Dimensions
From EM Drive
The current best-estimate for the dimensions of various test articles is here, along with the relevant experimental parameters and reported forces. Note that complete dimensions are not known in most cases, and some had to be determined via indirect methods (e.g., estimation from photographs).
Credit to Dr. Rodal for compiling these.
Description | Cavity Length (m) | bigDiameter (m) | smallDiameter (m) | rfFrequency (1/s) | Power (W) | Q | Force (mN) | Force / PowerInput (mN/kW) | Photon Rocket Force / PowerInput (mN/kW) | Multiple of Photon Rocket |
---|---|---|---|---|---|---|---|---|---|---|
Cannae Superconducting | 0.03 | 0.220 | 0.200 | 1.047*10^9 | 10.5 | 1.1*10^7 | 8-10 | 7.61.9 - 952.4 | 0.003336 | 228400 - 285500 |
Shawyer Experimental | 0.156 | 0.16 | 0.1025 | 2.45*10^9 | 850 | 5900 | 16 | 18.82 | 0.003337 | 5640 |
Shawyer Demo | 0.345 | 0.28 | 0.09613 | 2.45*10^9 | 421-1200 | 45000 | 102.30 | 80-243 | 0.003337 | 23980 - 72830 |
Brady a TM Mode | 0.2286 | 0.2794 | 0.15875 | 1.9326*10^9 | 16.9 | 7320 | 0.0912 | 5.396 | 0.003337 | 1617.2 |
Brady b TM Mode | 0.2286 | 0.2794 | 0.15875 | 1.9367*10^9 | 16.7 | 18100 | 0.0501 | 3.000 | 0.003337 | 899.12 |
Brady c TM Mode | 0.2286 | 0.2794 | 0.15875 | 1.8804*10^9 | 2.6 | 22000 | 0.05541 | 21.31 | 0.003337 | 6386.7 |
Fearn, Zachar, Woodward & Wanser | 0.2286 | 0.2794 | 0.15875 | 39300 | 170 | 22000 | 0.002 | 0.01176 | 0.003337 | 3.526 |