Free jet all-altitude air inlet device based on asymmetric two-arm robot

Abstract

The invention provides a free jet all-altitude air inlet device based on an asymmetric two-arm robot. The free jet all-altitude air inlet device is characterized by comprising a left side wall (1), a short arm mechanism (2), a long arm mechanism (3), a right side wall (4), a gear disc (5) and a motor (6), wherein the gear disc (5) is disposed at the joint of a test cabin and an air stabilizing chamber, one end of the motor (6) is fixed in the test cabin and is connected with the gear disc (5) through a gear, the middle of the lateral side of the gear disc (5) is provided with a rectangular hole, the left side wall (1) and the right side wall (4) are symmetrically arranged on the inner walls on the left and the right sides of the rectangular hole of the gear disc (5), the short arm mechanism (2) and the long arm mechanism (3) are disposed between the left side wall (1) and the right side wall (4) vertically, and the short arm mechanism (2) and the long arm mechanism (3) are fixed on the upper side and the lower side of the gear disc (5). An air inlet passage is formed among the left side wall (1), the short arm mechanism (2), the long arm mechanism (3) and the right side wall (4).

Description

Technical field: [0001] Wind tunnel test or high-altitude platform aerodynamic test of aero-engine. Background technique [0002] The free jet test is an important means of simulating the high-altitude inlet-engine matching test. The function of the air intake device (hereinafter referred to as the nozzle) is to make the air flow passing through the device meet the test requirements in the specified test area in the free jet test. The Mach number, total pressure, airflow angle and other parameter conditions are used to simulate the incoming flow in front of the inlet under various flight attitudes of the aircraft. The air intake device with attitude simulation is the core component to establish the free jet flow field. The quality of its design directly determines the quality of the free jet flow field, the reliability and accuracy of the free jet test data, and the quality of the free jet. test capability and operational efficiency of the module. [0003] For jet aircraft...

AI Technical Summary

Problems solved by technology

[0004] In a specific test chamber, in order to meet the needs of different types of engines for free-jet tests, the general situation is to design nozzles of different sizes according to the specific characteristics of the test object (intake port-engine) to improve the test efficiency and complete related tests. Renovation of the test bench; at the same time, this type of attitude simulation mechanism is complex, the installation space is large, and the angle of attitude simulation is limited

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