Chris,Spent the last hour reading this wonderful article (sitting in Regents Park!) . Love the engineering and the physics and looking forward to seeing this technology used in the future. Great work by you and the team as NSF.
Epic article! I’m really looking forward to the tests...
18.Q. How can the EmDrive produce enough thrust for terrestrial applications?A. The second generation engines will be capable of producing a specific thrust of 30kN/kW. Thus for 1 kilowatt (typical of the power in a microwave oven) a static thrust of 3 tonnes can be obtained, which is enough to support a large car. This is clearly adequate for terrestrial transport applications.The static thrust/power ratio is calculated assuming a superconducting EmDrive with a Q of 5 x 109. This Q value is routinely achieved in superconducting cavities.Note however, because the EmDrive obeys the law of conservation of energy, this thrust/power ratio rapidly decreases if the EmDrive is used to accelerate the vehicle along the thrust vector. (See Equation 16 of the theory paper). Whilst the EmDrive can provide lift to counter gravity, (and is therefore not losing kinetic energy), auxiliary propulsion is required to provide the kinetic energy to accelerate the vehicle.
I've been binging on emDrive papers, theorys, and forum banter for the past few days. This is truly exciting stuff. We may be on the cusp of new physics and new possibilities. Many thanks to those who are making all this possible, and thanks for taking time to share it all with us on the forums.I would like to throw out one question on the subject. The paper linked at the top of this thread, along with most of the forum discussions regarding possible emDrive applications have been focused on space travel. But wouldn't it be possible to use emDrives terrestrially as well? Think helicopters with no downdraft, levitating cars or trains. Heck, why not a emDrive SSTO vehicle? Are these concepts within the realm of possibility?