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Curved-compression variable geometric gas inlet channel of rocket-based-combined-cycle engine

An air intake and engine technology, applied in the direction of machines/engines, mechanical equipment, jet propulsion devices, etc., can solve problems such as congestion and hinder the passage of incoming flow, and achieve the effect of improving performance, improving overall performance, and broadening the effective working range.

Active Publication Date: 2018-11-16
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing RBCC inlet design method, the built-in rocket support plate in the isolation section hinders the passage of incoming flow and easily leads to congestion, which aggravates the contradiction between high-efficiency compression and low-speed starting of the inlet.

Method used

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  • Curved-compression variable geometric gas inlet channel of rocket-based-combined-cycle engine

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Embodiment Construction

[0018] The present invention is a rocket-based combined cycle engine curved surface compression variable geometry inlet, such as figure 1 As shown, from front to back, it includes the intake port front body section a, the intake port inner constriction section b and the intake port isolation segment c connected in sequence; the intake port isolation segment c is provided with a connected lip cover Plate 1 and throat plate 2, the throat plate 2 includes the front throat plate 2-1 and the rear throat plate 2-2 from front to back, the front throat plate 2-1 is fixed on the body, and the rear throat plate Both the plate 2-2 and the lip cover plate 1 can slide back and forth along the side wall of the air inlet. The lip cover plate 1 and the front throat plate 2-1 are on the same straight line and parallel to the axis of the constriction section b in the intake duct; the rear throat plate 2-2 is arranged obliquely from front to back to the outside.

[0019] In order to meet the st...

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Abstract

The invention discloses a curved-compression variable geometric gas inlet channel of a rocket-based-combined-cycle engine, the curved-compression variable geometric gas inlet channel comprises a precursor section of the gas inlet channel, an inner contraction section of the gas inlet channel, and an isolation section of the gas inlet channel, which are connected in sequence from front to back; theisolation section of the gas inlet channel is provided with a lip cover plate and a throat plate which are connected with each other. The throat plate comprises a front throat plate and a back throatplate from front to back. The front throat plate is fixed on a frame, and the back throat plate and the lip cover plate can slide back and force along the side wall of the gas inlet channel. Under the premise of improving the startability of the gas inlet channel, the working performance under ejector and sub-combustion modes is effectively improved, and the performance loss of the gas inlet channel in a super-combustion mode is not caused at the same time.

Description

technical field [0001] The invention belongs to the technical field of rocket-based combined-cycle engines, and in particular relates to a curved-surface compression variable-geometry inlet of a rocket-based combined-cycle engine. Background technique [0002] The rocket-based combined power cycle (Rocket-Based-Combined-Cycle, RBCC) engine integrates the air-breathing ramjet and the rocket engine in one flow channel, taking into account the advantages of the high specific impulse of the ramjet and the high thrust-to-weight ratio of the rocket Working in a wide range of Mach numbers is likely to become the main power system of the next generation of aerospace vehicles. [0003] As the core component of the RBCC engine, the intake port is very different from the conventional engine intake port. As the most critical and core technology of RBCC inlet, wide Mach number work involves all working ranges of air-breathing engines. This requires that the RBCC inlet can realize self-...

Claims

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Application Information

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IPC IPC(8): F02C7/042
CPCF02C7/042
Inventor 秦飞梁磊谢宗齐何国强王亚军石磊魏祥庚
Owner NORTHWESTERN POLYTECHNICAL UNIV
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