Wind tunnel test measurement system for aerodynamic performance of contra-rotating propeller fan of open-type rotor engine

Abstract

The invention discloses a wind tunnel test measurement system for aerodynamic performance of a contra-rotating propeller fan of an open-type rotor engine, and aims to solve the technical problems of working condition simulation of the contra-rotating propeller fan of the engine and respective and simultaneous measurement of the aerodynamic performance of the propeller fan under the condition of awind tunnel scaling test. The test system comprises a supporting device, a first propeller fan force measuring device, a second propeller fan force measuring device, a shell, a connecting flange, a water cooling sleeve, an attack angle mechanism, a wind tunnel, a control system and a measuring system. During a test, the wind tunnel provides a uniform flow field, the attack angle mechanism, the first propeller fan force measuring device and the second propeller fan force measuring device are controlled by the control system to realize expected model attitude and rotating speed simulation, and aerodynamic forces of the first propeller fan and the second propeller fan are respectively measured by the measuring system. The device is simple, reliable and convenient to install and operate; the test requirements of different incoming Mach numbers, propeller disc inflow angles, propeller disc rotating speeds and propeller pitch combination forms can be met; and two rotating shaft balances areadopted to realize accurate measurement of the aerodynamic performance of the double propeller fan respectively.

Description

technical field [0001] The invention relates to a wind tunnel test system, in particular to a wind tunnel test and measurement system for the aerodynamic performance of a counter-rotating propeller fan of an open rotor engine, and belongs to the technical field of test aerodynamic measurement. Background technique [0002] With the further improvement of low fuel consumption and emission requirements of aero engines and the introduction of more stringent airworthiness regulations, the application of open rotor engines in commercial aircraft and military transport aircraft has been reconsidered. Open rotor engine, also known as unducted fan engine or counter-rotating propfan engine, its thrust is generated by double-row counter-rotating propfans containing multiple wide-chord, thin-blade swept-back blades, which has both turboprop The fuel consumption rate of the engine is low and the turbofan engine is suitable for high-speed flight. The effective bypass ratio is as high as ...

AI Technical Summary

Problems solved by technology

[0004] The problem solved by the technology of the present invention is: the present invention overcomes the above-mentioned deficiencies of the prior art, and aims at the precise measurement of the aerodynamic performance of the open-rotor engine contra-rotating propfan in a wind tunnel test, and provides an open-rotor engine contra-rotating propfan aerodynamic The performance wind tunnel test and measurement system adopts the force measurement technology of the double-rotating shaft balance, which solves the technical problems of the simulation of the engine operating conditions and the simultaneous measurement of the aerodynamic performance of the counter-rotating propeller under the conditions of the wind tunnel scale test, and realizes the open-type Accurate Acquisition of Aerodynamic Performance and Propulsion Efficiency of Counter-rotating Propellers of Rotary Engines

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