Blade performance test bench for rotorcraft

Abstract

The invention discloses a blade performance test bench for a rotorcraft. The bench comprises a bench body, power system and a measurement and control system, the bench body comprise a support seat, Asupport bar and a blade test mechanism, The blade test mechanism comprises an S-shaped tension-compression force teste module, a Force Transfer Ring, a Torque Sensor, a force spindle, Speed sensors and brushless motors, an inorganic brush is connected with the paddle to be tested, one end of the force transmission spindle is fixed with a flange by a stop bolt, A brushless motor is mounted on the flange, the force transmission ring is connected with the force transmission main shaft through a rolling bearing, the force transmission ring is connected with an S-shaped tension-compression force measurement module through a force transmission rod, the torque sensor is connected with a torque rocker arm through a fish-eye joint bearing and a double-head threaded pull rod, and the torque rocker arm is installed on the force transmission main shaft through a screw. The length of the support rod and the replaceable brushless motor of the invention make the range of the measurable blades wide, and the S-shaped tension-compression force measuring module and the torque sensor can be replaced to meet different testing requirements and precision requirements.

Description

technical field [0001] The invention relates to a blade testing device, in particular to a rotorcraft blade performance testing platform. Background technique [0002] At present, rotorcraft have been widely used in aerial photography, plant protection, security and other fields, and the pulling force of the fixed-pitch blades used in them is gradually increasing, and the requirements for the comprehensive performance of the blades are also increasing. Therefore, it is particularly important to test and select the designed blade for tension, power, noise, etc. [0003] At present, the existing blade performance test bench has a six-component balance test bench for testing helicopter rotor blades. This test bench is large in size, low in precision of force measurement, and high in cost, and is not suitable for one-way blades of fixed-pitch rotorcraft. force measurement requirements, and does not have the measurement requirements of blade noise. For the test bench with blade...

AI Technical Summary

Problems solved by technology

[0003] At present, the existing blade performance test bench has a six-component balance test bench for testing helicopter rotor blades. This test bench is large in size, low in precision of force measurement, and high in cost, and is not suitable for one-way blades of fixed-pitch rotorcraft. force measurement requirements, and does not have the measurement requirements of blade noise

For the test bench with blade unidirectional force measurement, the measured blade diameter range is small, it does not meet the test requirements of high power, large diameter, wind tunnel and other environments, and the integration is low, and it also does not have the function of blade noise

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