| 摘要 |
A high Q microwave radiation thruster, used to accelerate a spacecraft or an airborne vehicle, comprises a tapered resonant cavity 10, with end plates 5 and 9. The endplates have internal convex and concave shapes to create a geometry such that every point on the wavefront of the propagated electromagnetic wave, within the cavity, has the same path length between the end plates. The thruster includes expanding elements 6, which control the axial length of the cavity, such that the Doppler shift, caused by an acceleration of the cavity, can be compensated by a change of axial length. The thruster also includes means of controlling the pulse length and offset frequency of the input microwave power, in response to the acceleration of the cavity. |
