An aircraft model test attitude realization device

Abstract

Provided is an achievement device of airplane model test gestures. One end of the device is connected with a joint of a wind tunnel connection mechanism, and the other end of the device is connected with a model, namely a test device is a part of a model supporting mechanism. The test device comprises a big joint, an extending section, a pre-leaning connection plate, a plurality of pin holes on the pre-leaning connection plate and four waist-shaped holes. The achievement device is characterized in that preleaning is carried out on a connection plane on the basis of a wind tunnel connection structure, high incidence test states can be easily achieved, and combination of big sideslip angle test states and the pin holes on a model cooperating face through the pre-leaning connection plate can be easily achieved. The achievement device is simple in structure, parameters are obtained through aerodynamic design or calculation, high incidence and big sideslip angle test states can be easily achieved, and simultaneously the achievement device is convenient to install and disassemble and applicable to high incidence and big sideslip angle air inlet tests of high-speed wind tunnels.

Description

technical field [0001] The invention relates to the technical field of aviation aerodynamic experiments, in particular to an aircraft model test attitude realization device for realizing the test state of a model with a large angle of attack and a large sideslip angle in a high-speed wind tunnel inlet test. Background technique [0002] An advanced engine must be matched with a machine with superior performance to form a high-performance power plant. The purpose of the inlet test is to measure the static and dynamic characteristics of the inlet and provide test data for the design of the inlet to ensure that the performance of the inlet in the entire flight envelope can meet the requirements of the engine. Otherwise, the engine will surge or stop in the air. The third-generation fighters (such as the Russian Su27 fighter and the American F15 fighter) emphasize high maneuverability and agility in close combat, such as high-speed dives, maneuvering and deceleration at high an...

AI Technical Summary

Problems solved by technology

Due to the limitation of the size of the wind tunnel and the previous test equipment, the test items cannot achieve the required high angle of attack and large sideslip angle flight angle, so how to make the aircraft model achieve the required high angle of attack and large sideslip for the test The flight angle of the angle of attack has become a key technical issue in the high angle of attack attitude test of the inlet

Images