Wind Tunnel Testing on Start/Unstart Characteristics of Finite Supersonic Biplane Wing

Figure 3

Start/unstart characteristics of supersonic inlet diffuser. The thick solid line shows the Kantrowitz-Donaldson limit, and the broken line shows the isentropic contraction limit. The ratio of the throat-to-inlet-area of the Busemann biplane is 𝐴_𝑡/𝐴_𝑖=0.8 as indicated by the dotted line. The diamond symbol denotes the design point of the biplane at 𝑀_∞=1.7 in this study. The thin solid line shows other design points of the Busemann biplane with 𝑡/𝑐=0.05.