most users...

haha, no need to apologise, this site is full of educated people who make up their own mind. I think I snapped a little with my comment (mid way building an iPhone App so stressed) Apologies.

Paper cited by article does not confirm it works: "Our test compaign therefore cannnot confirm nor refute the claims of the EMDrive but intends to independantly assess possible side-effects in the measurement methods used so far"

http://forum.nasaspaceflight.com/index.php?topic=38577.msg14...

Wondering why didn't NASA send a EMDrive to space already and just see if it works or not on real conditions instead of testing it on a laboratory?

I imagine the cost coupled with the timeline of other experiments. It's certainly not a trivial thing to do.

https://en.wikipedia.org/wiki/RF_resonant_cavity_thruster http://forum.nasaspaceflight.com/index.php?topic=39004.0