Calibration for the Sensitivity Matrix of the Collins Strain Gauge ...

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DSTO-TN-05832. Calibration Methodology and Details2.1 Collins Internal Strain-Gauge BalanceThe balance to be calibrated is the Collins internal strain-gauge balance that wasdesigned and manufactured in 1966. It is a six-component balance and it has parallelend-fitting attachments as shown in figure 1.Parallel End FittingsFigure 1: Collins Internal Strain-Gauge BalanceThe design load limits of the balance are given in Table 1.Table 1: Design load limits of the Collins internal strain gauge balance2.2 Axis SystemLoad ComponentAxial force, F xSide force, F yNormal force, F zRoll moment, M xPitch moment, M yYaw moment, M zDesign limit890 N (200 lb)1557 N (350 lb)3114 N (700 lb)339 Nm (250 lb.ft)271 Nm (200 lb.ft)136 Nm (100 lb.ft)The orthogonal axis system used for the calibration is shown in Figure 2 with the origindefined at the geometric centre of the balance. This axis system is defined to be fixedwith the balance, with F x along the longitudinal axis, positive forward. F y is in the2
DSTO-TN-0583horizontal plane of the balance, positive to starboard. F z axis is in the balance plane ofsymmetry, positive downward.Sting endmodel endF yM yM zM xF zF xFigure 2: Axes SystemThe moments, M x (roll), M y (pitch), and M z (yaw), are defined by the right-hand screwrule along the respective axes, as shown in Figure 2.3
Page 3: Published byDSTO Platforms Sciences
Page 7: AuthorsAdam H. BlandfordAir Vehicle
Page 11: NomenclatureefsexyzF xF yF zM xM yM
Page 16 and 17: DSTO-TN-05832.3 Previous Calibratio
Page 18 and 19: DSTO-TN-05832.5 Manual Calibration
Page 20 and 21: DSTO-TN-0583Knife-edgeAdjustmentScr
Page 22 and 23: DSTO-TN-05833.2 Calibration Data Re
Page 24 and 25: DSTO-TN-05833.4 Statistical Analysi
Page 26 and 27: DSTO-TN-0583Appendix A: Zero Correc
Page 28 and 29: DSTO-TN-0583Zero Corrected Data Res
Page 34 and 35: DSTO-TN-0583Capability Development
Page 36 and 37: DSTO-TN-0583INFORMATION EXCHANGE AG

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