Flow temperature measurement

Reduction of results of С_х and C_y measurement in wind tunnels to flight conditions

Curves C_max (Re_b) , obtained at various flow turbulence levels E, are reduced to the single curve, corresponding to flight conditions (E = 0) at application of an effective Reynolds number (Re_eff)

Re_cr - critical Reynolds number of laminar-turbulent transition Re_ex - experimental Reynolds number

Selection of shape and dimensions of a drainage hole for reduction of static pressure measurement error.

Measurement error ?P = P_meas - P_real is reduced practically to zero at application of a hole countersinking with coning angle ? = 100° and dimensionless countersinking depth h/d ~ 1