Noise suppression device of steady microjet weapon cabin

Abstract

The invention discloses a noise suppression device of a steady microjet weapon cabin. The noise suppression device comprises a steady microjet activator which comprises a chamber staying module and a jet orifice cover, wherein the jet orifice cover is provided with one row or two rows of microjet holes; the chamber staying module is internally provided with a first staying chamber and a second staying chamber which are communicated, the lower end surface of the chamber staying module is provided with an air inlet hole, and the periphery of a voltage-stabilizing gas outlet of the second staying chamber is provided with an indent closed-loop seal groove; the closed-loop seal groove is internally provided with a sealing ring, the shape and size of the jet orifice cover are matched with those of the voltage-stabilizing gas outlet, and the jet orifice cover is in sealing connection with the voltage-stabilizing gas outlet; and the two side bulge edges of the chamber staying module are fixed on the side wall of a model platform, and an air inlet of the lower end surface of the chamber staying module is connected with an air supply pipeline on the model platform. The noise suppression device provided by the invention has the advantages that the structure is simple, and noises of the weapon cabin can be effectively suppressed.

Description

technical field [0001] The invention relates to a noise suppressor for a weapon bay of an aircraft, in particular to a noise suppression device for a steady micro-jet flow weapon bay. Background technique [0002] Military aircraft typically drop / fire weapons while in flight. Modern military fighter jets generally carry weapons inside one or more weapon bays. The weapon compartment usually contains a pair of hatches, which are only opened when the weapon is dropped / launched. During the rest of the flight time, the hatch of the weapon compartment is closed to maintain the smooth aerodynamic profile of the aircraft and improve the flight performance of the aircraft, such as maneuverability and stealth. performance, low resistance performance, etc. [0003] In the flight state, when the weapon compartment is opened, a thin layer of fluid, called the free shear layer, is formed between the low-speed airflow inside the weapon compartment and the high-speed airflow outside the w...

AI Technical Summary

Problems solved by technology

[0006] 1. Due to the destruction of the smooth aerodynamic shape of the aircraft, additional resistance is generated;

[0007] 2. The spoiler needs to protrude out of the weapon compartment after the weapon compartment is opened, which requires a complex drive system and increases the structural weight;

[0008] 3. When flying Mach number Ma >1, the control effect drops sharply, or even fails

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