Talk:Directory:Emdrive (Electromagnetic Space Drive)

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Subject: [NEC-TechRev] Chinese Say They're Building 'Impossible' Space Drive

Date: September 28, 2008 2:52:31 AM PDT


I now see that a Chinese connection has made a theoretical simulation.

The article still impresses me as an unashamed advertisement disguised as

a press release. I am also negatively impressed by the FUD contained in it.

You had better give me funding, otherwise the Chinese will develop this

and use it to shoot satellite laser beams into your living room.

A satellite in space needs extremely low force to keep it in a stable


Instead of huge amounts of energy to bounce microwave energy in a tapered

waveguide, amateur radio HAM satellites have used coils of wire with

pulses to

magnetically torque the satellite, and this since many years. No thrusters,

just a very low energy budget with a genial solution.

The force on the needle of my BS-meter, slamming against the pin, is much

more than will ever be produced by this device.

It is not necessary to fly such a device in space in order to test it,

although it could fly as a test device.

Devices actually used in satellites are "space qualified" and it is a very

long and detailed process to achieve a space-qualified rating.


Bad Science

--Penny Gruber 19:00, 28 September 2008 (PDT)

Despite some early interest, the European Space Agency has dropped all funding of SPR. What SPR appears to do is selectively pick their physics. They choose relativistic calculations for part of their analysis and Newtonian for others. This kind of lousy accounting makes things like SMOTs appear to work "with additional engineering". Let the Chinese waste their resources on this something for nothing scheme.

Slashdot - Thrust from Microwaves - The Relativity Drive

Digg – Relativity Drive could make wheels and wings obsolete

Reddit - Relativity drive: The end of wings and wheels?

Hypography – Relativity drive

EmDrive on Trial

Science after Sunclips: The EmDrive Story, or How to Propel Pseudoscience

See also


Directory:Flying Cars

Directory:Gravity Motors


Repulsive gravity within the hydrogen atom


- Directory