A Displacement Adjusting Mechanism for Externally Sealed Parallel Nozzles

Abstract

The invention relates to an outside-sealed displacement adjusting mechanism for a parallel-connection spray pipe, and relates to a combined engine tail spray pipe. The outside-sealed displacement adjusting mechanism for the parallel-connection spray pipe is provided with an actuator cylinder, a connecting rod, a rocker arm, a fixed hinge, a long sliding block, a long sliding block cam shaft, a spray pipe side plate, a spray pipe intermediate diaphragm, a spray pipe upper wall surface, a splitter plate and a spray pipe lower wall surface. The actuator cylinder can move left and right; the rocker arm rotates around the fixed hinge; a through hole is formed in the lower end of the rocker arm; the long sliding block cam shaft can move in the hole; a side plate slot is formed in a spray pipe side wall; a through hole is formed in the center of the slide plate slot; the long slide block can slide in the side plate slot; the length of the long sliding block is larger than the length of the through hole of the side plate slot, so that during a sliding process of the long sliding block, the sliding block can always cover the through hole of the side plate slot, and a sealing effect is achieved; the long sliding block cam shaft is arranged at positions, on two sides of the side plate, on the long sliding block; the long sliding block cam shaft on the outer side of the side plate is connected with the rocker arm through the through hole; and the long sliding block cam shaft on the inner side of the side plate is connected with the splitter plate through a splitter plate sliding chute.An air flow state of a spray pipe outlet can be improved, and better thrust performance is obtained.

Description

technical field [0001] The invention relates to a combined engine tail nozzle, in particular to an external sealing parallel nozzle displacement adjustment mechanism. Background technique [0002] Hypersonic technology has a major impact on the country's politics, military, and economy. Since the 1950s, various countries have launched a series of research programs and achieved breakthroughs in various aspects. The scramjet engine is the best power choice for hypersonic aircraft, because its structure is relatively simple, and it does not need to carry an oxidant, so it can achieve a higher flight Mach number and a longer range. Therefore, the scramjet engine has become the world's major powers. hotspots. [0003] However, the scramjet engine cannot complete the complete flight from take-off to high Mach number flight independently, and must be assisted by other types of engines to complete the process from take-off to the flight Mach number that it can start. To this end, ...

AI Technical Summary

Problems solved by technology

[0003] However, the scramjet engine cannot complete the complete flight from takeoff to high Mach number flight autonomously, and must be assisted by other types of engines to complete the process from takeoff to the flight Mach number it can start

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