Abstract
For aerodynamic force measurement in shock tunnels and similar short duration aerodynamic testing facilities we have developed a novel measurement technique. Its key feature is a mounting support, which releases the test model and grips it again after a free flight duration of about 10 milliseconds. The model is equipped with small accelerometers and may contain additional installations. The short free flight allows the use of thin wires because the model travels only a few millimeters during this time. Validation experiments with a cone-cylinder of known drag coefficient show good accuracy with a response time of about half a millisecond. Pitot pressure measurement and suitable data processing allow for direct evaluation of aerodynamic coefficients in slowly changing flow.
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