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Drag force anemometer used in supersonic flow
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Fralick, Gustave C. |
| Copyright Year | 1998 |
| Description | To measure the drag on a flat cantilever beam exposed transversely to a flow field, the drag force anemometer (beam probe) uses strain gauges attached on opposite sides of the base of the beam. This is in contrast to the hot wire anemometer, which depends for its operation on the variation of the convective heat transfer coefficient with velocity. The beam probe retains the high-frequency response (up to 100 kHz) of the hot wire anemometer, but it is more rugged, uses simpler electronics, is relatively easy to calibrate, is inherently temperature compensated, and can be used in supersonic flow. The output of the probe is proportional to the velocity head of the flow, 1/2 rho u(exp 2) (where rho is the fluid density and u is the fluid velocity). By adding a static pressure tap and a thermocouple to measure total temperature, one can determine the Mach number, static temperature, density, and velocity of the flow. |
| File Size | 44039 |
| Page Count | 2 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20050180648 |
| Archival Resource Key | ark:/13960/t13n73b0x |
| Language | English |
| Publisher Date | 1998-04-01 |
| Access Restriction | Open |
| Subject Keyword | Supersonic Flow Strain Gages Cantilever Beams Drag Measurement Drag Force Anemometers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
