Anti-large overload combined distortion measuring rake on intake passage

Abstract

The invention belongs to the technical field of aero-engine inlet flow field measuring devices, and particularly relates to an anti-large overload combined distortion measuring rake on an intake passage. The anti-large overload combined distortion measuring rake on an intake passage is composed of a steel framework and a rubber material (1). The steel framework is a hollow structure, and composedof a rake arm (2), a mounting base (3) and measuring point outer sleeves (4). The cross section of the rake arm (2) is a U-shaped structure. The measuring point outer sleeves (4) for internally mounting sensors are distributed along the radial direction of the rake arm (2). The base (3) is an arc shape, and is provided with bolt holes connected with the mounting wall surface. A hole communicated with the hollow part of the rake arm is formed on the middle of the base. According to the anti-large overload combined distortion measuring rake on an intake passage, the steel framework of the measuring rake is formed integrally by using numerical control; a temperature and pressure sensor can be mounted in the outer sleeve to realize the multi-parameter measurement; and a threaded mount mode isadopted for the sensor to conveniently disassemble and assemble the temperature and pressure sensor, so that the utilization efficiency of the sensor is improved.

Description

technical field [0001] The invention belongs to the technical field of flow field measurement devices at the inlet of aero-engines, and in particular relates to a combined distortion measuring rake for anti-large overload inlet ports. Background technique [0002] In the flight test of the compatibility between the aero-engine and the inlet port, a measuring rake is often used to measure the pressure and temperature parameters of the engine inlet flow field by installing a measuring rake at the outlet of the inlet port. Traditional measurement rakes are often made of all-metal materials, and the metal skin is wrapped by spot welding outside the steel skeleton to form a rake body, such as "Development and Test of Air Flow Combination Measuring Rake" on page 54 of "Gas Turbine Test and Research" Volume 27, Issue 3 The measurement rake involved in the article has the following problems: 1) It is made of all metal, the measurement rake has a large weight and a high center of gra...

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Problems solved by technology

[0003] The purpose of the present invention is: to propose a combined distortion measuring rake for the anti-large overload inlet port, eliminate or improve the defects of the traditional measuring rake, to solve the problem that the traditional measuring rake is not suitable for the large overload environment such as the future carrier-based aircraft ejection and Technical Problems of Inlet Flow Field Measurement During Arrested Landing

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