Measurement of Canard Wakes
Abstract
This technical note consists of two separate papers. The first covers the manufacture and calibration of miniature seven hole probes. The second paper covers the flow field data collection and presentation. Together, the two papers describe the entire process developed to quickly and economically measure the flow field properties in canard model wakes. The first paper describes a method for measuring local direction and total and static pressures of a flow by means of a fixed probe, provided that the local air flow does not make an angle of more than 80 degrees with the axis of the probe. Rapid surveys of the wakes formed behind variously-configured lifting body models during wind tunnel testing require such a probe. The probe is easily manufactured from standard- sized tubing materials. The power series calibration method used with the probe results in explicit polynomial expressions for the desired aerodynamic properties. The calibration method is easily programmed on a data acquisition system. This paper includes an example of a complete incompressible calibration and discusses a logical method for extending the calibration technique to compressible flows.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 02, 1981
- Accession Number
- ADA095063
Entities
People
- G. Sisson
- R. Crandall
Organizations
- United States Air Force Academy