Evaluation of a Hemispherical Head Flow Direction Sensor for Inlet Duct Measurements
Bennett, Donald L. (1975) Evaluation of a Hemispherical Head Flow Direction Sensor for Inlet Duct Measurements. Technical Report NASA TM X-3232, Research Engineering, NASA Dryden Flight Research Center.
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Abstract
A hemispherical head flow direction sensor was tested in a wind tunnel to evaluate its effectiveness for measuring dynamic duct flow direction angles of plus or minus 27 degrees. The tests were conducted at Reynolds numbers of 3.28 x 10 to the 6th power per meter (1.0 x 10 to the 6th power per foot) and 4.92 x 10 to the 6th power per meter (1.5 x 10 to the 6th power per foot) and at Mach numbers from 0.30 to 0.70. The design criteria for the probe are discussed and the wind tunnel results are presented. Three techniques for deriving flow angles are described.
| EPrint Type: | NASA Technical Memorandum |
|---|---|
| Keywords: | Hemispherical head flow direction sensor, Duct flow direction, Inlet duct measurements, Flow direction equations |
| Subjects: | (01 - 09) Aeronautics: (02) Aerodynamics |
| ID Code: | 729 |
| Deposited On: | 15 Febuary 2006 |
| Additional Information: | 24 pages. |
