Double-channel graded wide-range-adjustable air inlet channel, engine and air inlet adjusting method

Abstract

The invention relates to a ramjet engine or a combined cycle engine working in a wide range, in particular to a double-channel graded wide-range-adjustable air inlet channel, an engine and an air inlet adjusting method. The double-channel graded wide-range-adjustable air inlet channel, the engine and the air inlet adjusting method are used for solving the technical problem that according to an existing wide-range-working-point ramjet engine and combined cycle engine, the performance under high Mach and the starting capacity under low Mach numbers can hardly be taken into account at the same time. The double-channel graded wide-range-adjustable air inlet channel comprises an air inlet channel top compression face, an air inlet channel compression face and an air inlet channel throat curved face which are sequentially located on the air inlet channel inner side face in an airflow direction, and a lip cover arranged on the air inlet channel outer side face. Meanwhile, the invention further provides the double-channel graded wide-range-adjustable air inlet channel engine. The double-channel graded wide-range-adjustable air inlet channel engine is a ramjet engine or a combined cycle engine, and adopts the double-channel graded wide-range-adjustable air inlet channel. Meanwhile, the invention further provides the double-channel graded wide-range-adjustable air inlet adjusting method. The double-channel graded wide-range-adjustable air inlet adjusting method is based on the double-flow-channel graded adjustable-width-range air inlet channel.

Description

technical field [0001] The invention relates to a ramjet engine or a combined cycle engine with a wide range of work, and in particular to a double-channel graded adjustable wide-range intake channel, an engine and an intake air adjustment method. Background technique [0002] With the change and development of engine technology, the demand for ramjet engines and combined cycle engines with wide speed range and high performance is becoming more and more urgent, which requires that the intake port must have better performance in a wide range of Mach numbers. At present, the conventional fixed-geometry inlet is often difficult to take into account the performance of high and low Mach numbers, and the variable-geometry inlet can greatly improve the working performance of the inlet by adjusting the shrinkage ratio of the inlet within the working range, thereby improving the performance of the engine. overall performance. For the intake port that works in a wide range, the perfo...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problem that the existing wide-range operating point ramjet engine and combined cycle engine are difficult to take into account the performance at high Mach and the starting ability at low Mach number at the same time, and provide a dual-channel graded adjustable wide-range intake port, engine and engine. air conditioning method

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