Fig 1.
Schematic of K1 shock tunnel.
Table 1.
Test flow condition for drag measurements.
Fig 2.
Typical measured pressure histories in K1 shock tunnel experiment.
Fig 3.
(a) Side view, (b) Top view.
Fig 4.
Schematic of the MST setup.
Fig 5.
Schematic of the SWT setup.
Fig 6.
Calculated static pressure contours.
(a) FFT, (b) MST, (c) SWT.
Fig 7.
Dynamic calibration schematic and results.
(a) MST, (b) SWT.
Fig 8.
Drag coefficient acquisition using the FFT.
Fig 9.
Drag coefficient acquisition using the MST and the SWT.
Fig 10.
Captured images of the free-flying test model in the FFT.
(a) Axial and Pitch directions, (b) Axial and yaw directions.
Fig 11.
Corner detection results of the free-flying model in the FFT.
(a) Typical detected corners, (b) Cumulative displacements.
Fig 12.
Drag coefficient measurements using the MST.
(a) Measured acceleration, (b) Dynamic response function of the MST for 4.0 ms, (c) Recovered drag coefficient histories.
Fig 13.
Drag coefficient measurements using the SWT.
(a) Measured strain, (b) Dynamic response function of the SWT for 4.0 ms., (c) Recovered drag coefficient histories.
Table 2.
Uncertainty analysis of the drag coefficient measurements.
Table 3.
Logarithmic size factor and flow establishment time of the present work.
Fig 14.
Range of size factor and flow establishment time for each technique.
The FFT data obtained from Refs. [6, 10, 11, 48–50]; the MST data obtained from Refs. [7, 12, 13, 22, 24, 51, 52]; the SWT data obtained from Refs. [8, 9, 15, 22, 43–45, 53].