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Strain gauge balance development for force test on small aspect ratio flying wing high speed standard model
Author(s): 
Pages: 50-54
Year: Issue:  5
Journal: Experiments and Measurements in Fluid Mechanics

Keyword:  small aspect ratioflying wingstrain gauge balancedevelopmentsensitivity;
Abstract: There is a large difference between the longitudinal and lateral aerodynamic characteristics of a small aspect ratio flying wing aircraft,which presents a major challenge to the measurement and calibration of a strain gauge balance.According to the aerodynamic characteristics and to meet the aerodynamic test requirements of the aircraft,a specialized balance is designed by improving the combination element which is made up of sheet-beams and bar-beams.The sensitivities of the five components of the babance except for the axial force component are high enough for measurement,with the lateral components especially improved in the balance design.The lengthening thwartΠbeam is adopted as the axial force element of the balance which can reduce the interference to the axial force measurement.Longitudinal shock vibration is enforced on the load-adapter to take down it from the balance,and this is also the way to take down the test model.The balance has already passed relevant force tests in the wind tunnel.
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