Practical pressure-sensitive paint measurement system for industrial wind tunnels at JAXA

Abstract

Japan Aerospace Exploration Agency (JAXA) has constructed the JAXA practical pressure-sensitive paint (PSP) measurement system for their large industrial wind tunnels. Its system and application tests were introduced. Contents of the system which included PSP paint, pressure calculation method and apparatus were described. A high accuracy pressure calculation method, a priori/in situ hybrid method, was also introduced and applied to the data processing. For validating this PSP system, an experiment using an ONERA M5 standard model was conducted in a transonic wind tunnel. PSP results represented global quantitative pressure distribution. The PSP data accuracy, 2σ, of the system compared with pressure taps was 1.9 kPa (Cp = 0.06 at M = 0.84). Then, the JAXA practical PSP measurement system was applied to the Japanese regional jet development test. Its results also represented a detailed and global flow structure on the test model. 2σ of PSP data was Cp = 0.06 at cruising condition. It was proved that the present PSP system could be applied to practical tests at a large industrial transonic wind tunnel.

Dual luminescent arrays sensor fabricated by inkjet-printing of pressure- and temperature-sensitive paints

“…On the other hand, most of the apparatuses for the TSP measurement are the same as those for the PSP measurement. The temperature correction for a symmetric model was carried out by coating PSP and TSP on the starboard-and port-side of the model surface [4,5]. Dual luminescent sensors using PSP and TSP, such as a mixture sensor [6][7][8][9][10] and a multi-layer sensor [11,12], have been proposed for the application to general asymmetric flow fields.…”

A Dual Luminescent Sensor Material for Simultaneous Imaging of Pressure and Temperature on Surfaces

“…Therefore, dual PSP/TSP formulations have found increasing interest in the past years. [12][13][14][15] In dual sensor systems, the luminescent signals of the indicators applied have to be separated in order to obtain unambiguous data. This is achieved in most cases by different optical emission filters.…”

Development of Bi-Luminophore Pressure-Sensitive Paint Systems

“…The various verification tests have been conducted, demonstrating the performance of PSP systems [3], [4]. Our PSP measurement system has been applied to at the 2m x 2m transonic wind tunnel in the development tests of regional jet-type domestic civil transport.…”

“…For the PSP/TSP combined system, each half of a model is painted by PSP and TSP, respectively [3]. Here, we have to assume that the flowfield, that is, pressure and temperature pattern on each half of a model is identical.…”