Detonation tube structure of a rotary air-breathing pulse detonation engine

A pulse detonation and detonation tube technology, applied in mechanical equipment, intermittent injection devices, etc., can solve the problems of low fuel utilization, reduce the layout space of the detonation tube, shorten the length of the detonation tube of the detonation engine, etc. Increased reliability, favorable combustion, favorable formation and stability effects

Active Publication Date: 2018-09-18
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology adopts a rotating detonation tube structure, which can effectively shorten the length of the detonation engine detonation tube and reduce the layout space of the detonation tube, generate rotating detonation force, and improve the problem of low fuel utilization

Method used

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  • Detonation tube structure of a rotary air-breathing pulse detonation engine
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  • Detonation tube structure of a rotary air-breathing pulse detonation engine

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Embodiment Construction

[0017] The present invention will be further described now in conjunction with accompanying drawing:

[0018] combine figure 1 with figure 2 , The present invention proposes a detonation tube structure of a rotary air-breathing pulse detonation engine capable of generating rotary detonation force. figure 1 It is a structural schematic diagram of a rotary detonation tube, and the detonation tube of a rotary air-breathing pulse detonation engine includes a detonation tube (1), a fuel injection tube (2) and a spark plug (3). The detonation tube (1) is a rotating circumferential structure, and there are two detonation tubes (1), the length of which is 1 / 4 of the perimeter, and the distribution is center-symmetrical. In addition, the detonation tube (1) ) also has a section of straight pipe structure at the entrance. The two ends of the fuel injection pipe (2) are respectively connected and installed on the inner pipe wall of the straight pipe type detonation pipe at the front ...

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Abstract

The invention provides a detonation tube structure of a rotary air-breathing pulse detonation engine. The structure significantly reduces the axial distance of a detonation tube and shortens the axial length of the pulse detonation engine by the adoption of a rotary structure. The fuel injection of a fuel injection tube is vertical to the airflow direction and fuel is injected on the inner wall of the detonation tube, and therefore breakup and atomization of the fuel is facilitated, so that mixing degree of fuel and gas is improved significantly, and sufficient burning of the fuel is facilitated. After the fuel and gas are fixed, combustible gas mixture is ignited by a spark plug, the deflagration is formed, finally the detonation is formed, and therefore rotary power is generated. Because the effect of the rotating centrifugal force, there are a plurality of vortexes in combustion-gas flow, and therefore the formation and stability of the detonation is facilitated to a higher degree.

Description

technical field [0001] The invention belongs to the field of pulse detonation engines, and in particular relates to a detonation tube structure of a rotary air-breathing pulse detonation engine which utilizes detonation waves to generate thrust. Background technique [0002] The pulse detonation engine is a new concept propulsion device that uses high-temperature, high-pressure gas generated by intermittent detonation waves to generate thrust. It has the advantages of simple structure, small size, wide application range and low cost, and the thrust-to-weight ratio can reach 20. The pulse detonation engine can be used as the power of small aircraft and unmanned aerial vehicles, and can also be used as the power of propeller tip jet rotorcraft. In the future, it can also be used as a power propulsion device for military and civilian aircraft and high-altitude aircraft. [0003] The detonation tube of a traditional pulse detonation engine is basically a straight circular tube....

Claims

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Application Information

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IPC IPC(8): F02K7/02
CPCF02K7/02
Inventor 张群宋亚恒李承钰寇睿李逸飞黎超超
Owner NORTHWESTERN POLYTECHNICAL UNIV
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