Unsteady transonic flow analysis for low aspect ratio, pointed wings

Unsteady linearized transonic flow analysis for slender bodies

“…Its application to unsteady flow calculations was pointed out earlier by the first author (D.D. Liu) and subsequently was adopted to the wing calculations by Kimble et al 19 and Ruo 20 (see Fig. 4b).…”

“…It is noted that further expansion of N(T,k) according to the low-frequency expansion criterion (see next 'section) yields identically the low-frequency solutions Eqs. (17) and (19).…”

“…(23) is a more convenient form than Eq. (19), particularly for the power-law bodies. For details of this distribution-function expansion method, refer to Ref.…”

“…Several recent works 19 -20 on slender-wing treatments in sonic flow also should be mentioned here, since they also are based on the same extensive concept of parabolic method. Employing the integral method for linearized sonic flow previously developed by Liu HM6 and Liu et al, 5 Kimble et al, 19 and Ruo 20 have derived the slender-wing potential for stability calculation in the low-frequency range.…”

“…Employing the integral method for linearized sonic flow previously developed by Liu HM6 and Liu et al, 5 Kimble et al, 19 and Ruo 20 have derived the slender-wing potential for stability calculation in the low-frequency range. In the present paper, we show that the sonic solution by Ruo can be obtained, directly in the physical space, from combined procedures based on the works of Platzer, 26 Liu,12 and Zierep.…”