EmDrive RF resonant cavity thruster Asymmetric cavity drive 1 It is worrisome for now that the main features of the EmDrive its asymmetry and the fact the asymmetric cavity is specifically shaped as a frustum for most test articles are not explicated in the main section of the article but appear later in the text as almost side notes This should be addressed The asymmetry is so important that the title of the article should perhaps be asymmetric cavity thruster 2 As already explained elsewhere cavities are resonant in principle rendering the name resonant cavity tautologous 3 RF should also be dropped as RF is generally said to be comprised between 1 and 3 GHz but the EmDrive could theoretically scale to work below and above those frequencies 4 Also already explained elsewhere drive is a little better than thruster since we re still not sure it s pushing rather than pulling 5 For the above reasons the name of the article should perhaps be asymmetric cavity drive