Large-load high-precision aerodynamic measuring device and measuring method

Abstract

The invention discloses a high-load and high-precision pneumatic force measurement device and a measurement method. An internal balance tail-supported aerial vehicle model is adopted to execute pneumatic force test in the prior art, and rising force of an aerial vehicle perpendicularly works on a cantilever type tail rod, so that the model severely shakes during the test. The high-load and high-precision pneumatic force measurement device comprises a balance and a supporting rod, wherein the balance adopts an internal balance and is connected with a balance sleeve; the supporting rod is connected with an incidence angle sliding rail mechanism, a side sliding angle mechanism connected with the incidence angle sliding rail mechanism, and a mechanism control and data acquisition device; the supporting rod is adopted to be connected with the balance and support the model; the internal balance is adopted to measure the pneumatic force of the aerial vehicle model; the balance is externally connected with a sleeve structure and is also connected with a data acquisition device; the data acquisition system obtains the pneumatic force on the model and is connected with automatic control equipment; therefore, the pneumatic force on the model can be obtained. The high-load and high-precision pneumatic force measurement device and the measurement method are used for measurement in a pressurized high-density and low-speed wind tunnel.

Description

technical field [0001] The invention relates to a large-load high-precision aerodynamic measuring device, in particular to a large-scale aircraft full-scale scale model test field. In a pressurized high-density low-speed wind tunnel, the large-load, high-reno Under several wind tunnel test conditions, the abdominal support wind tunnel test device with high test data accuracy, this device can carry out the aerodynamic measurement test of the full-scale model of the aircraft under the low-speed pressurized and large-load test conditions. Background technique [0002] In the field of scaled-down model tests of large-scale aircraft, the aerodynamic force measurement test is usually carried out by using an external balance + the belly support of the strut or an internal balance + the tail support of the strut. Among them, the aerodynamic force test of the aircraft model supported by the belly of the external balance, because the aerodynamic force of the strut exposed to the airfl...

AI Technical Summary

Problems solved by technology

Among them, the aerodynamic force test of the aircraft model supported by the belly of the external balance, because the aerodynamic force of the strut exposed to the airflow is measured by the balance, the interference of the support is large, which affects the accuracy of the measurement results; The distance between the center of the balance is relatively large, which affects the accuracy of the test results

The aerodynamic test of the aircraft model supported by the internal balance tail, because the lift of the aircraft acts vertically on the cantilevered tail strut, the model shakes severely during the test, which also affects the accuracy of the test results

Images