Shock tunnel detonation double-driving method and device

Abstract

The invention discloses a shock tunnel detonation double-driving method, which comprises the following steps of: 1) arranging a positive detonation igniter at one end close to an explosion-releasing section, of a shock tunnel detonation driving section and arranging a reverse detonation driving igniter at the end close to a driven section, of the detonation driving section; 2) igniting by the positive detonation igniter, thereby forming a positive driving detonation wave; 3) after transmitting the positive driving detonation wave along the detonation driving section for a preset period of time, igniting by the reverse detonation driving igniter, thereby forming a reverse driving detonation wave; and 4) tearing a diaphragm arranged between the driven section and the detonation driving section by the reverse driving detonation wave and forming a motion shock wave after intersecting the positive driving detonation wave with the reverse driving detonation wave. According to the method, the diaphragm arranged between the driven section and the detonation driving section is torn by the reverse driving detonation wave, the diaphragm is more regularly torn and a diaphragm fragment is difficult to form, thereby being small in interference effect on the flowing of the formed airflow and promoting the flowing quality of the driven air.

Description

technical field [0001] The invention relates to a technique for the experimental research of an air-breathing high-speed aircraft, in particular to a shock tunnel detonation driving method and device for ground simulation equipment of a hypersonic aircraft. Background technique [0002] During the development of a hypersonic vehicle, a large number of ground simulation experiments are required to obtain data on the aerodynamic force and propulsion performance of the vehicle. The pulse-type shock tunnel is an effective ground test equipment for simulating hypersonic flight flow, and has been widely used in related research. The detonation-driven shock tunnel uses the high-temperature and high-pressure gas formed by the detonation of combustible gas to do work, forming a high-intensity shock wave to drive the driven section of the shock tunnel to simulate the hypersonic flow of the test gas in the driven section to achieve sufficient total enthalpy. . [0003] The detonation...

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Problems solved by technology

[0004] The above-mentioned positive detonation driving energy is large and the driving ability is strong, but the flow quality is affected by the Taylor sparse wave after the detonation wave, and it has a great damage to the diaphragm between the driving section and the driven section, which affects the wind tunnel. The reliability of the test; while the flow quality of the reverse detonation drive is good, the diaphragm rupture is good, but the driving ability is weaker than the forward detonation drive

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