The many informations about the performances of the gun tunnel had been obtained theoretically and experimentally by the pilot gun tunnel which was constructed at Kyoto University in 1962. By these data, a large-sized hypersonic gun tunnel at Uji Campus in Kyoto University was new-built on March in 1967.
In this paper, its mechanisms and performances are discussed. The peculiar mechanisms are adopted as follows; i) Double diaphragm type, ii) Automatic operating system, iii) Central control system, etc.
The experimental results of the performances give the followings; i) Mach numbers of 9.515.6, ii) Duration time of 0.070.86 sec, iii) Stagnation temperature of 1, 0001, 300°K and so on.
