| 摘要 |
The invention relates to a nozzle 61 for a propulsion unit with solid charge comprising a mixing tube 7 through which passes, between an inlet section SA and an outlet section SB , a flow of combustion gas for a solid charge (3, figure 1a). The nozzle comprises a number of fins 81-84 exposed to the flow of gas between the inlet section and the outlet section. Each fin comprises a leading edge 103 orientated towards the inlet section. Each fin is mountable on the mixing tube and capable of relative rotational movement so as to be able to deflect a portion of the flow of gas thus orienting a thrust vector generated by the flow. The nozzle comprises a number of deflectors 111 attached to the mixing tube, and positioned upstream of the fins so as to at least partially protect the leading edge of the fins by deflection of a gas flow portion directed towards the leading edge. |
