| 摘要 |
1,171,705. Rockets. DYNAMIT NOBEL A.G. 21 July, 1967 [22 July, 1966], No. 33781/67. Heading F3A. A solid fuel rocket particularly for projecting depth charges has its range controlled by igniting a selected number of propellent charges and comprises a plurality of axially aligned combustion chambers, e.g. 1, 2, 3 and 4, each containing a propellent charge 8 and a gas passage 6 closed to one or more nozzles 5 by a plug 7 containing an independently ignited, igniting means 11. For igniting the propellent in chamber 1, the igniting means at the transition of chambers 1 and 2 is ignited, e.g. by electrical means, whereas, for igniting more of the propellent charges, for example those in chambers 1, 2 and 3 the igniting means at the transition of chambers 3 and 4 is ignited and the propellent gases from chamber 3 lift all the plugs 7, situated forwardly in the direction of nozzle 5, from their seats and as a result ignite the preceding charges in chambers 2 and 1 so that the propellent gases are discharged together through the nozzle 5. The passages 6 increase in diameter towards the nozzle 5 to facilitate ejection of the burnt out plugs 7. The charges 8 are protected by insulation 10 and are ignited and burn along faces 9 only. The charges in the separate chambers may be of the same or different power. |
