Abstract
For a conventional surface pressure measurement in a wind tunnel, the following techniques are used: the differential pressure transducer method and the pressure-sensitive paint method. The former affords high-precision results, but is expensive due to the fabrication cost. The latter has a reduced cost; however, the change in the oxygen partial pressure decreases at low speeds. In this paper, a new, low-cost method is proposed to measure the surface pressure under low-speed conditions. In this method, the surface of a model is drilled and a film is attached to the cavity. The film is deflected by the differential pressure between the inner cavity and the outer surface. This differential pressure is calculated by the deflection of the film, which, in turn, is measured by a laser displacement sensor. The measurement accuracy of the sensor depends on the reference length, which is the distance from the sensor head to the target. Three types of laser displacement sensors with reference lengths of 30 mm, 150 mm, and 400 mm were used. The results indicate that the differential pressure can be measured by two laser displacement sensors whose reference lengths are 30 mm and 150 mm. The surface reflection rate of the film and the traverse speed of the measurement were changed to determine their influence on the pressure measurement results.
| Original language | English |
|---|---|
| Title of host publication | 46th AIAA Aerospace Sciences Meeting and Exhibit |
| Publication status | Published - 2008 |
| Externally published | Yes |
| Event | 46th AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV Duration: 2008 Jan 7 → 2008 Jan 10 |
Other
| Other | 46th AIAA Aerospace Sciences Meeting and Exhibit |
|---|---|
| City | Reno, NV |
| Period | 08/1/7 → 08/1/10 |
Fingerprint
ASJC Scopus subject areas
- Aerospace Engineering
Cite this
Validation study of pressure-measurement system with laser displacement sensor and film. / Tezuka, Asei.
46th AIAA Aerospace Sciences Meeting and Exhibit. 2008. 2008-0272.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Validation study of pressure-measurement system with laser displacement sensor and film
AU - Tezuka, Asei
PY - 2008
Y1 - 2008
N2 - For a conventional surface pressure measurement in a wind tunnel, the following techniques are used: the differential pressure transducer method and the pressure-sensitive paint method. The former affords high-precision results, but is expensive due to the fabrication cost. The latter has a reduced cost; however, the change in the oxygen partial pressure decreases at low speeds. In this paper, a new, low-cost method is proposed to measure the surface pressure under low-speed conditions. In this method, the surface of a model is drilled and a film is attached to the cavity. The film is deflected by the differential pressure between the inner cavity and the outer surface. This differential pressure is calculated by the deflection of the film, which, in turn, is measured by a laser displacement sensor. The measurement accuracy of the sensor depends on the reference length, which is the distance from the sensor head to the target. Three types of laser displacement sensors with reference lengths of 30 mm, 150 mm, and 400 mm were used. The results indicate that the differential pressure can be measured by two laser displacement sensors whose reference lengths are 30 mm and 150 mm. The surface reflection rate of the film and the traverse speed of the measurement were changed to determine their influence on the pressure measurement results.
AB - For a conventional surface pressure measurement in a wind tunnel, the following techniques are used: the differential pressure transducer method and the pressure-sensitive paint method. The former affords high-precision results, but is expensive due to the fabrication cost. The latter has a reduced cost; however, the change in the oxygen partial pressure decreases at low speeds. In this paper, a new, low-cost method is proposed to measure the surface pressure under low-speed conditions. In this method, the surface of a model is drilled and a film is attached to the cavity. The film is deflected by the differential pressure between the inner cavity and the outer surface. This differential pressure is calculated by the deflection of the film, which, in turn, is measured by a laser displacement sensor. The measurement accuracy of the sensor depends on the reference length, which is the distance from the sensor head to the target. Three types of laser displacement sensors with reference lengths of 30 mm, 150 mm, and 400 mm were used. The results indicate that the differential pressure can be measured by two laser displacement sensors whose reference lengths are 30 mm and 150 mm. The surface reflection rate of the film and the traverse speed of the measurement were changed to determine their influence on the pressure measurement results.
UR - http://www.scopus.com/inward/record.url?scp=78149441342&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78149441342&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:78149441342
SN - 9781563479373
BT - 46th AIAA Aerospace Sciences Meeting and Exhibit
ER -