Ideality of pressure-sensitive paint. II. Effect of annealing on the temperature dependence of the luminescence

A review of pressure-sensitive paint for high-speed and unsteady aerodynamics

“…The maximum of emission spectrum is obtained at at 650 nm. The lifetime of luminescence at vacuum and atmospheric conditions (at 300 K) are 85 and 10 ms, respectively [41]. These values are much longer than the lifetimes of ruthenium complexes and pyrene derivatives (shown later (tris(4,7-diphenyl-1,10-phenanthroline) ruthenium (II) dichloride, distributed by GFS Chemical), shown in Fig.…”

“…The solubility of diatomic gas in the polymer binders is not affected by the temperature range used in the wind tunnel [41], although, in general, it depends on temperature.…”

Ideality of pressure-sensitive paint. I. Platinum tetra(pentafluorophenyl)porphine in fluoroacrylic polymer

“…Annealing the freshly painted PSP coating improves its ideality and possibly its adherence to the aluminum surface. 7 The weight average molecular weight of precipitated FIB from the synthesis described here is ͗M͘ W ϳ 109,300 Da. The number average molecular weight of precipitated FIB is ͗M͘ N ϳ 74,800 Da.…”

“…7 This is because if temperature is known, the wind tunnel ratio I(P 0 , T 0 )/I(P, T) can be multiplied by a single function g(T, T 0 ) to obtain the single function f(P, P 0 ) from which the pressure on the airfoil can be determined. For the FIB PSP described in this paper, plots of g P (T, T 0 ) over the temperature range 10°C to 50°C made at vacuum and ambient pressure are approximately the same, showing only a small deviation from ideality.…”

“…Because the SternVolmer constant (K SV , defined below) exhibits a temperature dependence, PSPs can only be ideal over a limited temperature range. 7 The original Kavandi PSP was based on a commercial mix, Genesee-197. 2 It had several problems including a slow response time, a high temperature dependence, and serious photodeterioration.…”