It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Because Mr Shawyer is certainly still in business and I quote from his website ...
At the IAC 2014 conference in Toronto, Roger Shawyer stated that 8 sets of test data have now verified EmDrive theory. These data sets resulted from thrust measurements on 7 different thrusters, by 4 independent organisations, in 3 different countries.
The Toronto presentation can be found here: IAC14 Presentation (caution pdf.)
Applying Method of Reference 2 to Effectively Calculating Performance of Microwave Radiation Thruster
Yang Juan,Yang Le,Zhu Yu,Ma Nan
(College of Astronautics,Northwestern Polytechnica University,Xi′an 710072,China)
Microwave thrusters without propellant are a new concept. In these thrusters,microwaves are radiated into a sealed conical cavity through a waveguide, which act on the surface of the cavity and follow the contour of the
thrusters to produce thrust. The advantages of these thrusters are:
(1) Producing thrust without propellant; without erosion, wear and thermal stress from the hot exhaust gas; and at the same time increasing quality.
(2) If the microwave output power is stable, the performance of thrusters is not affected by its working environment.
(3) Existing experiments and theories show that using different structure materials, with microwave output power of 1kW, the range of thrust is 0.1–31500N.
From above mentioned, these thrusters can be used in satellites, deep space explorers and spacecraft, bringing the advantages of increasing their loading capability and operating life.
Microwave thrusters without propellant is invented by Roger Shawyer in a British company that research on satellite thrusters (SPR Ltd), he has already started the theories analysis and prototyping. Roger Shawyer has designed a conical cavity resonator, similar to the transverse wave TE mode, with a quality factor of 50,000, rectangular waveguide radiates the microwave into the resonator, using a non-resistance test turntable, the practical results show thrust produce by the resonator with the microwave output power of 300W is 86.2mN, this measurement match the calculation.
I'm skeptical of the youtube video but yes it is plausible. There have actually been three cases of it working. Chinese mimicked the original and then Nasa followed. Issue is it's not practical in gravity. Best results are outside of it... and we don't know how it really works yet either.
The current in turn generates a magnetic field at right angles to the electric field, and thereby accelerates the positive ions out of the engine via the Lorentz force – basically the same effect on which railguns are based.
originally posted by: aynock
a reply to: Cauliflower
not sure what the relevance of ion engines is
and in my experience scientists try to be as precise as possible with their terminology
There are science perspectives that the universe is, indeed, filled with plasma and a living thing, an organism on the macro scale…..
In astronomy, the interstellar medium (or ISM) is the matter that exists in the space between the star systems in a galaxy. This matter includes gas in ionic, atomic, and molecular form, dust, and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space. The energy that occupies the same volume, in the form of electromagnetic radiation, is the interstellar radiation field.
The ISM is usually far from thermodynamic equilibrium. Collisions establish a Maxwell–Boltzmann distribution of velocities, and the 'temperature' normally used to describe interstellar gas is the 'kinetic temperature', which describes the temperature at which the particles would have the observed Maxwell–Boltzmann velocity distribution in thermodynamic equilibrium. However, the interstellar radiation field is typically much weaker than a medium in thermodynamic equilibrium; it is most often roughly that of an A star (surface temperature of ~10,000 K) highly diluted. Therefore, bound levels within an atom or molecule in the ISM are rarely populated according to the Boltzmann formula (Spitzer 1978, § 2.4).
Depending on the temperature, density, and ionization state of a portion of the ISM, different heating and cooling mechanisms determine the temperature of the gas.
originally posted by: Zaphod58
a reply to: mbkennel
There was also an exact time given that a certain non-triangle craft would pass over a specific point in the world. That time was nine minutes off.